105. LEGUMINOSAE 245 



FAMILY 105. LEGUMINOSAE 



Leaves usually compound and stipulate. Anthers 2-celled. Ovary superior, 

 i-celled. Ovules inserted at the ventral suture. Style simple, but sometimes 

 with a tooth near the apex. Stigma entire. Fruit i-, 2-, or transversely 

 several-celled, opening in two valves or along the ventral suture, or separating 

 transversely in two or more joints, or indehiscent. — Genera 261, species 3300 

 {FABACEAE, including PAPILIONACEAE. CAESALPIN [ACEAE and 

 MIMOSACEAE.) (Plate 67.) 



1. Petals valvate in bud. Flowers regular. Leaves twice pinnate, rarely 



{Acacia) reduced to the broadened stalk. [Subfamily MIMOSOIDEAE.] 2 

 Petals imbricate in bud or wanting. Flowers more or less irregular (some- 

 times nearly regular.) 28 



2. Calyx with imbricate aestivation. Unarmed trees. [Tribe PARKIEAE]. 3 

 Calyx with valvate aestivation 4 



3. Flowers in long spikes, yellowish. Fertile stamens 5, sterile ones 10 — 15. — 



Species 3. West Africa. They yield timber, oil, and edible seeds 



(ovala-seeds) Pentaclethra Benth. 



Flowers in globular or club-shaped heads. Fertile stamens 10. — Species 

 7. Tropics. They yield timber, tanners' bark, vegetables, medica- 

 ments, edible fruits, from which a drink is prepared, and oily seeds, 

 which are also used as a condiment, a substitute for coffee, a fish-poison, 

 and for improving bad water Parkia R. Br. 



4. Stamens as many or twice as many as the petals 5 



Stamens more than twice as many as the petals. Trees or shrubs . . 25 



5. Anthers without glands. [Tribe MIMOSEAE.] 6 



Anthers crowned, at least in the bud, by a sometimes caducous gland. 



Stamens 10 9 



6. Fruit dehiscing by two valves which separate from the persistent sutures. 



Petals united below 7 



Fruit dehiscing by two valves which do not separate from the sutures, or 

 indehiscent 8 



7. Fruit and seeds slightly 4-angled, the former prickly. Petals red. Stamens 



8—10. Herbs or undershrubs. Flowers in heads. — Species i. West 



Africa Schranckia Willd. 



Fruit and seeds flat. — Species 20. Tropics to Egypt, one species 

 naturalized. Some yield timber or medicaments or serve as ornamental 

 plants Mimosa L. 



8. Fruit broadly linear. Seeds placed transversely. Petals free, white. 



Stamens 10. Ovary stalked. Unarmed shrubs or trees. Flowers in 

 heads. — Species i (L. glauca Benth.). Naturalized in the Tropics. It 

 yields timber, fodder, edible fruits, ornamental seeds, and medicaments. 



Leucaena Benth. 

 Fruit narrowly linear. Seeds placed obliquely or longitudinally. — Species 

 7. One of them naturalized in the Tropics, the others natives of Mada- 

 gascar. Seeds used as ornament. {Acuan Medik.) Desmantlius Willd. 



