Conference PaperPDF Available

WILD EDIBLE MUSHROOMS USED BY SOME ETHNIC TRIBES OF WESTERN ASSAM

Authors:
  • The Energy and Resources Institute, NE Regional Centre

Abstract

In North-eastern region of India mushrooms are highly coveted item of food. But the knowledge of edible mushroom in Assam is confined only to the ethnic tribes of the state. One also comes across occasional reports about deaths resulting from consumption of poisonous mushroom. Thousands of mushroom species are increasingly studied and collected by amateur mushroom hunters. About 100 of these can cause serious illness, and prove fatal. Mushroom production represents one of the most commercially important step towards diversification of agriculture based microbial technology for large-scale recycling of agro-wastes in an agricultural country like India. It relieves the pressure on arable land, because its cultivation is indoors, and is also more suited to the women folk. Mushrooms are regarded as highly nutritious food containing large amount of proteins. Mushrooms are also important foreign exchange earners. Mushrooms have been recommended as food item contributing significantly to the protein nutrition of the developing countries like India(FAO), which depend mainly on the cereal diets. Low cost labour, varied agro-climatic conditions and abundant cheap raw materials for production of various mushrooms may make India a future mushroom exporter both in form of quality and quantity of diverse food. Among the ethnic tribes, Garos uses at least seven species of mushrooms followed by Adivashis, Bodos and Rajbangshis of Western Assam. But the potentialities of such species are yet to be studied in detail. In this study, an attempt has been made to include few edible mushroom species that are frequently eaten by ethnic tribes of Western Assam.
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ISSN: 0973 - 7049
: Special issue, Vol. 3;
Paper presented in International Conference on
Environment, Energy and Development (from
Stockholm to Copenhagen and beyond)
December 10 - 12, 2010, Sambalpur University
WILD EDIBLE MUSHROOMS USED BY SOME ETHNIC TRIBES
OF WESTERN ASSAM
T. C. Sarma et al.
Edible mushroom
Ethnic tribes
Western Assam
613-625; 2010
614
T. C. SARMA*, I. SARMA1 AND B. N. PATIRI2
1Department of Botany, Gauhati University, Guwahati, Assam
2DFO-Chirang, Kajalgaon, Assam
E- mail: tarunchandrasarma@yahoo.com
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ave Natureto
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urvive
In North-eastern region of India mushrooms are highly coveted item of food. But the knowledge
of edible mushroom in Assam is confined only to the ethnic tribes of the state. One also comes
across occasional reports about deaths resulting from consumption of poisonous mushroom.
Thousands of mushroom species are increasingly studied and collected by amateur mushroom
hunters. About 100 of these can cause serious illness, and prove fatal. Mushroom production
represents one of the most commercially important step towards diversification of agriculture
based microbial technology for large-scale recycling of agro-wastes in an agricultural country like
India. It relieves the pressure on arable land, because its cultivation is indoors, and is also more
suited to the women folk. Mushrooms are regarded as highly nutritious food containing large
amount of proteins. Mushrooms are also important foreign exchange earners. Mushrooms have
been recommended as food item contributing significantly to the protein nutrition of the develop-
ing countries like India(FAO), which depend mainly on the cereal diets. Low cost labour, varied
agro-climatic conditions and abundant cheap raw materials for production of various mushrooms
may make India a future mushroom exporter both in form of quality and quantity of diverse food.
Among the ethnic tribes, Garos uses at least seven species of mushrooms followed by Adivashis,
Bodos and Rajbangshis of Western Assam. But the potentialities of such species are yet to be
studied in detail. In this study, an attempt has been made to include few edible mushroom species
that are frequently eaten by ethnic tribes of Western Assam.
ABSTRACT
*Corresponding author
www.thebioscan.in
615
INTRODUCTION
Fungi have been occupying a prominent position in the biological world because of their variety, economic
and environmental importance. The study of fungal biodiversity has been carried out world over (Crous,
2006) and 1.5 million species has been reported so far (Hawksworth, 2004). About 50% of them have been
characterized (Monoharachary et al., 2005). The total numbers of fungal species in India is 27,000 (Cowan,
2001; Chang and Miles, 2004). The fungal biotechnology is an emerging area and they are intimately related
with our life (Monoharachary et al., 2005). Macrofungi are unique from fungal diversity point of view.
Macrofungi grow prolifically and are found in many parts of the world (Smith, 1963). It is usual for a
particular fungus to produce a visible fruiting body only under a precise combination of conditions, including
geographic location, elevation, temperature, humidity, light and surrounding flora. Studies on macrofungi
and their various aspects have been carried out in different parts of the globe (Laferriare and Gilbertson,
1990; Peck, 1873; Stojchev, 1995). Studies on Macrofungi have been an area of importance for the scientists
in particular and the people in general, because of their role in human welfare, in food industry, in medicines,
and biodegradation (Ozturk et al., 2003). However, the study of macrofungi, having edibility and medicinal
properties are yet to be properly dealt with (Jonathan and Fasidi, 2003).
Traditional mycological knowledge of most Indian ethnic groups has proven to be extensive and profound,
consuming nearly 283 species of wild mushrooms out of 2000 species recorded world over (Purkayastha and
Chandra, 1985). Despite having all the favourable conditions, mushroom farming is not spreading fast in
India. Presently, about 70,000 ton of fresh mushroom is being produced in India as against over 5 million ton
world production of mushroom annually.
