Textbook of Theoretical Botany, Volume 2 |
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Page 1111
... petaloid . The change is seen in many genera of the Ranunculaceae , i.e. , Caltha , Eranthis and Helleborus , where the petals are either missing or are transformed into nectaries . Such an exchange of character affects other organs ...
... petaloid . The change is seen in many genera of the Ranunculaceae , i.e. , Caltha , Eranthis and Helleborus , where the petals are either missing or are transformed into nectaries . Such an exchange of character affects other organs ...
Page 1193
... petaloid struc- ture . In Cannaceae , a closely related family , the five staminodes form five separate petaloid segments and even half of the single fertile anther is petaloid , leaving only two pollen - sacs functional . The flowers ...
... petaloid struc- ture . In Cannaceae , a closely related family , the five staminodes form five separate petaloid segments and even half of the single fertile anther is petaloid , leaving only two pollen - sacs functional . The flowers ...
Page 1982
... petaloid or separable into calyx and corolla . The stamens are usually five or six in number but often only one is functional , the remainder be- coming petaloid . The ovary is composed of three carpels , generally trilocu- lar , with ...
... petaloid or separable into calyx and corolla . The stamens are usually five or six in number but often only one is functional , the remainder be- coming petaloid . The ovary is composed of three carpels , generally trilocu- lar , with ...
Contents
FLOWERS | 1071 |
POLLINATION AN INTRODUCTION | 1252 |
SEEDS FRUITS AND SEEDLINGS | 1481 |
2 other sections not shown
Common terms and phrases
actinomorphic anatropous androecium Angiosperms anthers antipodal apex axile axis basal base bracts calyx capsule carpels cells colour common contains corolla corolla tube cotyledons cross-pollination cultivated dehisce Dicotyledons dispersal distributed elongated embryo sac enclosed endosperm example female flowers fertilization filaments fleshy floral florets Flowering shoot flowers Fig fruit funicle gardens genera genus germination gynoecium hairs herbs hermaphrodite hypocotyl important inflorescence inner insect integument involucre later layer leaf leaves lobes loculus male flowers margins mature micropyle Monocotyledons nectar Nectar is secreted normal nucellus nuclei occur oosphere outer ovary ovules parietal perianth perianth segments petaloid petals placenta plants pollen grains pollen tube pollination mechanism produced rarely receptacle rhizome seeds self-pollination sepals separate showing shrubs single sometimes species stage stamens stem sterile stigma structure style sub-family surface testa tissue trees tropical unisexual usually vegetative visited wall whorl zygomorphic