F. Bouman

F. Bouman
University of Amsterdam | UVA · Institute for Biodiversity and Ecosystem Dynamics

PhD

About

82
Publications
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1,719
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January 2008 - present

Publications

Publications (82)
Article
The embryology and seed structure of Paepalanthus sect. Actinocephalus species were studied. The embryological and structural seed characters fit well with those of the other commelinaceous families. Within the Commelinales sensu Dahlgren, Eriocaulaceae and Xyridaceae represent two embryologically close families. In Paepalanthus sect. Actinocephalu...
Article
The ovule primordium of Costus is trizonate and both its integuments are dermally initiated. With other evidence, this strongly suggests that most, if not all, monocotyledons have dermally initiated integuments, indicating a derived status. The mature seed coat of Costus is completely formed by the outer integument and its principal mechanical laye...
Article
This study has shown for the first time that the middle layer (or layers) of the outer integument is (are) of subdermal derivation in at least some taxa of the Cruciferae. The outer integument is initiated in the Cruciferae in three different ways, viz. subdermally (Brassica, Sinapis), partly subdermally and partly dermally (Lunaria), or completely...
Article
VENTURELLI, M. & BOUMAN, F., 1988. Development of ovule and seed in Rapateaceae. The structure of the ovules and/or seeds of twelve species of Rapateaceae were studied, some additional embryological characters also being recorded. The ovules are always anatropous, bitegmic and crassinucellate, but they differ in the shape, size and in thickness of...
Article
The mode of germination of representatives of 89 genera of the Cactaceae, 4 genera of Portulacaceae and 1 genus of Phytolaccaceae was studied. Most of the species of the Cactaceae germinate by means of a seed lid (operculum). In the Cactaceae studied 11 kinds of germination could be distinguished, 3 of which were with, and 8 without, operculum form...
Article
Full-text available
Recent phylogenetic analyses based on molecular markers have resulted in a solid phylogeny of Viburnum with 12 well-defined clades. This has allowed us to focus on character evolution, endocarp and seed characters in particular. Members of Viburnum bear drupes that differ considerably between clades. Characters such as pyrene shape and grooving, nu...
Article
Anther development, microsporogenesis and microgametogenesis in several species of Heliconia were investigated as part of a complementary embryological study of the Heliconiaceae. All studied Heliconia species present bithecate and tetrasporangiate anthers with fertile pollen grains; only H. rivularis, a natural hybrid, presented sterile pollen gra...
Article
The developmental anatomy and morphology of the ovule and seed in several species of Heliconia were investigated as part of an embryological study of the Heliconiaceae and to provide a better understanding of their relationships with the other families of the Zingiberales. Heliconia species have an ovule primordium with an outer integument of both...
Article
Full-text available
The dispersal units as seeds and fruits of the monocotyledonous genera in the páramo of equatorial America are described and illustrated with SEM photos. The monocotyledonous genera are mainly of neotropical and to a lesser extent of wide-temperate origin. Wind is the main dispersal vector and animals/humans and water also play an important part. T...
Article
On the basis of a recent checklist of plant diversity in páramos, diaspores collected from herbaria were studied for adaptations to dispersal on animals and by water. This study shows that the páramo flora has a relatively high percentage of genera with morphological adaptations to epizoochorous and to hydrochorous diaspore dispersal. Genera with h...
Article
Full-text available
Cannaceae seeds have been analysed regarding seed coat structure, germination and macromolecular composition of the seed coats. Data of several mass spectrometric techniques were combined with those of microscopic and histochemical techniques to acquire insight into the functions of the seed coat.Cannaceae seeds have an exotestal layer of Malpighia...
Article
Barbeya oleoides has a bitegmic, crassinucellate and anatropous ovule. The inner and outer integuments are about five layers thick and not vascularized. The endosperm is initially nuclear, to become cellular later. The mature seed coat is unspecialized, remains parenchymatic and is locally compressed, except for the exotesta and the tanniniferous e...
Article
Full-text available
Dirachma has a bitegmic, crassinucellate and anatropous ovule with a single median provascular tegumentary bundle. The seed coat is characterized by an exotesta and an endotegmic pigment layer. Although the fruit ofDirachma superficially resembles that of theGeraniaceae s. str., the characters of ovule and seed do not support a relationship with th...