Wild mushrooms are a valuable non-timber forest resource used by mycophilic societies and their use has
been documented in many countries around the world (Prance, 1984; Gonzalez-Elizondo, 1991; Harkonen et
al., 1993b; Jones and Whalley, 1994; Chang and Lee, 2004, Roberto G.O et al., 2005). They are sold in
traditional markets (Roberto G.O et al., 2005; Moreno-Black et al., 1996) or commercially exploited as
food (Redhead, 1997; Pilz et al., 1999) or medicines (Oso, 1977; Rai et al., 1993; Vaidya and Rabba, 1993;
Chamberlain, 1996). Ethnomycological aspects were also dealt with by few workers in different parts of
India and world over (Harsh et al. 1993; Bulakh, 2001; Didukh, 2001; Adhikary et al., 2005). Some of the
wild edible mushrooms has also been reported from Manipur and Arunachal Pradesh of North East India
(Sing and Sing, 1993; Sing et al., 2002). Whereas, from Assam Baruah et al., (1971) reported few
Basidiomycetous fungus of Sibsagar District.
Study Area
The North east India encompasses diverse hills and vales. These areas are rather treasure of diverse flora
and fauna. The forest of western Assam residing in between 26° 102 123 N-26° 172 NL and 90° 372 123
- 90°622 EL (2729 km2) possesses the reserve forests viz., Kachugaon, Haltugaon, Parbatjhora and Chirang
of undivided Goalpara district. The forest composition is like – Eastern Himalayan upper Bhabar Sal forest,
Eastern Himalayan Lower Bhabar Sal forest, Eastern Terrai Sal forest, Eastern heavy alluvian Plain Sal
forest, Eastern Hill Sal forest, Northern Secondary moist deciduous forest, Evergreen forest, Lower alluvial
Savanah,Woodland, Eastern west alluvial grass land, Riperian Fringe Forest, Khoir Sissoo forest, Secondary
Bamboo brakes (Source: Profile on Forest and Wild Life of Bodoland Territorial, Forest Department).The
average maximum temperature 37°C and minimum 8°C, Rainfall 176cm-300cm. All these forest areas with
different forest types are unique from biodiversity point of view.
Some of the ethnic tribes viz. Adivashis, Bodos and Rajbangshis are residing by the side of all these forests
are consuming some of the mushrooms available in the forests. The relationship of ethnic groups with
mushrooms is based on one hand on the castes that are aware of the religious sacredness of the Hinduism and
on the other hand on traditional knowledge. The origin and distribution of some ethnic castes are found to
localize in particular zone or area. The ethnic groups are the traditional collectors. The different kinds of
edible and non-poisonous mushrooms that are consumed in the region grow wild. Their knowledge on mushrooms
and fungi are quite different.
WILD EDIBLE MUSHROOMS OF WESTERN ASSAM
616
In this paper, our aim was to benchmark diversity of macrofungi, collect, preserve, and evaluate their usage
in food and medicines by some ethnic tribes of Western Assam.
MATERIALS AND METHODS
Survey collection and identification
Regular survey and collection of macrofungi were carried out in Kachugaon, Haltugaon, Parbatjhora, and
Chirang reserve forest of erstwhile Goalpara district which is located in the western Assam. Along with the
forests different markets were also surveyed during April, 2008 to October, 2009. Six different selected
sites were visited; viz. Runikhata bengtol, Abhoypuri (hilly area), Kachugaon, Panbari, Goma in Parbatjhora
forest and Ultapani. The fleshy fungi were collected from different habitats. The different forest mentioned
above are Sal-forest, Evergreen forest and deciduous forests i.e. mixed type of forests are impregnated with
-decaying wood and rotting plant parts, termites nests, elephants and cow dungs, leaf litters etc. The
specimens were found attached to various substrata. The collection of specimens were also done from
different markets of the localities in order to gather information in regards to their place of occurrence.
Collected samples were wrapped in cellophane paper and brought to the laboratory for their identification.
The macrofungi with leathery texture were preserved in 4% formaldehyde solution where as the samples
with soft texture were preserved in 2% formaldehyde solution and kept as herbarium specimens. Dried
specimens were also preserved for identification, characterization and documentation. The habitat, colour,
shape and size, growth, texture, odour and adaptation to the environment considered prior to the preservation
of the collected macro fungi. Identification of the specimens were carried out by standard microscopic
methods (Roy and De, 1996), and also considering various morphological and anatomical features into
account (Overholts, 1953; Bondarstev, 1953; Bakshi, 1971; Zoberi, 1972; Nilson and Persoon, 1978; Higgins,
1972; Ryvarden and Johansen,1980; Dickinson and Lucus, 1982; ; Roy and De, 1996; Garnweidner, 1996;
Sharma, 2000). Environments were considered prior to the preservation of the collected macro fungi.
