Sabu Mamiyil

Malabar Botanical Garden and IPS

This book includes an introduction about Impatiens, detailed study area focusing the six protected areas (four National Parks and two Wildlife Sanctuaries) of Western Ghats, India. The vegetation types are also mentioned with photographs. It is followed by the general morphology of balsams, a short methodology adopted in the work and list of specie...

Solid state fermentation holds tremendous potentials for the production of the enzyme amylase by Aspergillus niger. Different solid substrates like banana pseudo-stem and leaf vein are rich in starch. These agro-industrial residues are cheap raw materials for amylase production. Aspergillus niger isolated from the bread was identified to be the bes...

The paper deals with the seed morphology and anatomy of 32 wild Indian Musaceae by using light microscopy (LM) and scanning electron microscopy (SEM). This is the first comprehensive investigation into the seed micro-morphological and anatomical aspects of two genera of the family. Seed characters including shape, size, surface sculpturing (LM and...

Banana is one of the most common and widely used food all over the universe from ancient time. In this work mainly the nutrition analysis of various commonly cultivated banana varieties in Kerala has been used such as Najalipoovan, Poovan, Etha, Palenkodan, Robesta, Chemkadali, Pachakadhali, Sundari and Kannan. The peel contain about 40% of weight...

A new variety of Ophiorrhiza L., O. medogensis H.Li var. shiyomiense Hareesh & M.Sabu, var. nov. is described from Shi-Yomi district, Arunachal Pradesh. In addition, O. medogensis H.Li from Tibet/China is recorded for the first time from India from Dibang Valley District of Arunachal Pradesh. Based on the protologue, herbarium specimens and living...

A new variety of Zingiber neotruncatum T.L.Wu, K.Larsen & Turland (Zingiberaceae) from Mizoram, North East India, is described here as Z. neotruncatum var. ramsawmii Lalramngh., M.Sawmliana, T.Jayakr. & M.Sabu. A detailed description, distribution and ecology along with colour photographs are provided for easy identification.

Eight major compounds were isolated and characterised from the rhizomes of Zingiber nimmonii (J. Graham) Dalzell by chromatographic and spectroscopic techniques. The compounds characterised by recording its Nuclear Magnetic Resonance Spectra (1D NMR, 2D NMR) together with Mass Spectra under ESI/HRMS and IR Spectra. The major compounds characterized...

Banana one of the most popular consumed fruits in the tropical and sub-tropical region. Most of the edible bananas present now a days are derived solely from Musa accuminata Colla or Musa balbisiana Colla or a hybrid between the two wild diploid species. The main objective of this research work is to provide an overview of various by-products from...

Two new species of Zingiber viz. Z. cornigrum and Z. campanulatum from Arunachal Pradesh, NorthEast India are described. In addition to morphology, data from anatomy, pollen morphology and molecular biology are also used. A key to the Zingiber Sect. Cryptanthium from Northeastern India is provided.

The genus Cautleya (Royle ex Benth.) Hook.f. in India is revised. The present study recognizes four taxa in the genus, including a new variety, Cautleya gracilis var. hispida Aishwarya & M.Sabu. The new variety is recognized mainly based on the relative length of corolla tube with calyx of the taxa under study. The corolla tube of the new variety i...

Banana one of the most popular consumed fruits in the tropical and sub-tropical region. Most of the edible bananas present now a days are derived solely from Musa accuminata Colla or Musa balbisiana Colla or a hybrid between the two wild diploid species. The main objective of this research work is to provide an overview of various by-products from...

Amomum arunachalense Hareesh & M. Sabu sp. nova (Zingiberaceae) is described from Arunachal Pradesh, northeastern India. It is similar to A. maximum, but differs from the latter by having a white rhizome with a pale brown center, an entire ligule, a labellum without lateral staminodes, an obtuse stamen crest and a non-winged, foveolate fruit. A det...

The new species Hedychium mechukanum M.Sabu & Hareesh is described from Arunachal Pradesh, India. It shows similarities to Hedychium urophyllum G.Lodd., H. coronarium J.Koenig, H. flavum Roxb. and H. chrysoleucum Hook. from Northeast India, and to H. qingchengense Z.Y.Zhu from China. A detailed description along with colour photographs are provided...

Taxonomic identity and occurrence of Ophiorrhiza codyensis (Rubiaceae), a little known endemic species from the Western Ghats is discussed along with its rediscovery after a gap of 106 years outside from its type locality. Detailed description of the species is provided with colour photographs, ecology and conservation status. In addition, a lectot...

