RvDBEKG : 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. Hajdeiii, 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. sttbiuida, 

 but differs in the branched stems and the finer and sparser pube- 

 scence. It growls in dry soil, especially on "sage-plains," at an 

 altitude of 1900-2 100 m. 



Colorado: Durango, 1898, Craiidall 20S3 (type) and 20^0; 

 also 1896, Tzveedy 4-4-8 ; Mancos, 1898, Baker, Earlc &- Tracy 

 404; also 1 90 1, VreelaiidSSj. 



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 /'. foliosissivinm, but differs 

 in the large flowers and the more conical or obovoid inflorescence. 

 It grows in the mountains of Colorado, especiall}' along streams, 

 at an altitude of 2400-3000 m. 



Colorado: Bob Creek, La Plata Mountains, 1898, Baker, 

 Earlc & Tracy 2J4 (type) ; Keblar Pass, 1901, Baker jg6 ; Clear 

 Creek Caiion, 1 885, Patterson 104; Sangre de Cristo Creek, 

 1900, Rydlnfg & Vreeland SJiS ; Veta Pass, 1900, Rydbcrg & 

 Vrecla)id jjij. 



Polemonium Grayanum sp. nov. 



Perennial with a cespitose rootstock ; stems about i 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. viscostiin Nutt., but is char- 

 acterized by the long white hairs on the calyx. It grows on the 