Frequency study
Number of sites in which the species is present
Frequency of fungal species(%)= X 100
Total number of sites
RESULTS
Species diversity of macrofungi is related to the particular habitats and ecosystem. We found that
environmental factors like light, temperature and RH greatly influenced the growth and development of
macrofungi. During this period of one and a half year the outcome of the regular survey, 26 different species
of macrofungi belonging to 14 genera and 13 families were identified (Table -1). Excepting Morchella
esculanta (Ascomycetes) rest of the species belongs to Basidiomycetes. Out of the 26 species identified 3
belongs to family Auriculariaceae, 3 belongs to Agaricaceae, 2 belongs to Boletaceae, 2 belongs to
Lycoperdaceae, 2 belongs to Cantherallaceae, 1 belongs to Ganodermataceae, 4 belongs to Marasmiaceae,
2 belongs to Polyporaceae, 1 belongs to Schizophyllaceae, 5 belongs to Tricholomataceae (all Basidiomycetes)
where as, 1 belongs to Helvellaceae (i.e., Ascomycetes). This study revealed that in this area of the state
majority of macrofungi Ganoderma lucidum(100%) was followed by Cantharellus tubaeformis (83.33%)and
Agaricus bisporus(83.33%), Schizophyllum commune, Auricularia delicata, Boletus luteus, Cantherallus
cibarius, Lycoperdon cladopus, Termitomyces clypeatus(66.66%), Auricularia auricula, Lentinus edodes,
Laetiporus sulphureus, Morchella esculanta, Termitomyces mammiformies, Auricularia polytricha, Agaricus
sylvetica, Calvatia gigantia, Lentinus sajor-cajo, Lentinus ostreatus, Tricholoma terreum(33.33%), Agaricus
campestries, Boletus edulis, Lenzites betulina, Lycoperdon pyriforme, Termitomyces robustus, Termitomyces
microcarpus (16.66%). Among these 26 species studied Ganoderma lucidum (Ganodermataceae) was found
to be highest (Table 1, Fig. 1).
Edible species
T. C. SARMA et al.,
617
Name of the species Class Family Host / Substratum Use Frequency of occurrence (%)
Auricularia auricula(Hook) Basidiomycetes Auriculariaceae Dead bamboo culm,Under Edible, medicinal 50
wood. Live Psidium guava
A.delicata(Fr.) Heim. Basidiomycetes Auriculariaceae Dead log of Semecarpus sp. Edible 66.66
A.polytricha(Mont.)Sacc. Basidiomycetes Auriculariaceae Dead bamboo culms. Edible 33.33
Agaricus bisporus Quel. Basidiomycetes Agaricaceae The meadows, Humus, Edible 83.33
Dead wood logs.
A.campestries(L) Fr. Basidiomycetes Agaricaceae –do- Edible 16.66
A. sylvetica (Schaeff.) Basidiomycetes Agaricaceae -do- Edible 33.33
Boletus edulis(Fries) Basidiomycetes Boletaceae Dead wood logs, field covered Edible 16.66
by dead grasses
B.luteus Linn. Basidiomycetes Boletaceae elephant dung infested soil. Edible 66.66
Calvatia gigantia Basidiomycetes Lycoperdaceae Dead wood logs, On the Edible 33.33
(Batsch ex. Pers.) ground Llyod Field
Cantherallus cibarius (L) Fr. Basidiomycetes Cantherallaceae On live coconut, Dead Edible, rich in vitamin 66.66
wood logs C, insecticidal
C.tubiformis( Fr.) Basidiomycetes Cantherallaceae dead wood logs, grows amongst. Edible, rich in vitamin 83.33
Mosses in the woods C, insecticidal
Ganoderma lucidum (Leys ex Fr.) Basidiomycetes Ganodermataceae In living tree. Fallen Wood Medicinal 100
Karsten logs, Dead wood logs.
Lentinus edodes (Berk.)Pegler. Basidiomycetes Marasmiaceae Dead wood logs of Edible 50
Cassia fistula.
L.cladopus Lev. Basidiomycetes Marasmiaceae dead wood logs. Edible 66.66
Lentinus sajor-cajo (Fr.) Fr. Basidiomycetes Marasmiaceae dead wood logs Edible 33.33
Lentinus. ostreatus(Jacquin ex Fr). Basidiomycetes Marasmiaceae -Do- Edible 33.33
Kummer.
Laetiporus sulphureus(Fr.) Murr. Basidiomycetes Polyporaceae Psidium guava, Edible 50
Dead wood logs
Lenzites betulina(L.)Fries Basidiomycetes Polyporaceae Dead wood logs Non-edible 16.66
Lycoperdon pyriforme (Schaeff.) Basidiomycetes Lycoperdaceae Meadows,humus. Edible 16.66
Morchella esculanta (L.) Pers. Ascomycetes Helvellaceae Ground,Meadows. Edible 50
Schizophyllum commune (Fr.) Basidiomycetes Schizophyllaceae Dead bamboo culms, Edible 83.33
Dead wood logs.
Termitomyces clypeatus (Heim.) Basidiomycetes Tricholomataceae Termites nests Edible 66.66
T.mammiformies (Heim.) Basidiomycetes Tricholomataceae Termites hive Edible 50
T.robustus (Beeli)Heim. Basidiomycetes Tricholomataceae Soil associated with Edible 16.66
Termites hive.
T.microcarpus (Berk. Ex.Br.) Basidiomycetes Tricholomataceae fruit bodies grow in Edible 16.66
Heim. Group near termites Nests.
Tricholoma terreum(Scaeff..Fr.) Basidiomycetes Tricholomataceae On forest soil. Edible 33.33
kummer
Most of the macro fungi studied in these area are edible and medicinal, utilized by the different ethnic tribes of western Assam.
Table1: Frequency of occurrence of Macro fungi studied in western Assam.
