14° Muhlenbergia, Volume 5 



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glabrous; lobes green, hirsute like the rest of the plant, the up- 

 per about 1.5 mm. long, cleft to the base into lanceolate divis- 

 ions, lower 3 mm. long, entire: banner with the edges turned 

 back, appearing as if shorter than the wings, when spread out 

 6 mm. long, 5 mm. wide; wings moderately inflated, open and 

 exposing the keel to a point a little above the lower calyx lobe: 

 keel moderately curved dorsally. 



I have not been able to definitely locate the place where 

 Lewis collected the type, but the date was June, 1804, and Nut- 

 tail's "plains of the Missouri, near the confluence of White 

 river, 1 ' is probably not far from the original locality. The 

 White river empties into the Missouri in southern South Da- 

 kota. 



Xnmerons specimens from Wyoming, Nebraska and South 

 Dakota differ from the Nevada plant in being stouter, more 

 branching, with more numerous racemes and larger flowers, the 

 shape of the parts being the same. So far I have seen no plants 

 with acute leaflets. Frequently they are doubled so that only 

 the lower surface is exposed, and this half of a leaflet may b? 

 responsible for the statement by some writers that they are acute. 



In the middle of sheet 20947 in the U. S. National Herbar- 

 ium is a plant of our small flowered Nevada form of L. pusillus 

 collected by Watson in "Unionville Vail. June, 1868." To the 

 right of it is an entirely different plant but apparently included 

 under Watson's label. The latter seems to be L. rubens Rydb. 

 On the left hand side of the same sheet is a somewhat smoother 

 plant, collected by Captain Bishop in southern Utah in 1872, 

 and marked L. rubens by Kydberg. Whether the rubens plant 

 under Watson's label really belongs there or should go with 

 Bishop's specimen I do not know. ( >wing to the dubious status 

 of this specimen I shall make no further mention of it at pres- 

 ent. The following specimens from Nevada of L. pusillus have 

 been examined: 



Churchhill county: Wadsworth, Heller pjpp. 

 Esmeralda county: Candelaria, Shockley 2-0. 

 Humboldt county: Unionville valley, Watson 221 in part. 