Based on detailed studies of the protologues, types, herbarium and comparison with live specimens, Caulokaempferia dinabandhuensis Biseshwori & Bipin, Globba teesta S. Nirola & A.P. Das and Zingiber sianginensis Tatum & A.K. Das are reduced under Monolophus suksathanii S. Dey, Langhu & Bhaumik, G. andersonii C.B. Clarke ex Baker and Z. officinale R...

Amomum raoii, a new species and A. raoii var. oblongum, a new combination from Sikkim are described. Detailed descriptions, data on distribution and ecology are provided.

Two new balsams (Impatiens), I. tirbinensis and I. shiyomiensis are described from Arunachal Pradesh, India. Species shows affinities towards I. drepanophora and I. rugosipetala but distinct in many attributes. Detailed descriptions, distribution, ecology and colour photographs of the new species are provided along with the comparison of I. drepano...

Banana is one of the most important food crops all over the world. There are around 365 varieties of bananas available throughout the world. Banana is a traditional medicine for diabetes, cancer, diarrhoea and also highly nutritional food crop. In this study, commonly used varieties of banana are taken for characterization by morphology and genotyp...

Banana is one of the most important food crops all over the world. There are around 365 varieties of bananas available throughout the world. Banana is a traditional medicine for diabetes, cancer, diarrhoea and also highly nutritional food crop. In this study, commonly used varieties of banana are taken for characterization by morphology and genotyp...

Banana one of the most popular consumed fruits in the tropical and sub-tropical region. Most of the edible bananas present now a days are derived solely from Musa accuminata Colla or Musa balbisiana Colla or a hybrid between the two wild diploid species. The main objective of this research work is to provide an overview of various pest and diseases...

Soil borne diseases which are caused to various plants include a wide variety of soil microbes like fungi and bacteria, among which Fusarium wilt is one such disease caused by Fusarium oxysporum cubense in banana plants. Wilt disease or the panama disease of plant is among the most destructive disease of banana in the tropics and even the control m...

Amylases are well known for applications ranging from starch and food processes industry to medical applications. The increased demand for these enzymes in various industries has led to an enormous interest in developing enzymes with better properties such as raw starch degrading amylases. It is suggested that banana peel and male inflorescence cou...

Banana is an important fruit grown and consumed in tropics and sub tropic regions. It is the edible fruit usually seedless which can be grown in any climatic condition. It is rich in carbohydrates, fat, proteins, vitamins, minerals and water. A comparative study between 10 different Musa sp. in Kerala was conducted to study the various morphologica...

Solid state fermentation holds tremendous potentials for the production of the enzyme amylase by Aspergillus niger. Different solid substrates like banana pseudo-stem and leaf vein are rich in starch. These agro-industrial residues are cheap raw materials for amylase production. Aspergillus niger isolated from the bread was identified to be the bes...

Banana (Musa) is a fruit bearing plant belongs to the Musaceae family and mainly cultivated for it’s fruit, which is used as a nutritionally rich food item. The banana male bud is also used as a food item due to its high nutritional content. The different banana variety are found which differ in size, shape, appearance, fruit, nutritional value etc...

Soil borne diseases which are caused to various plants include a wide variety of soil microbes like fungi and bacteria, among which Fusarium wilt is one such disease caused by Fusarium oxysporum cubense in banana plants. Wilt disease or the panama disease of plant is among the most destructive disease of banana in the tropics and even the control m...

Banana is one of the most common and widely used food all over the universe from ancient time. In this work mainly the nutrition analysis of various commonly cultivated banana varieties in Kerala has been used such as Najalipoovan, Poovan, Etha, Palenkodan, Robesta, Chemkadali, Pachakadhali, Sundari and Kannan. The peel contain about 40% of weight...

A new species of Globba, G. kanchigandhii, from North-East India is described, illustrated and compared with its allied species. A detailed description, illustration, photographs, distribution, ecology, phenology and relevant notes also provided. A comparison table is also provided.

This book deals with the pollination ecology of eight species under five genera belong to the family Zingiberaceae. These are Alpinia calcarata, A. galanga, A. mutica, Curcuma aeruginosa, C. vamana, Etlingera elatior, Globba schomburgkii and Zingiber zerumbet. Here Alpinia calcarata, A. galanga, Curcuma aeruginosa and Zingiber zerumbet were very im...