WILD EDIBLE MUSHROOMS OF WESTERN ASSAM
618
Figure 1: Frequency of occurrence of different macro fungi of western Assam
Aa-Auricularia auricula (Hook) Underwood
Ad- Auricularia delicata(Fr.) Heim.
Ap- A.polytricha(Mont.)Sacc
Ab- Agaricus bisporus Quel
Ac- A.campestries(L) Fr.
As- A. sylvetica (Schaeff.)
Be- Boletus edulis(Fries)
Bl- B.luteus Linn.
Cg- Calvatia gigantia(Batsch ex. Pers.)
Cc- Cantherallus cibarius (L) Fr.
Ct- C.tubaeformis( Fr.)
Gl-Ganoderma lucidum (Leys ex Fr) Karsten
Le- Lentinus edodes (Berk.)Pegler.
Lc- L.cladopus Lev.
Ls-Lentinus sajor-cajo (Fr.) Fr.
Ls-Laetiporus sulphureus (Bull.) Murril
Lo- Lentinus.ostreatus(Jacquin ex Fr). Kummer.
Lb- Lenzites betulina(L.)Fries
Lp- Lycoperdon pyriforme (Schaeff.)
M- Morchella esculanta (L.) Pers.
Sc- Schizophyllum commune (Fr.)
Tc- Termitomyces clypeatus (Heim.)
Tm- T.mammiformies
Tr- T.robustus (Beeli)Heim.
Tt- Tricholoma terreum(Scaeff..Fr.)Kummer
0
10
20
30
40
50
60
70
80
90
100
Aa
Ad
Ap
Ab
Ac
As
Be
Bl
Cg
Cc
Ct
Gl
Le
Lc
Ls
Lo
Ls
Lb
Lp
Me
Sc
Tc
Tm
Tr
Tm
Tt
Plate 3: Laetiporus sulphureus Murr Plate 4: Boletus edulis
Plate 2: Cantherallus cibarius (ventral view)
Plate 1: Cantherallus cibrius
T. C. SARMA et al.,
619
Plate 8: Ganoderma
Plate 7: Auricularia
Plate 5: Lentinus Plate 6: Agaricus
Plate9:Termitomyces Plate10:Termitomyces
The consumption of different mushrooms varies from tribe to tribes. Edibility of mushroom is dependent
upon the palatability as well as its availability in a particular area. The favourable season for mushrooms
collection is rainy season. The picking of mushrooms in these areas was mainly dominated by the males;
however, it is followed by women and children. Of course, the Bodo women are fond of collecting the
mushrooms. It is also pertinent that utilization of mushroom were being transmitted amongst the ethnic
WILD EDIBLE MUSHROOMS OF WESTERN ASSAM
620
people orally from one generation to the next. The Garos and the Bodos from western Assam had some
knowledge to identify the edible and poisonous forms of mushrooms.
All together 25 edible species from the study areas were recorded (Table 1). The informants were also
asked to categories the mushrooms according to their palatability values (Table 1).
Auricularia auricula(Hook) Underwood.
Fruit bodies jelly like, ear shaped, solitary, gregarious occasionally, reddish brown, sessile, 2.4-10 cm. in
breadth, 0.7-1.5 mm.in thickness, fruit body anchoring to the Psidium guava (L) plant and dead bamboo
culms. L.S. of the fruit body –divided into 6 zones;viz. Zona pilosa-5μm in diameter, hyaline, Zona compacta-
62-72 μm wide; Zona sub compacta,superior, 112-132 wide; hypha 2μm diameter, coarsely granular; Zona
intermedia 280-310 μmbreadth, hyphae 1.5-2μ m diameter, Zona sub compacta inferior-95-110μm, dense
compact layer. Basidia elongated cylindric with three transverse septa. Spores white, sausage-shaped, 16–
18×6–8μm.
Auricularia delicata (Fr.) Heim.
Fruit body 2-9.5 cm. width, 0.4x1.5 mm; thick, sessile, solitary, on dead wood logs; ear shaped, brownish
black, hard, rubbery- gelatinous when fresh and brittle when dry.
Hymenium light reddish brown, basidium is virgate, Spore colourless, transparent, smooth, cylindrical,
10-13ìm× 5-6ìm. Edible and also used to stop bleeding.
Auricularia polytricha(Mont.)Sacc.
Fruiting bodyrubbery, gelatinous when young and on drying become brittle, cartilaginous sheet like; Pileus
4- 7.9.cm. in breadth 0.5-1.6mm. thick; in l. s. of the pileus showing zonapilosa, zona compacta, zona sub
compacta, zonalaxa superior, medulla, zonalax inferior, zona subcompacta inferior; hymenium 80-90μm.
basidia cylindrical, triseptate, 50-60x4-5μm; basidiospores curved, cylindrical, 12.3-15x4.5-6μm. Edible.
Agaricus bisporus Quell
Cap-6.33-10.16cm.brown with dirty white tint; gills crowded, free, flesh-coloured or chocolate brown,basidia
normal,mostly 2-4 spored,basidiospores 4.2-6.2x3.2-4.4μm ,cystidia absent, trama regular in hymenophore,
stipe-short, stocky,with wooly ring;grows in humus rich soil .Excellent edible mushroom.
Agaricus campestris(L) Fries
Sporephore stipitate, white,growing solitary in soil,Cap 2.95-6.9cm. in diameter,some times arranged in
fairy rings; Gills-free,crowded,white in young stage; stipe 3.2-6.2cm.,long,0.6-1.45cm. thick,annulus
present,volva absent, Basidia 2.2-5.2-7.8μm.Cystidia absent.Edible .
