32 Rydberg: Studies on the Rocky Mountain Flora 



Mertensia 



A 



basal leaves 5-15 cm. long, long-petioled ; blades oblanceolate, 

 obtuse ; stem-leaves subsessile, linear or linear-lanceolate, acute, 

 3-6 cm. long, 4-9 mm. wide, strigose above, glabrous beneath : 

 flower clusters 3-4-flowered in the axils of the upper leaves; 

 pedicels very slender, 2-6 mm. long, strigose: calyx divided to 

 near the base ; lobes linear, acute, 3-4 mm. long, almost equaling 

 the tube of the corolla, glabrous on the back, but hispid ciliate on 

 the margins : corolla blue, 7-8 mm. long, tube nearly of the same 

 length as the throat and limb ; the latter 4-5 mm. long : stamens 

 almost equaling the corolla ; filaments dilated, and broader than 

 the anthers. 



It is nearest related to M. linearis, but characterized by the 

 narrow, strongly ciliate calyx-lobes and the filiform pedicels. It 

 grows in shaded situations at an altitude of 2500—2700 m. 



:st Indian Creek, Trichera Range, 1900, Ryd- 



W 



H.N. 



y 



US- 



Mertensia ovata sp. nov. 





A low cespitose, somewhat fleshy perennial. Stems I— 1*5 

 dm. high, glabrous: leaves 2-5 cm. long, 1 — 1.5 cm. wide, mi- 

 nutely strigose above, glabrous beneath ; the lower obovate and 

 short-petioled ; the upper broadly ovate and sessile : flower-cluster 

 dense ; pedicels very short : calyx cleft to near the base : sepals 

 lanceolate, ciliate on the margin, about 4 mm. long and one third 

 shorter than the corolla-tube: corolla 10-12 mm. long; its tube 

 nearly one half longer than the throat and limb : the latter about 

 7 mm. broad : stamens nearly equaling the corolla ; filaments 

 dilated and broader than the anthers. 



This species is probably nearest related to M. lanceolata ; but 

 differs in the stunted habit and the broad leaves. It grows among 

 rocks, at an altitude of 2800-3500 m. 



Colorado: West Spanish Peak, 1900, Rydberg & Vreeland, 

 5690 (type) and 5690a. 



^Mertensia obtusiloba sp. nov. 



A low cespitose perennial. Stems ascending, glabrous, 1-2 

 dm. high : lower leaves spatulate or oblanceolate, obtuse, tapering 

 into a winged petiole, dark green, glabrous beneath, minutely 

 strigulose above, glabrate in age, 3-5 cm. long; the upper broadly 

 lanceolate, sessile : flower-clusters several from the axils of the 



