[From the Bulletin of ihk Torrey Hi i-anicai Ci.ub, 31 : 631-655. December, 1904.] 



Studies on the Rocky Mountain flora — XIII 



Per Axf.i. Rydberg 



Dodecatheon multiflorum sp. nov. 



Plant glabrous, perennial with a very short caudex and cluster 

 of fibrous roots ; leaves about 2 dm. long, sinuate-denticulate, ob- 

 tusish, narrowly oblanceolate, tapering below into a short petiole ; 

 scape stout 3-4 dm. high ; bracts linear-lanceolate, 1-2 cm. long ; 

 flowers 10-20; the longer pedicels often over I dm. long; calyx- 

 tube 5-6 mm. long, more or less turbinate at the base ; lobes 

 lanceolate, about 5 mm. long ; corolla bluish violet, paler in the 

 throat but without any markings ; lobes oblong, obtuse ; filament- 

 tube obsolete ; anthers narrowly linear-lanceolate, acute, 7-8 mm. 

 long ; connective narrow, lance-subulate, with a longitudinal 

 groove, but not rugose; capsule about 12 mm. long, cylindric- 

 ovoid, septicidal. 



In habit this species resembles D. radicatum and D.pauciflorum, 

 but differs in the stamens, which are almost without a filament- 

 tube. In river valleys at an altitude of 2400-2700 m. 



Colorado : Sangre de Cristo Creek, 1900, Rydberg & Vreeland 



57Si. 



Wyoming : Elk Mountains, 1 899, Little & Stanton. 



Dodecatheon radicatum sinuatum var. nov. 



Leaves more elongated than in the type, oblong, rarely elliptic, 



sinuate, thin. 



Colorado : Foothills, Larimer County, 1890, Crandall (type) ; 

 Buena Vista, 1892, C. S. Sheldon; Fort Collins, 1896, Baker. 



Gentianella Clementis sp. nov. 



Annual, usually more or less branched, 2-4 dm. high ; stem 

 sharply angled ; internodes usually longer than the leaves ; these 

 3-6 cm. long, the basal ones spatulate, the cauline ones lanceolate, 

 acuminate, truncate or even subcordate at the base, sessile ; pedun- 

 cles 1-4 from the axils of the leaves, more or less elongated 1-6 

 cm. long ; sepals linear, acute, usually very unequal in length, the 

 longer often ^ as long as the blue or greenish-yellow corolla ; 

 corolla 15-18 mm. long; lobes ovate-lanceolate, acute. 



631 