Agaricus silvetica(Schaeff.)
Sporophores grow on soil, stipitate, cap 2.9-8.75 cm.in diameter,campanulate at youn stage,subumbonate at
maturity; white,greysh brown at maturity; Gills disnict,crowded;stipe central, slightly narrow towards the
apex, basidia 10.0-16.5 x2.9-8.0μm;Cheilocystidia clavate,; basidiospores 4.2-5.2 x2.9-3.5μm; spore print
brown. Edible.
Boletus edulis(Fries)
Fruit body whitish, greenish at young stage, yellow at maturity, stipe stout stem-white or yellowish 2.5 cm
to 10 cm; partially covered with raised network, gills- narrow, hymenium- adnate, spore print brown, grows
on broad leaved woods, mycorhizal.
Boletus luteus Linn
Cap-5.0-8 cm., thick shining layer of slime cover the cap, often rain washes this layer, stipe with fluffy
spots above the ring, gills narrow ,spore print yellowish white, grows under some deciduous tree. Young
ones are good to eat.
Cantharellus tubaeformis Fr.
Cap 2.9-10.5 cm, more or less funnel shaped; hollo towards the base of the stem, wavy or crisped margin;
T. C. SARMA et al.,
621
gills thick, forked decurrent. Spore print white, stem-compressed, pitted; flesh tough, edible, tasty. It is
available in great numbers in late winter. Very tasty but with no fruity smell.
Cantharellus tubaeformis is an excellent food, either fried or in soups.
Cibarius(L)Fr
Fruit body yellowish with orange tints, fruity smell like those of apricots, mildly peppery taste, cap 2.8-
10.5cm, cap convex infundibuliform, hymenium attachment irregular, stipe 3.0-8.0 cm, stipe bare, spore
ellipsoidal(3.4-9.1 cmx 4.0-6.2 μm; odour mild, basidia 3.5-14.2 μm, clavate, 4-sterignata, 3.8-5.5 μm),
spore print yellow, Ectomycorhizal.
It has a fruity smell, reminiscent of apricots and a mildly peppery taste and is considered an excellent
edible mushroom
Marasmius oreades (Bolton) Fr
The fruiting bodies form fairy rings,Cap-1.27-5.08cm;campanulate,umbonate,margin;stem cartilaginous,7cm.
long and 5mm.in diametergills attached to the stem or free from it, thick, spore print white, basidio spores
elliptical, -7-10x4-8μm,cystidia absent.
Cap 1 cm to 10 cm, Flat- umbonate, margin-striate, Gills-thick, stem-cartilaginous; Flesh tough. Grows
amongst the grasses, edible.
Termitomyces clypeatus Heim
In termites hive of shaded forest. Cap 5.5 cm-7.0 cm, grayish brown, silky; margins reflexed, gills-free,
white, crowded, stipe long-7.5 cm, white, solid, equal but sometimes bulbous besides soil, spore print
pinkish, basidia- clavate, basidiospores-4 hyaline, smooth, thin walled. 4-8x 3-4.2 μm.
Termitomyces mammiformis (Heim)
Cap-6.5 cm.in diameter,umbo prominent and inflexed margin;gills free,free white,stipe long-5.5 cm.width-
1cm.;solid and white; the lower tapering end of the stipe is deep Seated in the termites hive.presence of
persistent annulus is a diagnostic character of this species.Basidia clavate; basidiospores smooth,ellipsoidal,
hyaline;6.2 -3.2 μm ; spore print yellowish grey.
Termitomyces robusta(Beeli) Heim.
Cap dark- brown 7-15 cm.in diameter; with inflexed margin; free gills, white in colour; stipe long-4.8-6.1
μm; it has continuation in the termites nest infested soil; the total length of the stipe along with the buried
portion is 25 cm.basidia clavate; basidiospores ellipsoidal. Basidiospores large, 5.6 x 4.58 μm.
Termitomyces microcarpus (Berk and Br.) Heim
Spread of this fungus is quite striking; they are abundantly present in the termites disused nests. Cap- 1.9cm
in diameter; umbonate, yellowish grey in the margin; olive in the centre; Stipe long-5.2 cm., more or less
straight, white, a part of it is inside the soil,nearly3.2 cm.;basidia clavate, basidiospores 4 in number,
smooth, hyaline, ellipsoidal 6.5- 7 x 3-4 μm;spore print white or grey.
Tricholoma terreum(Scaeff. Fr.) Kummer
Fruit body solitary, pileus 2.5-5.6 cm. in diameter, bell-shaped, slightly umbonate, grayish, marginincurved,
fleshy; gills greyishwhite, broad, thick; basidiospores ellipsoidal, 6.4-7.3x3.2-4.4μm. Edible ; With a mild
taste, the species is regarded as a good edible.
Calvatia gigantia(Batsch ex.Pers.) Llyod.
Diameter of the sporophore 15cm.-20cm. exoperidium leathery, smooth, white for along period; gradually
turning yellowish brown; spongy inside; at the top portion the sporophore splits gleba greenish yellow;
spores globose, 3.3-5.2μm in diameter; spores ornamented sharp spines. Specimens at young stage are
consumed.
