RYDBERG: Rocky MOUNTAIN FLORA 635 
wide below, about 2 mm. at the throat ; lobes oblong-spatulate, 
acutish ; capsule about 5 mm. long, acute. 
This has been mistaken for G. Haydeni, but that species is a 
much more slender plant with shorter calyx, scarcely scarious- 
‘margined lobes, minute subulate stem-leaves and shorter (3.5 mm. 
long) obtuse capsule. It is more closely related to G. subnuda, 
but differs in the branched stems and the finer and sparser pube- 
scence. It grows in dry soil, especially on ‘‘sage-plains,” at an 
altitude of Ig00—2100 m. 
Cotorapo: Durango, 1898, Crandall 2053 (type) and 20¢0 ; 
also 1896, Tweedy 448 ; Mancos, 1898, Baker, Earle & Tracy 
404; also 1901, Vreeland 885. 
¥ Polemonium robustum sp. nov. 
Perennial with a woody caudex; stem 4-10 dm. high, more> 
or less short-villous and above glandular ; leaves 6-10 cm. long, 
glandular-pubescent ; leaflets 11=17, lanceolate or lance-oblong, 
acute, 1.5-2.5 cm. long; the upper confluent and decurrent on the 
rachis ; inflorescence much branched and corymbiform, but the main 
axis usually overtopping the branches; calyx glandular-villous, 
7-8 mm. long; lobes lanceolate; corolla rose or purplish, 12-15 
mm. high; lobes rounded and obtuse. 
This species is a close relative to P. foliosissimum, but differs 
in the large flowers and the more conical or obovoid inflorescence. 
It grows in the mountains of Colorado, especially along streams, 
at an altitude of 2400—3000 m. 
Cotorapo: Bob Creek, La Plata Mountains, 1898, Baker, 
Earle & Tracy 274 (type); Keblar Pass, 1901, Baker 796; Clear 
Creek Cafion, 1885, Patterson rog; Sangre de Cristo Creek, 
1900, Rydberg & Vreeland 5718; Veta Pass, 1900, Rydberg & 
Vreeland 5717. 
» Polemonium Grayanum sp. nov. 
Perennial with a cespitose rootstock ; stems about 1 dm. high, 
glandular-villous ; leaves 3-5 cm. long, glandular-villous ; leaflets 
at least of the basal leaves more or less verticillate, obovate or 
Spatulate/ 2-6 mm. long, obtuse ; calyx about 18 mm. long, villous 
with white hairs; lobes linear-lanceolate ; corolla about 2 cm. 
long, campanulate-funnelform with a wide tube ; lobes rounded. 
This species is nearest related to P. vzscosum Nutt., but is char- 
acterized by the long white hairs on the calyx. It grows on the 
