_ ll 
Vou. II.]J PEA FAMILY. 309 
5. Spiesia Lamberti (Pursh) Kuntze. Stemless Loco-weed or Crazy-weed. 
Colorado Loco vetch. (Fig. 2160.) 
Oxylropis Lamberti Pursh, Fl. Am. Sept. 740. 1814. 
Spiesia Lamberti Kuntze, Rev. Gen. Pl. 207. 1891. 
Silky-pubescent with appressed or slightly spreading 
hairs, acaulescent or nearly so, tufted. Stipulesimbricated, 
membranous, pubescent, lanceolate, acute or acuminate, 
4/’-7’’ long; leaves 4-9’ long; leaflets 9-19, linear, oblong 
or sometimes lanceolate, acute or obtusish at the apex, 
mainly rounded at the base, 8’’-12’’ long, 114/’-3/’ wide; 
peduncles longer than the leaves, 67-12’ long; flowers pur- 
ple, yellowish, or purplish, 8’’-15’’ long, in dense heads 
or spikes; pod incompletely 2-celled, coriaceous, sessile, 
erect, ovoid-cylindric, densely pubescent, long-acuminate, 
6//-12’’ long, exceeding the calyx. 
Prairies, Minnesota to the Northwest Territory and British 
Columbia, south to Texas and New Mexico. April-Aug. 
Spiesia Lamberti sericea ( Nutt.) Rydb. Bot. Surv. Neb. 3:32. 1894. 
Oxytropis sericea Nutt.; T. & G. Fl. N. A. 1: 339. 1838. 
More silky; leaflets wider, lanceolate or oblong; flowers 
often yellow. Range nearly of the type. 
Showy Oxytrope. (Fig. 2161.) 
Oxytropis splendens Dougl.; Hook. Fl. Bor. Am. 1:147. 1833. 
Spiesia splendens Kuntze, Rev. Gen. Pl. 207. 1891. 
Densely silvery and silky-villous, acaulescent, tufted. 
Stipules imbricated, membranous, villous-pubescent, lan- 
ceolate, acute, 4/’-6’” long; leaves 4/-9!4’ long, erect; 
leaflets very numerous, in verticils of 3-6, oblong or ob- 
long-lanceolate, acute or acutish at the apex, rounded at 
the base, 6//-10’ long, 2’/-4’’ wide; peduncles exceeding 
the leaves, sometimes 12/ long; flowers deep purple, about 
6’’ long, in dense spikes; pods ovoid, erect, 2-celled or 
nearly so, long-acuminate with a spreading or oblique tip, 
villous-pubescent, little exceeding the calyx, 6’’-9’’ long. 
Prairies, Minnesota and Manitoba to the Northwest Terri- 
tory, south to Colorado and New Mexico. June-Aug. 
wy” i 
7. Spiesia Bélli Britton. (Fig. 2162.) 
Spiesia Belli Britton; J. M. Macoun, Can. Ree. Sci. 
1894: 148. 1894. 
Acaulescent, tufted, loosely villous with white 
hairs. Stipules membranous, ovate or oblong, 
acute or acuminate, imbricated, villous or glabrate, 
5/’-7/’ long; leaves 3/-6’ long; leaflets oblong or 
oblong-lanceolate, subacute at the apex, rounded 
at the base, 3/’-4’’ long, 1//-2’’ wide, in verticils 
of 3 or 4; peduncles about equalling the leaves; in- 
florescence capitate; pod oblong, erect-spreading, 
densely pubescent with black hairs or some longer 
whitish ones intermixed, about 9/’ long and 3/’ 
thick, 2-3 times as long as the black-pubescent ca- 
lyx, very nearly or quite 2-celled by the intrusion of 
the ventral suture, the tip erect; corolla not seen, 
Hudson Bay. Summer. 