Ganoderma lucidum(Leys ex Fr.)Karsten
WILD EDIBLE MUSHROOMS OF WESTERN ASSAM
622
Pileus 6-22cm wide, mostly kidney shaped or circular, flate, concentrically grooved, with shining blood red
varnished crust, some times almost black; but some times colourless; stipitate or sessile; 15.2 cm. long
stipe with irregular pseudosclerotia buried deep in the substratum(in soil or dead wood logs or living
deciduous trees; with poroid hymenium; pore minute,165μm wide, spores –brown,ovate,warty, rough,11-
13.5 x 6-7.5μm.
Laetiporus sulphureus(Fr.)Murr
Bracket like fruiting body growing on Psidium guava plant and in dead wood logs sessilepileus dull yellow
to when young, pale white in maturity; hymenial portion yellowish, pore tubes present 0.3-0.4cm.long, more
or less elliptical; Basidia sub-clavate, basidiospores 6.2-7.2x5.0-5.3μm.
Lentinus edodes(Berk) Pelger
Fruiting body solitary,centrally stipitate, substratum dead wood logs of cassia fistula, Pileus 3.3-14 cm. in
diameter, convex, subumbonate to depress, withsmooth surface, in young stage the-margin incurved; at
maturity –decurved; gills whitish at first, later reddish brown tint; spore print white; stipe 3.3 -7.3mmwide;
central to eccentric; subcylindric, poorely developed veils, volva abscent; Basidia clavate,16.2-24.5 x4.8-
5.9μm;basidiospores 7.25-8.5x5.2-6.7more or less ellipsoid, hyaline, spore wall thin.
Lentinus cladopus Lev.
Fruiting body found in decaying stumps and the roots of trees,cap-2.2-7.6 cm.in diameter, central portion is
depressed, funnel shaped, large scales present at the centre and the smaller towards the margin; creamish
white at young stage gradually yellowish at maturity; gills crowded, decurrent; spore print white,; stipe2.2-
10.2 mm long; annulus and volva absent; basidia clavate, 4-spored.
Lentinus sajor cajo(Fr.)Fr.
The fruiting body colour pale white, brown, extremely tough, stalk central in position,4-8 cm long;0.5-1.7
cm. in diameter; eccentric, solid and cylindric, annulus present ,often lost at maturity volva absent; basidia
clavate with 4-basidiospores;basidiospores-6.4-8.0x2.5-4.5μm;pleurocystidia absent; cylindrical, smooth,
hyaline, thin walled, well developed, solitary, stipitate, growing in dead wood logs which are mostly
composed; pileus 3.5-15.0cm., margin of cap rolled in drying condition.
Lenzites betulina(L)Fries.
Fruiting body-2-10cm.width,0.5-2.0cm.thick;sessile,fan shaped, concentrically zoned, pale cream to greyish
brown; gills- white, well spaced radiating from point of attachment, tough; Basidiospores-4-5.5x1.5-2.1μm,
smooth, cylindrical or bean shaped, spore print white; cystidia absent, non edible.
Lycoperdon pyriforme (schaeff.)
Fruiting body-1-4.5cm across, solitary, globose or pyriform, mealy granules cover the exoperidium,
endoperidium greyish brown, smooth, whitish to greyish brown; angiocarpic, gleba white, soft, fleshy at
young stage, brown cottony at later stage; spores olive brown, spores 2.5-4.5μm. Edible when young.
Morchella esculenta (L) Pers.
Ellipsoidal head of the fruit body; apothecium forms depressions that are fertile with the sterile ridges in
between,5.08-7.0 cm.tall colour pale brown to dark brown, stem as long as the cap, hollow ;Grows in woods
and amongst the grasses. Edible.
Schizophyllum commune (Fries)
Fruiting bodies leathery, cap grayish, white, fan shaped, ranging from 1 cm. -4 cm. broad, lobed, deeply
cleft, attached to the substratum laterally; gills grayish–violet radiating from the point of attachment,
basidium normal, spore print white, spores 5.5-6.5x2.5-3.5μm, cystidia absent. Edible.
DISCUSSION
In Western Assam, the result of the survey concluded that Auricularia auricula, A.delicata, A. polytricha,
T. C. SARMA et al.,
623
Agaricus bisporus, A.campestries, A. sylvetica, Boletus edulis, B.luteus,Calvatia gigantia, Cantherallus
cibarius, C.tubaeformis, Ganoderma lucidum, Lentinus edodes, L.cladopus, L.ostreatus, Laetiporus sulphureus,
Lycoperdon pyriforme, Morchella esculanta, Schizophyllum commune, Termitomyces clypeatus, T.
mammiformies, T. robustus, T. microcarpus, Tricholoma terreum were good for edible purpose. Whereas
Cantharellus tubaeformis and C. cibarius (Table 1, Plate-1) were considered to be the best amongst them.
Similarly, Tricholoma terreum, Marasmius oreades, Laetiporus sulphureus, Lentinus edodes, Lentinus cladopus,
Lentinus sajor cajo, Morchella esculenta, Schizophyllum commune were good for edible purpose while
Calvatia gigantia and Lycoperdon pyriforme are edible at their young stage. Similarly, Auricularia auricula,
Auricularia delicata, Auricularia polytricha were considered as edible but not very much tasty. On the other
hand, the Garo people used Auricularia auricula (Table: 1, Plate-7) in some sorts of ailments like rheumatic
pain and some injuries.Though Lenzites betulina is very much available but not consumed by these tribes.
