462 POLEMONIACEAE polemonium 



branched : leaflets 15-31,- oMang to broadly lanceolate, or some of the 

 lower ones obovate, 4-8 lines long : flowers in cymulose clusters : calyx 

 open-campanulate, 3-3 lines long, cleft to the middle, with short triangu- 

 lar lobes : corolla pale blue or purplish, 4-6 lines long ; its ample rounded 

 lobes much longer than the tube: filaments pilose and dilated at base: 

 ovules 3-4, and seeds 1 or 3 in each cell. On' the highest mountains, Cali- 

 fornia to the Arctic coast and the Rocky Mountains. 



P. pulchellum Bunge in , Ledeb. Fl. Alt. i, 233. Minutely puberulent 

 and viscid-glandular: stems rather slender, sparingly branched, 6-10 

 inches high : leaflets 9-31, oblong to lanceolate : flowers in cymulose clus- 

 ters, mostly slender-pediceled : calyx narrowly campanulate, cleft to below 

 the middle, 2-3 lines long: corolla blue with white tube, 6-8 lines long, the 

 ample oblong lobes much longer than the short tube: filaments pilose but 

 not dilated at base: capsule obovoid, much shorter than the calyx: ovules 

 2-4 and seeds usually 1 in each cell. On high mountains, Oregon to Alaska 

 and the Rocky Mountains. 



* * Tall, from slender rootstocks or roots : leaves and leaflets com- 

 paratively large. 



*' Stems erect, 1-3 feet high: leaflets numerous and mostly approx- 

 imate, not rarely confluent or the rachis winged: ovules 6-13 in each 

 cell. 



P. occidentale Greene Pitt, ii, 75. P. coeruleum of authors as to our 

 plant. Either glabrous or viscid-pubescent : stem strict and virgate, 2-3 

 feet high, from running rootstocks, 5-10-leaved : leaflets 15-23, from lin- 

 ear-lanceolate to oblong-ovate, 5-20 lines long: flowers numerous, in a 

 naked and narrow thyrsus or panicle: calyx cleft to or below the middle, 

 with short lanceolate lobes : corolla blue, an inch or less in diameter, the 

 obovate lobes much longer than the tube: filaments densely bearded at 

 base, often equalling the corolla-lobes : style exserted. In springy places 

 on high mountains, California to Alaska and the R,ocky Mountains. 



P. foliosissimum Gray Syn. Fl. ii, 151. Very viscid-pubescent through- 

 out and strong-scented : stems a foot or more high, very leafy : leaflets 

 from lanceolate to ovate-lanceolate : flowers corymbose-cymose, small : 

 corolla commonly white or cream color, sometimes violet, twice as long 

 as the calyx which is 5-cleft to or beyond the middle: style and stamens 

 not exserted. Idaho to the Rocky Mountains and New Mexico. 



P. pectinatum Greene Bull. Cal. Acad, i, 10. Glabrous or the inflor- 

 escence viscid-pubescent: stems clustered, a foot or more high, slender, 

 leafy to the summit : leaflets linear-filiform, an inch long, in about 5 pairs : 

 flowers corymbose-cymose : calyx cleft to beyond the middle : corolla half- 

 inch broad, white or cream-color: seeds wingless. Collected in eastern 

 Washington by Prof. E. W. Hilgard in June 1883. 



■^ "^ Herbage glabrous or slightly pubescent, neither viscid nor 

 glandular: stems lax, with diffuse branches and open corymbiform or 

 paniculate inflorescence: leaflets fewer and rather large, membranace- 

 ous, only the ultimate at all confluent ; style and stamens rather 

 shorter than the corolla : ovules only 3-4 in each cell. 



P. cameum Gray 1. c. Stems rather stout 1-2 feet high: leaflets 5-15, 

 from ovate to oblong-lanceolate, 6-18 lines long: branches somewhat um- 

 bellately 3-5-flowered : pedicels slender, pubescent : calyx campanulate, 

 6-10 lines long, pubescent ; the lanceolate acute lobes longer than the tube : 

 corolla salmon-color or flesh-color, 13-18 lines broad, the ample rounded 

 obovate lobes thrice longer than the tube: filaments slender, villous at the 

 slightly dilated base : capsule oblong, not longer than the tube of the calyx : 

 seeds 2 or 3 in each cell. In damp places, southwestern Oregon to Calif. 



