105- LEGUMINOSAK 251 



50. Fruit winged, indehiscent. Receptacle (calyx-tube) very oblique. Petals 



subequal, yellow. Stamens bent downwards. — Species 5. West 



Africa and Madagascar Mezoneurum Desf. 



Fruit not winged. Receptacle not very oblique 51 



51. Fruit membranous, lanceolate, dehiscing in the middle of the valves. 



Seeds oblong. Sepals subequal. Petals oblong, subequal, yellow. 

 Stamens erect, hairy at the base. Ovary short-stalked. Ovules 2 — 3. 

 Trees. — Species i {H. campecheanum L.). Cultivated in the tropics. 

 Yields timber (log-wood), dyes, gum, and niedicaments, and serves also 



as a garden- and hedge-plant Haematoxylon L. 



Fruit leathery, dehiscing at the sutures or indehiscent. Seeds ovoid or 

 globose. Petals yellow or red. Stamens bent downwards. Ovules 

 few. — Species 10, of which 7 are natives of tropical and South Africa, 

 3 naturalized there as well as in Egypt and Madeira. They yield timber, 

 tanning and dyeing materials, oily seeds, and medicaments, and are also 

 used as garden- and hedge-plants. (Including Guilandiua L.). 



Caesalpinia L. 



52. (39.) Anthers attached by the base or nearly so, rarely by the back, and 



then opening by apical pores. Seeds usually albuminous. [Tribe 



CASSIEAE.] . " 53 



Anthers distinctly attached by the back, opening by longitudinal slits. 

 Seeds usually exalbuminous. Trees or shrubs 58 



53. Petals I — 2 or o. Ovules 2 — 3. Fruit indehiscent, 1-2-seeded. Trees. 



Leaves unequally pinnate 54 



Petals 3— 5 55 



54. Stamens 2 — 3. — Species 10. Tropics. They yield timber and edible 



fruits from which an intoxicating drink is prepared. . Dialiura L. 

 Stamens 8--10. Petals none. — Species i. East Africa. Yields timber. 



Andradia Sim 



55. Petals 3, narrow, yellow. Fertile stamens 2 ; anthers opening by a ter- 



minal pore. Staminodes 3, petaloid. Ovules 4 — 5. Trees. Leaves 

 unequally pinnate. — Species i. Equatorial West Africa. Yields 



timber Distemonanthus Benth. 



Petals 5. Stamens 4^ — 10 5^ 



56. Sepals 4. Petals unequal, red. Stamens 4 — 5, some of them with cohering 



anthers. Ovules 2. Fruit 4-winged. Leaves unequally pinnate. — 

 Species i. Equatorial West Africa. {Oligostemon Benth.) 



Duparquetia Baill. 

 Sepals 5. Leaves equally pinnate or simple 57 



57. Leaves simple, imdivided. Stamens 10. Filaments thickened above. 



Anthers opening below the top. Ovules few. Fruit fleshy, with 

 transverse partitions. Trees. — Species 2. Madagascar. 



Baudouinia Baill. 



Leaves pinnate. — Species 40. They yield timber, gum, tanning and 



dyeing materials, fish-poison, medicaments (especially senna-leaves). 



