Alysicarpus.'] LEGUMINOSAE. 337 



capitate. Pod a terete or turgid lomentum of several indehiscent 

 1- seeded joints. Seeds suborbicular, strophiole 0. 



Calyx shorter or very slightly longer than the first joint of the pod, 

 under *15 in. long: 



Pod moniliform, the joints turgid, subglobose, downy with minute 

 hooked hairs ; stem with rather short bristly hairs ; leaflets variable 

 in shape, elliptic or lanceolate, obtuse, inucronulate, often cordate 



at base 1, monilifer. 



Pod not or only occasionally moniliform, the joints turgid, tetra- 

 gonous, reticulate, nearly glabrous ; stems glabrescent ; leaflet 

 variable in shape from linear-oblong or -lanceolate to orbicular, 



usually cordate at base 2. vaginalis. 



Pod not moniliform, carved, the joints flattened, reticulate, with 

 both straight and hooked hairs ; stem with long bristly hairs ; 



leaflet orbicular, inucronate, pubescent 3. hamosus. 



Calyx much longer than the first joint of the pod, at least '2 in. long : 

 Calyx-teeth imbricate in fruit: 



Pod slightly moniliform, joints not transversely ribbed : 



Joints of pod smooth, glabrous ; leaflet linear or linear-oblong 

 1-3 in. long, narrow ; racemes 3-6 in. long, very slendrr 



4. bupleurifolins. 



Joints of pod reticulate, puberulous ; leaflet linear-lanceolate, 

 3-6 in. long, narrow ; racemes 6-12 in. long, rather stout 



5. longifolius. 



Pod moniliform, the joints strongly and closely ribbed trans- 

 versely ; leaves usually 1-, sometimes 3-foliolate, variable 



6. rugosus. 

 Calyx-teeth not imbricate in fruit: 



Flowers in dense terminal white-silky spikes ; leaflets linear- 

 oblong or -lanceolate, 3-ribbed from near the base ; pods monili- 

 form, the joints 3-4, strongly reticulate 7. pubescens. 



Flowers in terminal or axillary racemes on long pedicels ; upper 

 leaves often 3-foliolate : 



Pod only slightly exsert from the lanceolate golden-pilose 

 calyx-teeth, which are '3 in. long, the joints 3-4, large; leaflets 

 ovate, under 1 in. long ; racemes rather close, the pedicels 



5 in. long or less 8. racemosns. 



Pod much exsert from the setaceous pilose calyx-teeth, which 

 are '2 in. long, the joints 5-6, small ; leaflets often up to 1*5 in. 

 long and oblong ; racemes lax, the pedicels '5 in. long or more 



9. parviflorus. 