A new species of Amomum from Nagaland is described and illustrated. The photographs and illustrations are provided. The species shows similarity with A. maximum in having bi-lobed ligule and white flowers and non-stoloniferous rhizome, but differs in slender habit, glabrous lamina, ligule with rounded apex, nonperishable, smaller bracteole, obtuse...

Musa × parahaekkinenii (Musaceae), a new manually crossed interspecific hybrid of two wild parent plants Musa coccinea Andrews (female) and Musa haekkinenii N.S. Lý & Haev. (male), is described and illustrated. A comparison of characters with its parents and a key to the new hybrid M. × parahaekkinenii are provided.

Taxonomic studies on the genus Ophiorrhiza in Andaman and Nicobar Islands resulted in the discovery of a new species from Saddle Peak National Park and Rutland Island. Previously reported species of Ophiorrhiza in these islands are keyed with reference photographs, ethnobotanical notes, and updated distribution maps.

BACKGROUND “Phytonutrients” have been reported to exert an incredible impact on the health care system and offer medical benefits comprising the prevention or treatment of life style associated diseases. Incidentally, we chose one of the most common and important plant family, Musaceae, for our present study and explored its antidiabetic potential....

A new synonym Meistera muricata is proposed for M. acuminata. The nomenclatural and identity confusions were resolved with typification in this paper. Detailed descriptions, illustration, photographs, etc. are provided. The affinities and variations of specimens are also discussed.

Thismia is a mycoheterotrophic genus in the family Thismiaceae. We report a new family record for Andaman and Nicobar Islands and a new species for India. A detailed description along with conservation assessment, colour photos, distribution map, and key to the species from India are provided.

Disporum mishmiensis, sp. nov. is described from Arunachal Pradesh, north-eastern India. A detailed description and colour photographs of D. leucanthum are provided to aid identification. A distribution map, notes on ecology and a key to Indian species are provided

Chemical composition of rhizome essential oils of Amomum agastyamalayanum and A. newmanii from south India were analyzed by gas chromatographic techniques. Major constituents in A. agastyamalayanum rhizome oil were allo-aromadendrene (16.2%), β-pinene (8.7%) and (E)-caryophyllene (8.5%). Santolina triene (42.2%) and α-pinene (17.1%) were the major...

Exomorphic and anatomical characters of seeds of five species of Costaceae were examined using light and scanning electron microscopy. Seed anatomy was investigated to observe seed structural diversity as a taxonomic aid for the identification of taxa and to explain the adaptive characters for seed dispersal syndromes. Morphometric and micromorphol...

Boeica clarkei, a new species is described from Arunachal Pradesh, northeastern India. This novelity resemble B. porosa but differ in having corolla externally pubescent, an inconspicuous disc and transversely dehiscing anthers. From B. multinervia it differs in being pubescent rather than woolly, and in having only 8–12 paired lateral leaf veins,...

Amomum riwatchii, a new species of Zingiberaceae from northeastern India is described and illustrated. It is similar to A. carnosum, but differs from the latter in having non-stoloniferous rhizome, oblong lanceolate lamina, 5−6 mm long ligule with entire apex, broadly ovate or orbicular dark red thick outer bract, calyx lobes with cuspidate or horn...

Amomum nimkeyense, a new species is described from Arunachal Pradesh, northeastern India. A detailed description of the plant, distribution and ecology along with colour photographs are provided for ease of identification.

A facile Lewis acid catalysed methodology towards structurally diverse sesquiterpenoid derivatives from readily available and abundant 11-membered natural product, zerumbone is developed. Starting from zerumbone, we could efficiently design and execute cyclisation processes for the inception of [5.7], [5.8] and [5.8.3] fused ring systems. It was de...

Garcinia gummi-gutta is endemic to Western Ghats in India. The plant is a good source of medicinally important phytochemicals. Restricted distribution, habitat destruction and over harvesting for medicinal uses leads to declining G. gummi-gutta population. For proper conservation, it is need to understand reproductive biology. Reproductive biology...

New Year Greetings 2018 showing flower of Impatiens pseudocitrina

Leptomischus flaviflorus, a new species from Arunachal Pradesh, India, is here described and illustrated. Detailed description, distribution, ecology, colour photographs, and key to identification for Leptomischus species are provided.

Ophiorrhiza jacobii (Rubiaceae) is described as a new species from Western Ghats, Kerala, India. The new species is similar to O. pseudofasciculata in its pubescent habit, densely pubescent terminal capitate cyme with linear lanceolate bract and bracteoles, stipules with bifid apex, etc., but differs in having decumbent stem, ovate to broadly ovate...