Garos and Bodos dwelling near by hilly region of the forest area also do not prefer Marasmius oreades. It
has been observed that people living in mountainous areas preferred wood-inhabiting fungi while those living
in plains preferred the species growing on soil (viz. Termitomyces clypeatus, T.mammiformies, T.robustus,
T.microcarpus, Lentinus edodes, L.cladopus, L.ostreatus). Cantharellus cibarius was found to be most delicious
and highly preferred species in all the sites of Western Assam. The species of Cantharellus are rich in
vitamin c. Though it has insecticidal properties but the local people are not aware of this fact. However,
Adivashi people are very much fond of mushrooms. They prefer some of the wood decaying mushrooms viz.
Laetiporus sulphureus, Lentinus sajor cajo, Calvatia gigantia, Cantherallus cibarius, C.tubaeformis,
Schizophyllum commune.
The Rajbanshi people are also consuming many of these macrofungi, still they are less habituated in taking
these mushrooms in comparison to the Garos and Bodos as they are more developed than those of the other
tribes living in this area. There are some types of mushrooms like Ganoderma lucidum which have medicinal
properties (Chang and Bushwell, 1999). But the medicinal use of mushrooms among the tribes of Western
Assam was scarce.
Identification of non poisonous mushrooms is a major point in mushroom study. There is very little report
available on mushroom poisoning or about deaths resulting from consumption of poisonous mushrooms from
Western Assam. Both the traditional and modern knowledge of mushrooms does not define any type of hard
and fast rule for the identification of edible and poisonous forms of mushrooms (Adhikari, 2000, 2004 and
2005). But the inhabitants of Western Assam can distinguish the poisonous and nonpoisonous type of mushrooms.
CONCLUSION
The identification and use of wild edible mushrooms play a vital role in enrichment of the socio- economic
life of the tribal people. Besides their consumption, the use of mushrooms in folk medicines also paves the
way for the upbringing new industries.
ACKNOWLEDGEMENT
The authors are very much grateful to Prof .S. P. Bora, the Head of the Dept. of Botany, Gauhati University,
Guwahati for providing laboratory facilities. We would like to express sincere gratitude to Prof. S. K.
Borthakur for his inspiration to undertake this piece of work.
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... This is likely the reason behind the variability we observed in the spore characteristics between studies concerning the same species. For example, Mitchell and Walter [14] recorded the basidiospore size of A. bisporus as 6.8-8.5 × 5.6-6.6 µm, while Sarma et al. [12] recorded a smaller basidiospore size (4.2-6.2 × 3.2-4.4 µm). ...
... µm). Pegler [17] recorded the basidiospore size of L. edodes as 5-7 × 3-3.7 µm, while Sarma et al. [12] recorded a bigger basidiospore size (7.25-8.5 × 5.2-6.7 µm). Lechner et al. [23] recorded the basidiospore size of P. ostreatus as 8-13 × 3.1-3.6 ...
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... Morchella spp. are recorded and reported to harvested from northwest Yunnan, southern Xizang, Assam, Bhutan, Darjeeling, Western Nepal, Northwest India, and Northeast (Choudhary et al. 2015;Cunningham 2012;Devkota 2009;Du et al. 2012;Hamayun et al. 2006a;Pyakurel et al. 2018;Rana et al. 2019;Saqib and Sultan 2005;Sarma et al. 2010;Singh et al. 2019;Vidyarthi et al. 2013). However, its status and collection from Myanmar and eastern Nepal are uncertain. ...
... Morchella spp. are recorded and reported to harvested from northwest Yunnan, southern Xizang, Assam, Bhutan, Darjeeling, Western Nepal, Northwest India, and Northeast (Choudhary et al. 2015;Cunningham 2012;Devkota 2009;Du et al. 2012;Hamayun et al. 2006a;Pyakurel et al. 2018;Rana et al. 2019;Saqib and Sultan 2005;Sarma et al. 2010;Singh et al. 2019;Vidyarthi et al. 2013). However, its status and collection from Myanmar and eastern Nepal are uncertain. ...
... Wild mushroom species are vital components of the livelihoods of rural people in different parts of the world [12,13]. Many of these mushrooms are collected because they are valuable non-timber forest products (NTFPs) [14,15], enabling people to overcome vulnerability to poverty and sustain their livelihoods through a reliable source of income [12]. ...
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Ethnomycological information was gathered by conducting semi-structured interviews with members of the Amhara, Agew, and Sidama ethnic groups in Ethiopia. A total of 300 individuals were involved in this study. Forest excursions were also undertaken to investigate the habitat and to identify useful wild mushroom species present in the study areas. A total of 24 useful wild mushroom species were identified. Among the three ethnic groups, the Sidama have the most extensive ethnomycological knowledge and over seven vernacular names for useful fungal species were recorded for this group. Collecting mushrooms is common practice among the Sidama and usually carried out by women and children during the main rainy season from June to September. Useful mushrooms are collected in natural forests, plantation forests, grazing areas, home gardens, and swampy areas. In terms of medicinal uses, Lycoperdon perlatum Pers. and Calvatia rubroflava (Cragin) Lloyd. are well-known treatments for wounds and skin disease. Harvest storage of wild mushroom species is unknown. Respondents in the Amhara and Agew ethnic groups were similar in terms of their use and knowledge of mushrooms. Both ethnic groups reported that although wild mushroom species were consumed by their grandparents, they do not eat mushrooms themselves, which could eventually represent a loss of mycological knowledge in these two ethnic groups. Such inconsistency between ethnic groups in terms of their knowledge may also be linked to the social valuation of mushroom resources, which could easily be mitigated by raising awareness. Thus, the baseline information obtained in this study could be useful for further investigations and documentation, and to promote ethnomycological benefits to different ethnic groups in countries with similar settings.
