I ri 



I, - J M "--^i 



138 



CONTRIBUTIOXS FROM THE NATIONAL HERBARIUM. 



morous, more rarely 1 to 3, without stipols. 

 (Aeschynomeninae.) 

 Stamen sheath split on the upper odge or 

 entire. 



Stamen slu^ath split on the un(h*r edge 

 and soon after florescence also more or 

 less on the upper edge. 

 Stamens all connate in a closed tube, the an- 

 thers alternately longer and fixed m^ar the 

 base and shorter and versatile; flowers in 

 terminal or axillary spikes or heads, rarely 

 somt^what racemose; leaves pinnate, usu- 

 ally with few leaflets, not stipellute. (Sty- 

 los anthinae.) 



Calyx M'ith an elongated filiform tube; 

 leaves pinnate. 



Pud smallj distinctly articulated, 

 hooked at the en<l, ripening in the 

 air; loaves pinnate with only 3 



leaflets; flowers small, t(^rminal or 

 axillary, in dense hispidulous 

 spikes. 

 Pod large, not articulated, not 

 hooked at the end, ripening in the 

 soil; leaves pinnate, usually with 

 4, seldom with 3 leaflets; flowers 

 nither large, solitary, axillary with 

 long pedicels. 

 Calyx tube not elongated; leaves digi- 

 tate, with 2 or 4 leaflets. 

 Stamens 10, moiiadelphoua or dia<l(4ph(tus; pod 

 indehiscent; erect or scandent shrubs or trees, 

 with imparipinnate leaves and entire leaflets, 

 (Dalbekgieae.) 

 Pod membranous, papyraceous, or coriaceous 

 to ligneous, often compressed and winged, 

 in any casi? not drupaceous. 



Leaflets alternate, rarely reduced to 1. 



(PTKliOCAUriNAE.) 



Anthers small, terminal, erect, the 



culls dehiscing by a small apical 



slit ; pod suborbicular. 

 Anthers dorsifixed, opening longitu- 

 dinally. 



Calyx blunt at the base, brac- 

 teoles usually somewhat or- 

 bicular; standard silky out- 



38. Pidetia (p, 180). 



39. Aeschynomene {j>, 181) 



40* Stylosanlhes (p. 183) 



41. AracMs (p. 184) 



42. Zornia (p. 185). 



45. Dalbergia (p. 192). 



side; pod thickly coriaceous. 46. Drepanocarpus (p- 193) 

 Calyx turbinatt^ at the base; 

 bract coles small, deciduous; 

 standard glabrous ; pod pa- 

 pj^raceous or th i id y coria- 

 ceous, more or less incrassated 

 in the (*enter. 47. Pierocarjms (p. 194). 



