POLEMONIACE.E. (POLEMONIUM FAMILY.) 251 



about 3-cle/l, occasionally all entire, barely mucronate : corolla-lobes shorter 

 tban 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 Dakota to Colorado. 



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

 from a tufted base, bearing single terminal or Jew 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 4 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. G. 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 4-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 : floAvers 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. 



- H- Flowers thyrsoid-paniculate, inconspicuously bracted or ebracteate, never yel- 

 low, ovules 6 in each cell. 

 w- 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. 



+ -M. 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 funnelform, 

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

 Fremont. 