Article
Full-text available
SUMMARY The results of an exploratory study on seed morphology of Miconia Ruiz & Pavón (Melastomataceae) are presented. Seeds of 75 species, mainly from north-western South America, including representatives of all 12 sections of Miconia, were examined, 57 by SEM. Miconia shows an appreciable diversity in seed structure. Twelve major seed types are...
Article
Mature seed coats of representatives of all three genera of Musaceae were analysed for macromolecular composition with various mass spectrometric techniques and compared with scanning electron microscopy and light microscopy in combination with histochemical techniques. Mass spectrometric techniques are more sensitive and more specific in identifyi...
Article
A full description is given of the hitherto poorly known NE African monotypic genus Bottegoa, and a multidisciplinary approach is used to determine its taxonomic position. Clearly, Bottegoa is very atypical of Sapindaceae, in which family the genus has been accommodated since its first description in 1916. Pollen morphology suggests a place in the...
Article
The genera of theRafflesiaceae show a marked diversity in the structure of their ovules and seeds. Evolutionary trends are recognizable in ovule orientation and number of integuments. A change from anatropous ovules inApodantheae andMitrastemoideae towards incomplete anatropy inRafflesieae and orthotropy inCytineae occurs, next to a change from bit...
Article
Anatomical characteristics of peatified Calluna vulgaris stems isolated from a selection of Northwest European raised bog peat deposits were compared with intact stems in order to reveal anatomical modifications caused by the peatification process. Four main decomposition processed were discerned: (1) loss of structural integrity of cell walls and...
Article
In zonal vegetation of the páramo Boca Grande (Sumapaz), in the Colombian Cordillera Oriental, the dispersal and growth form spectra of the different vegetation zones are described. With increasing altitude the abundance of the zoochorous plant species decreased while anemochory increased. A possible relationship between the mode of dispersal and t...
Article
The ovules and seeds of Canna show some striking differences to those in other zingiberalean families. The pachychalazal development of the ovule results in a seed of which only a small part of the testa is of tegumentary origin. A silicified endotesta, characteristic of the order, is lacking. The mechanical layer of the seed is formed by a continu...
Article
The embryology and seed structure of Mayaca fluviatilis was studied. The embryological and structural seed characters clearly support the assumption of a separate familial status of the Mayacaceae. Most of the embryological and seed characters fit well in with those of the other commelinaceous families, but also suggest more reticulate relationship...
Article
The micromorphological characters of seeds of Begonia solananthera, B. integerrima and B. procumbens provide additional arguments for the delimitation of Begonia Sect. Solananthera. The seeds clearly deviate from those of most sections of Begonia. The scobiform seeds have air-filled testa cells with bulging outer cell walls on their micropylar part...
Article
The ovule ofGnetum gnemon has three envelopes around the nucellus. The outer one forms two clear swellings at the lateral sides during the early developmental stages. The middle envelope also shows two swellings in many cases arranged decussately with respect to those of the outer one. All these swellings become obscure or disappear later. The inne...
Article
The ovule of Potamogeton natans is crassinucellate, bitegmic and ortho-campylotropous. Both integuments are dermal in origin and develop by intercalary growth. The seed coat consists of the compressed layers of the integuments, of which only the outer layer shows cell wall thickenings. The campylotropous curvature differs from the usual types and i...
Chapter
Of the first classical microscopists, Grew (1671) and Malpighi (1675), the latter was so impressed by the analogous processes of seed maturation and fetal development that he applied the terms “amnion” and “chorion” to the envelopes of the ovule. Grew and Malpighi attempted an ontogenetic approach, and studied ovules and developing and mature seeds...
Chapter
The seed functions as the reproductive unit of the Spermatophyta (seed plants), and links the successive generations. Other important seed functions concern dispersal and survival under cold, dry or other inclement conditions. There is an immense diversity in the internal and external structure of seeds. These differences are, to an appreciable ext...
Article
