DICOTYLEDONS. LEGUMINOS^E. Trifoltum. 269 



* Keel of the cor. terminating in a straight point; upper suture of the 

 legume with its margins introflexed. (Oxytropis, Decand.} 



\. A. iiralensis, silky, stem none, scape longer than the leaves, 

 legumes erect ovato-cylindraceous inflated pubescent 2-celled, 

 style persistent, p. 216. 



2. A. campestris, somewhat silky, stemless, scape about the same 

 length as the leaves, legumes erect ovate inflated pubescent 

 semibilocular. p. 217. 



** Keel of the cor. obtuse. Legume with the lower suture having its 

 margins introflexed. (Astragalus, Decand.) 



3. A. hypoglottis, stem prostrate, leaflets slightly emarginate, le- 

 gumes erect capitate hairy their cells 1-seeded. p. 217. 



4. A. glycyphyllos, stem prostrate, legumes somewhat triangular 

 curved sessile glabrous, leaves longer than the peduncles, leaf- 

 lets oval. p. 217. 



-f--H-f- Legume of 1 cell, one- or many -seeded, not jointed. 

 * Flowers racemose (Mel'dotus, Decand.). 



12. TRIFOLIUM. 



Legume (in general) shorter than the cat., 1- or many-seeded, 

 indehiscent, deciduous. 



* Flowers racemose. 



1. Tr. officinale, legumes racemed naked 2-seeded rugged, sti- 

 pules lanceolato- subulate undivided, leaflets obovato-oblong 

 toothed, stem erect, p. 217. 



** Flowers more or less capitate. 

 t Legumes naked, many-seeded. 



2. Tr. ornithopodioides, legumes naked subternate with about 8 

 seeds twice as long as the cal,, leaflets obcordate toothed at the 

 extremity, stems decumbent, p. 218. 



ft Legumes covered by the cal., many -seeded. 



3. Tr. repens, heads umbellate, legumes with 4 seeds, cal. teeth 

 unequal, leaflets obcordate serrulate, stem creeping, p. 218. 



ttt Legumes covered by the. cal., \-eeded. 



4- Cal. (hairy) not inflated after flowering. Standard of the cor. 

 deciduous. 



4. Tr. pralense," heads dense ovate, lower tooth of the cal. shorter 

 than the tube of the monopetalous unequal cor., leaflets oval 

 nearly entire, stem ascending," Willd. 



5. Tr. medium, " heads lax somewhat globose solitary, lower tooth 

 of the cor. as long as the tube of the monopetalous nearly equal 

 cor., leaflets elliptical minutely serrated and striated with veins, 

 stem branched zigzag," H'itld. 



