S4 CLASS XVII. ORDER X. 



2/, y-'^caroliniamtsy erect, leafets (about 41) haiiy 

 beneath, iegumes swelled. 1^. y.-^secundusy pro- 

 cumbent, legumes pointing one-way. 1/., p. 



4. Legi(me» about l-seeiled* 



Trifolium. Flowers sub-capitate : legume in- 

 cluded in the calyx, not opening by valves, 2 to 4- 

 seeded. (Leaves always ternate.) 32. 93 — Jira- 

 tense (red clover) heads dense-ovate, 4 of the calyx- 

 teeth equal, stipules awned. %, r. — rafiens' (\\\\i\.Q 

 elover) creeping, heads umbelled, leafets emargi- 

 nate serrulate. %. w. — arvense (field clover, or 

 rabbit-foot) heads cylindric, calyx-teeth bristte- 

 form longer than corol, leafets narrow- obovate. ©. 

 r-w. 



;Melilotus. Flowers racenoed : calyx tubular, 

 5-toothed : keel simple, shorter than the wings and 

 banner : legume rugose, longer than the calyx. 

 (Taken from the trifolium.) 32. 93 — officinalis (me- 

 lilot clover) stem erect, stipules lance-subulate, w. 



I..ESPEDEZA. Calyx 5-parted, divisions nearly 

 equal : keel of the corol transversely obtuse : le- 

 gume lens-form, unarmed, 1 -seeded. (Leaves al- 

 ways ternate. Taken from the hedysarum.) 32. 

 93 — zafiitata (bush-clover) erect, leaves sessile 

 "with oblong leafets, little heads in terminal heaps, 

 legume much smaller than the calyx- p. A varie- 

 ty, aiigustifolia^ leaves lance-linear, peduncles long. 

 — pohjstachiay erect and very downy, leafets round 

 ovate, legume and calyx equal, w. — firocumbens^ 

 p.rocumbenty hairy, leafetvS ovate. 11. p. 



5. Legumes joint ed^ or in ioments. 



Hedysarum. Calyx Scleft ; keel of corol trans- 

 versely obtuse : loment many-jointed, joints 1- 

 sceded, compressed, generally hispid. (Most, or 

 all, the species in the Northern States have ternate 

 leaves.) 32. 'OZ'^canadense (bush-trefoil) leaves 



