ae ae a NO ae 
RYDBERG: Rocky MOUNTAIN FLORA 419 
Legume glabrous. 
Stipe rarely Learns the tube of the Sata ; leaves usually get: in Be; 
oblong to oval, obtuse and mucronate. dispar 
Stipe of ra mature legume usually salle the calyx-teeth ; ain ani as- 
cending ; leaflets narrowly linear to linear-oblong, mostly acute. 
Stipe 3-4 mm. long; leaflets linear or linear-oblon ee stem usually conspicu- 
ously strigose; calyx-teeth half as long as the tu L. tenellus. 
Stipe 5-7 mm. long; leaflets narrowly linear; stem en se or nearly so; 
calyx-teeth usually nearly equaling the tube. ff. stipitatus 
Legume strigose. H1, strigulosus. 
HomaALosus pispar Nutt.; T. & G. Fl. N. Am. 1: 350. 1838. 
Orobus dispar Nutt. Gen. 2: 95. 1818. 
This is much less common and has a more restricted range 
than H. tenellus. The range of H. dispar includes the extreme 
western portion of Nebraska, Wyoming, northern Colorado and 
northeastern Utah, while that of 7. tene//us extends from Sas- 
katchewan to Nebraska, Colorado, Utah, and the Yukon Territory. 
Homalobus stipitatus sp. nov. 
Somewhat cespitose perennial; stems slender, 3-4 dm. high, 
erect, branched, sparingly strigose or glabrate, leafy; leaves 
strongly ascending, 4-6 cm. long; stipules lance-subulate ; leaflets 
9-15, narrowly linear, 1-2 cm. long, I-2.5 mm. wide, glabrous or 
sparingly strigose beneath; peduncles about 1 cm. long ; racemes 
ax, 2-10 cm. long, 5—20-flowered; calyx strigose; tube cam- 
panulate, about 1.5 mm. long ; teeth subulate, about as long; corolla 
ochroleucous, 8-10 mm. long; legume glabrous, stipitate, flat ; 
body oblong, about 1 cm. long, 3 mm. wide, acute, gradually 
tapering into the stipe, which is 5-7 mm. long. 
This species is related to H. tenellus (Pursh) Britton [As¢ra- 
gallus multiforus (Pursh) A. Gray], but is a more slender and more 
glabrate plant, with narrower leaflets and longer stipe. It 
belongs to the prairie region east of the range occupied by H. 
tenellus, 
Norta Dakota: “Upper Missouri’’ [from the data given in 
Nicollet’s report, on the hills somewhere between Fort Pierre and 
Devil's Lake], 1839, Geyer (type in herb. Columbia University) ; 
Valley City, 1897, LZ. L. Perrine. 
Minnesota: Lake Belmont, Otter Tail Co., 1892, & P. 
Sheldon. 
SASKATCHEWAN: 1858, &. Bourgeau 4. 