Ophiorrhiza jacobii (Rubiaceae) is described as a new species from Western Ghats, Kerala, India. The new species is similar to O. pseudofasciculata in its pubescent habit, densely pubescent terminal capitate cyme with linear lanceolate bract and bracteoles, stipules with bifid apex, etc., but differs in having decumbent stem, ovate to broadly ovate...

Two recently published species of Musa, viz., M. indandamanensis and M. paramjitiana, are synonymized under M. sabuana and M. balbisiana var. andamanica, respectively based on critical study of types and specimens deposited in ASSAM, CAL, CALI, MH and PBL and careful observation of live plants in their natural habitats during the intensive field ex...

Musa × calicutensis K. P. Smisha & M. Sabu hybrid nov. (Musaceae), a new manually crossed interspecific hybrid of two wild parent plants Musa haekkinenii (female) and Musa beccarii (male) is described and illustrated. A comparison of characters with a key to the new hybrid M. × calicutensis with its parents and related variety are provided.

Impatiens haridasanii, a new species, is described from Longding district of Arunachal Pradesh, northeastern India. Detailed descriptions, distribution, and ecology along with colour photographs are provided.

Impatiens rufescens var. agastyamalayensis was described based on a herbarium specimen of C.A. Barber collected in 1901 from Agastyamala. It has now been rediscovered from the same locality after more than a century. Present studies on fresh specimens revealed that the characters are strong enough to elevate the variety to species level, I. agastya...

Lysionotus gamosepalus var. biflorus, a new variety from northeastern India is described and illustrated with photographs. Information on its ecology is provided. The new taxon is morphologically similar to L. gamosepalus var. gamosepalus but can be easily distinguished by a combination of characters such as un-branched pair-flowered cyme, hairy co...

Impatiens nilalohitae is described from Arunachal Pradesh, Northeastern India. The new species shows similarities with I. adamowskiana and I. rugosipetala, but differs by having a 10–15-flowered inflorescence, dark purple flowers, and four lateral sepals, among other characters. A detailed description and colour photographs, as well as remarks on g...

Impatiens walongensis is described from Anjaw district of Arunachal Pradesh, North-East India. Detailed descriptions, distribution, and ecology along with colour photographs are provided.

Banana family, the Musaceae include a lot of wild seeded species to seedless cultivars. The cultivated bananas have attracted a good deal of research in many aspects, except taxonomy over years as they have great economic importance mainly in agriculture. However, little attention has been given to this group as they are taxonomically difficult due...

A new species of Ophiorrhiza is described from Arunachal Pradesh, North-East India. Ophiorrhiza debiana is compared with O. cordata, a Chinese species. Detailed description, distribution, ecology, phenology and relevant taxonomic notes are provided along with colour photographs.

In 2015, during a floristic expedition in northeastern India, a population of an unusual Zingiber Miller (1754: 525) was found near Durga Mandir, between Bomdilla and Balukpong, in West Kameng District, Arunachal Pradesh. At a first glance the species clearly belongs to section Cryptanthium Horaninow (1862: 27) in having a procumbent peduncle. Deta...

A new species of Rubiaceae, Ophiorrhiza meghalayensis Hareesh, A.Joe, M.Sabu & L.Wu is described from Meghalaya, North-East India. This species is allied to Ophiorrhiza caudipetala Deb & Mondal and O. hirsutula Wight ex Hooker but can be distinguished from the latter by its triangular calyx lobes, corolla without villous ring within and deeply keel...

Impatiens arunachalensis, a new species of Impatiens is described from the Upper Siang district of Arunachal Pradesh, northeast India. Detailed descriptions, distribution, and discussion of ecology along with colour photographs are provided.

Musa velutina subsp. markkuana was published based on morphological characters. Present studies on anatomy of lamina, midrib, petiole, bract, fruit peel and seeds, palynology and micromorphology of seeds of M. velutina and M. velutina subsp. markkuana have revealed that the differences are strong enough to treat the subspecies to species level, M....

Pleione arunachalensis, a new species is described from Lower Dibang Valley district of Arunachal Pradesh, North-East India. Detailed descriptions, distribution, ecology, colour photographs and key to identification for Indian Pleione is provided.)

The pollination biology of Syzygium caryophyllatum (L.) Alston (Myrtaceae) plants growing at Botanical Garden, University of Calicut, Kerala was studied. The inflorescence of S. caryophyllatum is terminal corymbose cymes. The flowers are white each has many ovules but only one ovule develops into seed. Hence fruit set and seed set are same in numbe...

