POLEMONIACB^;. (POLEMONIUM FAMILY.) 251 



about S-cleft, occasionally all entire, barely mucronate : corolla-lobes shorter 

 than the tube : anthers subsessile in the throat : ovules 4 to 6 in each cell. — 

 Mountains of Colorado, to Utah and Wyoming. 



Var. capitata, Gray. A dwarf form : leaves nearly all entire : thyrsus 

 short and capituliform : filaments as long as the anther. — Alpine region, from 

 the Black Hills of South Dakota to Colorado. 



12. G. congesta, Hook. Stems erect or spreading, 3 to 12 inches high, 

 from a tufted base, bearing single terminal or few and corymbose capituliform 

 cymes : leaves with 3 to 7 mucronate divisions, or some of them entire : lobes of 

 the corolla nearly as long as the tube, which does not exceed the usually 

 aristulate-tipped calyx-lobes : exserted filaments at length as long as the 

 anthers : ovules 2 to i in each cell. — From Wyoming and Colorado to Oregon 

 and California. 



Var. crebrifolia, Gray. Depressed; the tufted stems 2 or 3 inches long, 

 crowded with small entire leaves, and terminated by a single capitate cluster. — 

 Mountains of Colorado and Utah. 



13. Gr. iberidifolia, Benth. Leaves more rigid and the lobes cuspidate- 

 tipped, as also the bracts : capitate cymes corymbose : filaments shorter ■ ovules 

 solitary in each cell. — North Platte, Wyoming, and Nebraska. 



14. G. pumila, Nutt. About a span high : stems loosely woolly, at least 

 when young, leafy : leaves narrowly linear, entire or most of them 2 to i-parted 

 into diverging linear lobes, mucronate : flowers cymulose-glomerate and leafy- 

 bracted : tube of the corolla slender, about twice the length of the aristulate-tipped 

 calyx-lobes : filaments slender, inserted in the sinuses, exserted, shorter than the 

 lobes of the corolla : ovules about 6 in each cell. — From W. Nebraska to W. 

 Texas and west to the Sierra Nevada. 



15. G. polycladon, Torr. About a span high : stems puberulent or 

 sparsely pubescent, diffuse, very few-leaved: leaves pinnatifid or incised ; the lobes 

 short, oblong, abruptly spinulose-mucronate, those subtending the cymose cluster 

 longer than the flowers : flowers cymulose-glomerate and leafy-bracted : tube 

 of the corolla hardly exceeding the aristulate-mucronate calyx-lobes : anthers in 

 the throat, on very short filaments : ovules 2 in each cell. — Bot. Mex. Bound. 

 147. W. Texas to Utah and Nevada. 



•i- -i- Flowers thyrsoid-paniculate, inconspicuously bracted or ebracteate, never yel- 

 low, ovules 6 in each cell. 

 ** Corolla rose-red : anthers subsessile in the throat. 



16. G. Haydeni, Gray. Almost glabrous, slightly glandular above, a 

 span or more high, effusely much branched, somewhat corymbose : radical 

 leaves pinnatifid ; those of the branches linear and subulate, bract-like, entire : 

 calyx-lobes subulate, shorter than the tube : corolla-tube £ inch long, several 

 times longer than the obovate lobes. — Proc. Am. Acad. xii. 79. On the San 

 Juan in S. W. Colorado or adjacent Utah, Brandegee. 



++ *+ Corolla bluish or white: filaments slender and much exserted. 



17. G. Stenothyrsa, Gray. Stem simple, virgate, very leafy up to the 

 racemiform narrow thyrsus : leaves pinnately cleft into short oblong lobes : bracts 

 small and entire: stamens moderately exserted: corolla somewhat fnnnelform, 

 white, nearly J inch long. — Proc. Am. Acad. viii. 276. Uinta Mountains, 

 Fremont. 



