453 
12, sub-opposite, thick and ¢oriaceous, strongly venulose on both 
surfaces, elliptical or linear-lanceolate, mostly obtuse, 3-6 cm. long, 
% as broad; tendrils short, mostly unbranched; receme shorter 
than the rachis of its leaf; flowers 3-10, clustered, probably pur- 
ple, 1-1.5 cm. long; calyx teeth subequal, acute, shorter than the 
tube. Legume not seen. ‘ 
A well marked species of the interior region, having the rigid 
appearance of L. Jepsoni, but wholly distinct from it. May-June. 
Utah, Wahsatch: Mts., alt. 5,000-7,000 ft. S. Watson (n. 297); 
Oregon, base of Stein’s Mt. Thomas Howell, 1885. 
‘Type (1) in Herb. Col. Coll.; (2) in Herb. U. S. Dept. Agric. 
19. Latuyrus parvirouius S. Wats. Proc. Am. Acad. 17: 345 
(1882). : 
Lathyrus venosus var. obovatus Torr. Pac. R. R. Rep. 4: 77 
(1857), in part. 
Throughout the region west of the Rocky Mountains, from 
Washington to Mexico. 
Original locality: San Miguelito Mts., Mexico, Schaffner (n. 
812); also Parry & Palmer (n. 197). 
Types in Gray Herb. 
20. Latuyrus venosus Muhl,; Wild. Sp. Pl. 3: 1092 (1803). 
Lathyrus decaphyllus Hook. Fl. Bor. Am. 1: 159 (1833), not 
Pursh, 
Lathyrus multifiorus Nutt.; T. & G. Fl. N. A. 1: 274 (1838). 
Orobus venosus A. Braun, Ind. Sem. h. Berol. (185 3). 
Lathyrus ochroleucus Torr. Pac. R. R. Rep. 267 (1858), not of 
Hook, 
Orobus Muhlenbergii Alefeld, Bonplandia, 9: 146 (1861). 
Throughout the eastern half of the United States and Canada. 
Original locality: Pennsylvania. 
*1. LaTHYRUS LONGIPES n. sp. 
Lathyrus venosus Hemsley, Bot. Cent. Amer. 1: 293 (1879- 
1888), not Muhl. | 
Glabrous throughout ; stems weak and slender, terete or quad- 
gular, wingless, not striate; stipules broadly semi-sagittate, acute 
i each end, thin, nearly entire, in length up to half the size of the 
faflets; leaflets mostly three pairs, opposite, broadly elliptical, 
bron». at each end, membranaceous, 2-4 cm. long, %4—-¥% as 
“ae; tendrils long, filiform, branching ; raceme 2—3 times longer 
~ 