Aim of study: Curcuma caesia (Family: Zingiberaceae) is being used in traditional medicine for the treatment of severe bronchitis and asthma. The aim of study was to evaluate antiasthmatic activity of various extracts of curcuma caesia rhizomes to validate its traditional use. Materials and methods: In the present study petroleum ether, ethanol and...

Aim of study: Curcuma zedoaria (Family: Zingiberaceae) is being used in traditional medicine for the treatment of severe bronchitis and asthma. The aim of study was to evaluate antiasthmatic activity of various extracts of curcuma zedoaria rhizomes to validate its traditional use. Materials and methods: In the present study petroleum ether, ethanol...

Mode of reproduction is generally considered to have long-range evolutionary implications on population survival. Because sexual reproduction produces genetically diverse genotypes, this mode of reproduction is predicted to positively influence the success potential of offspring in evolutionary arms race with parasites (Red queen) whereas, without...

Abstract Vitex trifolia L. is one of the important and popular herbal medicine of the family Lamiaceae. The species is used for fever, rheumatic pain and inflammation and also used analgesic and sedative. Restricted distribution, habitat destruction and over harvesting for medicinal uses lead to declining population. For proper conservation it is n...

Impatiens pseudocitrina from Anjaw district, Arunachal Pradesh, North-East India, is newly described and illustrated. Detailed descriptions, distribution, and ecological information, along with colour photographs and key to the closely related species, are provided for identification of the species.

Protandry was investigated in Dillenia suffruticosa (Griffth) Martelli. The species is highly specialized for its herkogamous, nectarless, pollen-only flowers with sternotribic pollination. Flower nature is revolver type. Wind pollination is absent and replaced by insect pollination regarded as a transitional state of evolution of advanced pollinat...

A detailed account of the genus Ensete (Musaceae) in India is presented, including a key to the two species known from the country. Updated descriptions and colour photographs of each species are provided, with notes on the phenology, ecology, distribution, cytology, morphological variation and uses. We also provide a brief history of the genus and...

Since the publication of Musa kattuvzhana K.C.Jacob, this taxon has not been recorded or included in any of the South Indian Floras. The correct identity of M. kattuvzhana is described here and Musa acuminata subsp. burmannica N.W. Simmonds and Musa banksii var. singampatti T.G. Nayar are reduced to synonymy. Detailed description, photographs and I...

Musa acuminata Colla (AA) 'Karivazhai', an interesting hill banana is endemic to Kolli hills of Tamil Nadu and is cultivated for its sacred uses there. The plant is characterized by the black pseudostem and fruits with an excellent flavour and taste. The present study was undertaken to explore the potential bioactive fatty acids and volatile compou...

Impatiens roingensis from Arunachal Pradesh, northeast India, is described as new. A detailed description of the plants, their distribution and ecology along with colour photographs are provided for ease of identification.

Didymocarpus moellerii, a new species from northeastern India is described and illustrated with photographs. Information on its ecology is provided as well. The new species is morphologically similar to D. glandulosus and D. tonghaiensis but can be easily distinguished by a combination of characters such as glabrous peduncle, orbicular purple bract...

Notes on taxonomic identity and history of M. rubra are provided and lectotype is designated here. Detailed description, photographs and illustration are provided for easy identification. M. laterita is treated as conspecific to M. rubra.

Amomum Roxburgh (1820: 75) is the second largest genus in the ginger family with about 150–180 species, widely distributed in Southeast Asia (Xia et al. 2004). The genus is characterized by having radical inflorescences, an absence of involucre of sterile bracts, reduced lateral staminodes and well-developed anther crests.

A new variety of Musa sikkimensis is described here as M. sikkimensis var. simmondsii. Notes on taxonomic identity and history of M. sikkimensis are provided. Isoneotype for M. sikkimensis and lectotype for Musa hookerii are designated. Detailed description, photographs and notes on distribution and ecology of both the taxa are provided for easy id...

India is considered as the centre of origin of bananas, both wild and cultivated. During the revision of the family Musaceae, as much of the specimens were collected from all over India and conserved in Calicut University Botanical Garden (CUBG), of which most of them are with high ornamental potential. This paper focuses mainly on such species whi...

The genus Asteropyrum J.R. Drumm. & Hutch. (Ranunculaceae) is recorded for the first time for India from Arunachal Pradesh. The species A. peltatum (Franch.) J.R. Drumm. & Hutch. was previously known to occur from southwest China, northern Myanmar and Bhutan. A detailed description along with details on habitat, distribution and photographs is prov...