The Genera of Leguminosae-Caesalpinioideae and Swartzieae
| The Genera of Leguminosae-Caesalpinioideae and Swartzieae | |
Habit and leaf form. Trees, or shrubs; without tendrils; unarmed. Leaves compound; pinnate; paripinnate. Leaflets without a continuous marginal nerve (with intramarginal nerves).
Inflorescence and floral morphology. Flowers small; hermaphrodite; not pentamerous throughout; departing from pentamery in the calyx and in the corolla; in simple racemes; not distichous. Inflorescences axillary; of racemose units. Bracts absent at anthesis. Bracteoles present; small, not enclosing the flower buds; absent at anthesis; free. Hypanthium present (short). Length of floral tube relative to total hypanthium plus calyx length, about 0.25. Calyx polysepalous; 4 partite (white); imbricate. Corolla absent. Disk present and conspicuous. Androecium of ten parts; members markedly unequal (anthers didynamous, very small); without staminodia. Fertile stamens 10. Anthers attached well above base of connective. Dehiscence lateral. Ovary stipitate.
Fruit, seed and seedling. Fruit indehiscent (samaroid, 1 distal seed); conspicuously winged; without markedly twisting or enrolling valves. Seeds with a straight or slightly oblique radicle.
Pollen ultrastructure. Tectum punctate; rugulose punctate. Length of colpi greater than one half pole to pole distance.
Cytology, geography, etc. 2 species. Madagascar. Madagascar. Not widely cultivated.
Tribe. Detarieae.
The interactive key provides access to the character list, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting specified attributes, and summaries of attributes within groups of taxa.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 1993 onwards. The genera of Leguminosae-Caesalpinioideae and Swartzieae: descriptions, identification, and information retrieval. In English and French; French translation by E. Chenin. Version: 19th October 2005. http://delta-intkey.com’.