250 POLEMOXIACE.E. (POLEMOXICM FAMILY.) 



6. G. Nuttallii, Gray. Cinereous-pubendent 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, nmcronate : corolla white with a yellow more funnelform throat ; ine 

 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. 



■*- +- 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. pUDgens, 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. csespitosa, Gray. A low and dense form, imitating Phlox Doug- 

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



* * Leaves alternate and pinnatehj incised, clef, or divided {rarely entire), 



occasionally some of the lowermost opposite. 



*- Flowers capitate-clustered, leaf jbr acted ; bracts and calyx-lobes acerose-pungent 



or cuspidate. 



*+ Calyx lobes and the mostly multifd bracts rigid and acerose-pungent : leaves, 



at least some of them, more than once pinnatel y-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: flowers 

 densely glomerate: tube of the calyx and base of the bracts strongly villous 

 ivith 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 (l£ lines long) : ovules 1 w 

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

 Dakotas to Colorado and Oregon. 



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

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

 flowers less glomerate : leaves ivith 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. 



++ ** Calyx-lobes and bracts cuspidate but not pungent : leaves simply pinnatifd 



or entire. 



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

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

 elongated virgate and spike-like thyrsus: leaves thickish, almost fl if or m, some 





