1915] PAYSON—COLORADO PLANTS 377 
forming a rounded clump 5-7 dm. high: leaves numerous, petioles 
of stem leaves about equaling thé longest leaflets; leaflets 6-8, 
rather unequal, oblanceolate, not folded, green and glabrate above, 
sparsely pubescent and somewhat glaucous beneath, 4-6 cm. long, 
8-1omm. broad, obtuse: racemes numerous, terminating the 
branchlets, 2-3 dm. long; bracts deciduous; pedicels about 2 mm. 
long, softly pubescent as is also the calyx: flowers very small (7-8 
mm. long and about 6 mm. deep), crowded and rarely somewhat 
verticillate, light blue with a conspicuous rich brown spot on banner; 
calyx neither spurred nor gibbous, strongly bilabiate, with two 
linear-lanceolate bractlets attached near sinus; upper lip 3 mm. 
long, 2-cleft, lower lip 4 mm. long, entire; banner nearly orbicular 
when spread out, 7 mm. in diameter, shorter than wings, distance 
between apices of banner and wings about 3 mm.; wings broadly 
oblong, exceeding the keel by 2 or 3 mm.; keel strongly curved, 
margins ciliate from middle to near the comparatively blunt, blue- 
purple apex: pods densely villous, 2-3cm. long and 8-9 mm. 
wide; seeds 4 or 5. 
A species with distinctive characteristics and peculiar aspect due to the 
numerous long racemes of very small, “compact,” light blue flowers with the 
conspicuous brown areas on the banners. Collected only at Tabeguache 
Basin on the Uncompahgre Divide, alt. 8000 ft., where it is rather plentiful 
in open aspen groves or on brushy hillsides. Type no. 547, July 20, 1914. 
ONOBRYCHIS SATIVA L.—Escaped from cultivation on upper 
La Sal Creek, Utah; no. 437, June 16, 1914. 
AstrRAGULUS CoLTONI Jones.—Common in Long Park, near 
Naturata among the junipers and pifions; no. 336, May 22, 1914. 
Astragalus naturitensis, n. sp.—Perennial: gray with appressed 
pubescence throughout: stipules large, scarious, ovate to broadly 
lanceolate, free; leaves 5-7.cm. long; petioles 2-3 cm. long; 
leaflets 9-11, narrowly elliptical, more densely pubescent on lower 
side, 6-7 mm. long: inflorescence racemose-capitate in flower, 
elongating somewhat in fruit; peduncles equaling or exceeding the 
leaves, spreading: flowers few (6-10); calyx tubular, about 7 mm. 
long, appressed pubescent and sparsely nigrescent, teeth short 
(1-2 mm.), triangular-subulate; corolla 12-15 mm. long, con- 
spicuously bicolored, standard white, 2mm. longer than keel, 