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Urgent and innovative strategies for removal of persistent organic micropollutants (OMPs) in soil, groundwater, and surface water are the need of the hour. OMPs detected in contaminated soils and effluents from wastewater treatment plants (WWTPs) are categorized as environmentally persistent pharmaceutical pollutants (EPPPs), and endocrine disrupting chemicals (EDCs), their admixture could cause serious ecological issues to the non-target species. As complete eradication of OMPs is not possible with the extant conventional WWTPs technology, the inordinate and reckless application of OMPs negatively impacts environmental regenerative and resilience capacity. Therefore, the cardinal focus of this review is the bioremediation of persistent OMPs through efficient application of an agro-waste, i.e. spent mushroom waste (SMW). This innovative, green, long-term strategy embedded in the circular economy, based on state of the art information is comprehensively assessed in this paper. SMW accrues ligninolytic enzymes such as laccase and peroxidase, with efficient mechanism to facilitate biodegradation of recalcitrant organic pollutants. It is vital in this context that future research should address immobilization of such enzymes to overcome quantitative and qualitative issues obstructing their widespread use in biodegradation. Therefore, dual benefit is gained from cultivating critical cash crops like mushrooms to meet the escalating demand for food resources and to aid in biodegradation. Hence, mushroom cultivation has positive environmental, social, and economic implications in developing countries like India.
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The material of this study comprises macrofungi specimens which were collected from different localities in Alanya district in the Mediterranean region between 1999 and 2001. As a result of field and laboratory studies 188 taxa belonging to two classes and 38 families were identified. Eleven taxa belonged to Ascomycetes and 177 to Basidiomycetes.
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This manual gives Information on some 114 species of Polyporaceae based on materials mainly collected by the authors during 1954-1993 from various parts of India, The authors also studied extensively the materials accumulated in other herbaria of Indian botanical establishments, particularly of the Botany Department, Presidency College, Calcutta, which maintains the voluminous collections of Polyporaceae of Dr S.R. Bose, and also of the Mycological Herbarium of the F.R.I., Dehra Dun. Besides, the authors studied collections authenticated from specialists on Polyporaceae. The genera and the species have been arranged alphabetically. Although taxonomic positions of the species have been determined utilising knowledge from different fields of study mentioned above, the key for generic and specific identifications has been based on basidiocarp characters only as it will be useful to everybody working with these fungi.
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Since the publication of the first edition, important developments have emerged in modern mushroom biology and world mushroom production and products. The relationship of mushrooms with human welfare and the environment, medicinal properties of mushrooms, and the global marketing value of mushrooms and their products have all garnered great attention, identifying the need for an updated, authoritative reference. Mushrooms: Cultivation, Nutritional Value, Medicinal Effect, and Environmental Impact, Second Edition presents the latest cultivation and biotechnological advances that contribute to the modernization of mushroom farming and the mushroom industry. It describes the individual steps of the complex mushroom cultivation process, along with comprehensive coverage of mushroom breeding, efficient cultivation practices, nutritional value, medicinal utility, and environmental impact. Maintaining the format, organization, and focus of the previous edition, this thoroughly revised edition includes the most recent research findings and many new references. It features new chapters on medicinal mushrooms and the effects of pests and diseases on mushroom cultivation. There are also updated chapters on specific edible mushrooms, and an expanded chapter on technology and mushrooms. Rather than providing an encyclopedic review, this book emphasizes worldwide trends and developments in mushroom biology from an international perspective. It takes an interdisciplinary approach that will appeal to industrial and medical mycologists, mushroom growers, botanists, plant pathologists, and professionals and scientists in related fields. This book illustrates that mushroom cultivation has and will continue to have a positive global impact on long-term food nutrition, health care, environmental conservation and regeneration, and economic and social change.
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The nutritional and medicinal properties of many macrofungi are well known and documented in Europe, China and Japan. However, such information is scanty and poorly known in Malaysia. This dearth of information is probably due to the lack of a traditional "mushroom culture" in Malaysia as well as a shortage of trained mycologists/fungal taxonomists. Cultivated mushrooms, e.g. oyster mushrooms (Pleurotus spp.), shiitake (Lentinula edodes), Jew's ear fungus (locally called monkey's ear fungus) (Auricularia spp.) and paddy straw mushroom (Volvariella volvacea) have long been utilised in Malaysia for food by the Malays, Chinese and Indians. However, amongst some local and many indigenous communities (aborigines), species of local macrofungi are utilised not only for food, but also as medicine and for spiritual purposes, including discouraging certain undesirable behaviour in children. Our observations indicate that some species of Auricularia, Cookeina, Cyathus, Favolus, Lentinus, Pleurocybella, Schizophyllum and Termitomyces are consumed as food. Species of Lignosus, Pycnoporus, Lentinus and Daldinia are used to treat various ailments or health related conditions. A species of Amauroderma is used to prevent fits while a species of Xylaria is used to stop bed-wetting in children.