250 POLEMONIACE^E. (POLEMONIUM FAMILY.) 



6. G. Nuttallii, Gray. Cinereous-puberulent or the leaves glabrate, more 

 or less woody at base : stems or branches a span to a foot high, terminated by 

 a dense leafy cluster of flowers : leaves 3 to 7 parted : the divisions narrowly 

 linear, mucronate : corolla white with a yellow more f unnelform throat ; ike 

 tube not longer than the calyx: ovules a pair in each cell. Proc. Am. Acad. 

 viii. 267. Mountains of Colorado and Utah to Arizona and the Sierras of 

 California. 



- -i- Leaves all alternate and much fascicled in the axils: Jlowers showy, solitary 

 or few in a cluster at the summit of the branches. 



7. G. pUD gens, Benth. Stems woody, tufted, very leafy : branches and 

 mostly erectish or little spreading leaves viscid-pubescent, puberulent, or 

 glabrate : leaves 3 to 7-parted, acerose or subulate, rigid and pungent : corolla 

 rose or white: ovules 8 or 10 in each cell. From the Upper Platte and 

 Columbia to Arizona and California. 



Var. C8BSpitOsa, Gray. A low and dense form, imitating Phlox Doug- 

 lasii in growth. Proc. Am. Acad. viii. 267. Scott's Bluffs, Wyoming. 



# * Leaves alternate and pinnately incised, cleft, or divided (rarely entire), 



occasionally some of the lowermost opposite. 

 t- Flowers capitate-clustered, leafybracted; bracts and calyx-lobes acerose-pungent 



or cuspidate. 



- Calyx lobes and the mostly multijid bracts rigid and acerose-pungent : leaves, 

 at least some of them, more than once pinnately-parted. 



8. G. intertexta, Steud. Erect or widely branched, low and rather stout, 

 neither viscid nor glandular : stem retrorsely pubescent : leaves mainly glabrous, 

 with divaricate acerose-spinescent divisions sparingly divided or simple: Jlowers 

 densely -glomerate: tube of the calyx and base of the bracts strongly ciilous 

 with white spreading hairs ; its lobes equalling the white corolla (3 or 4 lines 

 long) : ovules and seeds 3 or 4 in each cell. From the Rocky Mountains west- 

 ward to California and Oregon. 



9. G. minima, Gray. Depressed, often forming broad tufts, ^ to 2 inches 

 high, glabrate : leaves acicular and with simpler and fewer divisions than the 

 preceding : tube of the calyx white-hairy in the broad sinuses, as long as the un- 

 equal lobes, which equal or exceed the white corolla (1 lines long) : ovules 1 to 

 3 in each cell. Proc. Am. Acad. viii. 269. In very dry regions from Dakota 

 to Colorado and Oregon. 



10. G. BreWGri, Gray. Erect or at length much branched and diffusely 

 spreading, an inch to a span high, very minutely glandular-puberulent all over: 

 Jlowers less glomerate : leaves with mostly simple acicular-subulate divisions : calyx- 

 lobes similar to these, narrowly subulate, about equalling the yellow corolla 

 (3 or 4 lines long), 3 or 4 times the length of the tube : ovules 1 or 2 in each 

 cell Proc. Am. Acad. viii. 269. From Wyoming to Utah, Nevada, and 

 California. 



w- -w. Calyx-lobes and bracts cuspidate but not pungent : leaves simply pinnatijid 



or entire. 



11. G. spicata, Nutt. Stems rather stout, erect, simple, or several from 

 the fusiform root, a span or two high : capitate flower-dusters crowded in an 

 elongated virgate and spike-like thyrsus: leaves thickish, almost filiform, some 