Begonia seeds can be distinguished from all other angiospermous seeds by the presence of a ring of collar cells under the micropylar-hilar part of the seed, which acts as an operculum during germination. Moreover, the differences in size, epidermal pattern, form of the cells and sculpturing of the testa provide additional characters, which can be o...
Article
The development of ovule and seed of Stanfieldiella imperforata was studied. As in all other monocotyledons studied, both integuments are dermally initiated. The seed coat of Stanfieldiella is formed by the outer layer of the inner, and the silicified, innermost layer of the outer integument, the other cell layers of the outer integument forming a...
Article
Hypocotyls of dark-grown 6-day-old seedlings of Phaseolus vulgaris L. proved to be sufficiently homogeneous to permit studies relating the rate of cell elongation to the composition of the primary cell walls. Whereas the levels of cellulose and uronic acids remained practically constant during and after cell extension, all other components showed m...
Article
The ovule primordium of Dichapetalum mombuttense seems to be trizonate. The ovule is tenuinucellate and both integuments are of dermal derivation.During seed development the whole inner integument and a part of the outer integument are resorbed.The outer integument is vascularized. The seed-coat is exotestal and consists of a differentiated outer l...
Article
In Gentiana both dermal and subdermal cells are involved in integument formation. The sequence and positions of the dermal and subdermal initials are reminiscent of the situation in bitegmic ovules and render it plausible that this single integument is derived from a dermal inner and a subdermal outer integument by the process of integumentary shif...
Article
The ovule primordium of Nigella damascena is three-zonate. The nucellus of most ovules is crassinucellate. The inner integument is of dermal origin, whereas the outer integument is initiated subdermally. These ovule characteristics correspond with those of the supposedly most original type of the angiospermous ovule. The ovule can be used as a base...
Article
The ovule of Glycosmis arborea is anatropous, crassinucellate and unitegmic. This constitutes the first record of unitegmy in Rutaceae. The ovule primordium is tri-zonate. Both subdermal and dermal cells are involved in the initiation of the single integument.The seed coat formation is quite different from that found in other rutaceous taxa. The po...
Article
Despite the great differences in type of seed dispersal and seed structure, Liriodendron and Magnolia show similarity in their ovule ontogeny and in the early phases of seed development. The ovule primordium is 3-zonate; the inner integument is dermal, and the outer integument subdermal in origin. The cells of the inner epidermis of the outer integ...
Article
Typological and ecological considerations point to the homology of the outer integument of the bitegmic chlamydospermous and angiospermous ovules with the single integument of the “lower” cycadophytic Gymnosperms. The inner integument either originated de novo or developed out of an accessory organ of the ovule (for which the membranous extension o...
Article
Drimys winteri has an anatropous, crassinucellate type of ovule with two non-vascularized integuments. Both the inner integument (i.i.) and the outer one (o.i.) are of dermal derivation. The integuments consist of three, or locally sometimes two or four layers of cells. The dermal initiation of the o.i. is in marked contrast with the subdermally in...
Article
The histogenetic development of the integuments of two representatives of the Magnoliaceae, Magnolia stellata and M. virginiana, was studied. The mode of development is the same in these two species. The two integuments have a different form of initiation: The inner integument (i.i.) is wholly of dermal derivation, whereas the primordium of the out...
Article
Detailed information concerning the initiation and subsequent development of the integuments in representatives of the Polycarpicae appears to be at variance with the conventional carpel theory. The integuments of Lactoris fernandeziana Phil. are completely of dermal origin. The inner integument is most probably only two-layered during its earlier...
Article
SUMMARYA case of twin nucelli in an ovule of Pterocarya fraxinifolia, originated from a cleavage of the nucellus primordium and presumably representing a hitherto unrecorded type of polyembryony in Juglandaceae, is discussed. The qualification of this category of polyembryony as “false polyembryony” according to the conventional classification of E...
Article
SUMMARYA histogenetic study of integument development in two juglandaceous genera indicates that in these taxa the integument is formed by both dermal and subdermal cells of the second and third layers of the floral apex (in contradistinction to the exclusively dermal origin recorded in a number of cases). The integument initiates as two individual...

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