180 Plants collected during a journey 



from Hedysarum, of which it includes nearly all the trifoliate 

 species. 



99. Lathykus polymorphus, Nutt. gen. ii. p. 97. DC. 

 prod. ii. p. 371. L. decaphyllus and Vicia stipulacea, Pvrsh 

 fi. ii. pp. 471 and 739. On the Missouri and Platte. June. 



Obs. Peduncles G-8-flowered. Seeds as large as in the 

 common pea, and abundant. James. 



100. L. myrtifolius, Muhl. 7 Caule erectiusculo, tetra- 

 gono, non alato ; foliis 3-jugis, foliolis oblongo-lanceolatis, 

 acutiusculis, mucronatis, rigidiusculis, glabris, venoso-striatis j 

 stipulis semisagittato-lanceolatis, acuminatis ; pedunculis 4-5- 

 floris, folio longioribus ; laciniis calycinis lanceolatis, acutis. 



06s. Flowers very large ; purple ; leaves 1-2 inches long, 

 3-4 lines broad, thicker and more rigid than is usual in this 

 genus ; stipules very narrow. 



101. Orobus ? longifolius, Nutt. gen. ii. p. 95. DC. 

 prod. ii. p. 3S0. Psoralea longifolia, Pursh Jl. ii. 741. 

 Forks of the Platte. 



Obs. Mr. Nuttall described the legumes of this plant in a 

 very young state. When mature, they are very much inflated, 

 as in Colutea arborescens. They are about an inch and a half 

 long, membranaceous, stipitate in the calyx ; smooth ; seeds 

 about 12 in each legume, affixed to the upper suture, which is 

 a little introflexed, as in Oxytropis, reniform, tumid. Funi- 

 culus free. Rilum punctiform. This plant is probably not 

 a species of Orobus. It appears to be more nearly allied to 

 Phaca. I have not seen it in flower. 



102. O. DisPAii, Nutt. gen. ii. p. 95. DC. prod. ii. p. 

 380. With the preceding. 



Obs. This also is considered as a doubtful Orobus, by De 

 Candolle. 



103. Phaseolus perennis, Walt. Ell. sk. ii. p. 223. 

 DC. prod. ii. p. 391. On the Missouri. 



Obs. I am satisfied that the P. macrostachyus of Elliott 



