KSIĄŻKI POWIĄZANE ZE SŁOWEM «DITHECAL»
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The typical anther is dithecal, having two thecae with typically four
microsporangia. In a very few taxa, such as the Cannaceae and Malvaceae,
anthers are monothecal, having one theca with typically two microsporangia.
Finally, an extreme ...
2
Plants in Mesozoic Time: Morphological Innovations, ...
... continuation Anther Basifixed Basifixed Dorsifixed Basifixed attachment
Number of Tetrasporangiate Tetrasporangiate Tetrasporangiate
Tetrasporangiate sporangia Number of Dithecal Dithecal Dithecal Dithecal theca
Connective Apical tip ...
3
Iconographic encyclopaedia of science, literature, and art
Order 69. El^agnace^:, the Oleaster Family. Flowers usually unisexual, rarely
hermaphrodite. Male flowers amentaceous, with two to four leaves forming the
perianth ; stamens three, four, or eight ; anthers nearly sessile, dithecal, introrse,
and ...
4
Iconographic Encyclopaedia of Science, Literature, and Art
Stamens perigynous, either single or in parcels of three or six, alternating with the
outer divisions of the perianth ; anthers dithecal, with longitudinal dehiscence.
Ovary partly adherent to the tube of the perianth, one-celled ; ovules numerous, ...
5
Monocots: Systematics and Evolution: Systematics and Evolution
Paepalanthus is characterised by having gamopetalous male flowers with 2-3
dithecal anthers, and female flowers with petals free and with the styles and
appendages becoming free at about the same level. This last character
distinguishes ...
Karen Wilson, David Morrison, 2000
6
A Manual of Botany: Being an Introduction to the Study of ...
682 e); anthers dithecal (fig. 683). Ovary superior, 1celled; ovule solitary, erect;
style 1; stigma 1 (figs. 682, 684-). Fruit a caryopsis, enclosed within the enlarged
persistent tube of the perianth (figs. 441, 685, 686). Embryo peripherieal (figs.
522 ...
John Hutton Balfour, 1863
7
A Manual of Botany ... Second edition
434 PASSIFLORACEE. their base so as to be monadelphous, or unequally
polyadelphous; filaments curved inwards; anthers dithecal, oblong. Ovary
surrounded by a fleshy disk, and adherent to the tube of the calyx, 5'celled ;
ovules 2 in each ...
John Hutton Balfour, 1860
8
Flowering Plants. Dicotyledons: Celastrales, Oxalidales, ...
... sometimes 0, more numerous than the sepals in Bauera; androecium usually
diplostemo- nous, sometimes uniseriate or multiseriate, rarely polyandric;
filaments slender, exceeding petals; anthers dithecal, opening longitudinally,
somewhat ...
9
The Anther: Form, Function, and Phylogeny
Each unit consists of a centrally positioned dithecal anther and two laterally
positioned monothecal anthers (Figs. 49-51). These androecial units are
particularly interesting because each has a form similar to the 'stamen' of
Chloranthus ...
William G. D'Arcy, Richard C. Keating, 1996
10
Hooker's Icones Plantarum
Prain, when founding the genus Mansonia, discussed the anomaly of
monothecal anthers in the Sterculiaceae, but the finding of a species of Mansonia
with dithecal anthers makes a reconsideration of this problem profitable.
Whatever view is ...
