132 POLEMONIACE^. PMox. 



•t— Leaves moie or less beset or ciliate with cobweb-like or woolly hairs, 

 ++ Very short, broadish or scale-like, soft, barely mucronate, appressed-imbricated : plants very 

 depressed, moss-like, forming pulvinate tufts: lobes of tlie corolla entire. 



P. Richardsonii, Hook. Rather loosely tufted : leaves oblong-lanceolate, 3 lines long, 

 sparsely lanate above, and vrith thickened reflexed margins ; the marcescent older ones lax 

 and spreading : tube of the " brilliant lilac " corolla nearly twice the length of the calyx, 

 the broadly cuneate-obovate lobes 3 lines long. — Hook. Fl. ii. 73, 1. 160.— Arctic sea- 

 coast, Richardson, Pullen. 



P. bryoides, Nutt. Habit somewhat of Selaginella rupestris, copiously lanate : leaves 

 (even the marcescent ones) very densely appressed-imbricated in 4 strict ranks on the loosely 

 tufted branches, scale-like, ovate- or triangular-lanceolate, minute (only H lines long), with 

 rather inflexed margins : tube of the corolla considerably longer than the calyx, its cune- 

 ate lobes barely a line and a half long.— PI. Gamb. 153. — High Rocky Mountains in 

 Wyoming, lat. 42°-45°, Nutlall, Parry. 



P. muscoides, Nutt. Like the preceding, more resembling some canescent moss ; the 

 branches much tufted, very short ; leaves less strictly quadrifarious and less lanate, ovate- 

 lanceolate, mucronulate: tube of the corolla not surpassing the calyx. — Jour. Acad. 

 Philad. vii. 42, t. 6, fig. 2. — Rocky Mountains, at the sources of the Missouri, Wyeth. 

 ++ ++ Leaves subulate or acerose, somewhat rigid, less appressed : plants forming broad mats, 2 to 

 4 inches high. 



P. Hoodii, Richards. Sparsely or loosely lanate, becoming glabrate ; leaves subulate, 

 rather rigid, erect, somewhat loosely imbricated: tube of the (white'?) corolla not exceed- 

 ing the calyx ; its lobes obovate, entire, 2 to 2| lines long. — Prankl. Journ. Appx. t. 28. — 

 Sandy plains and hills of the Saskatchewan, &c., from lat. 54°, and along the Rocky 

 Mountains down to the south-west part of Wyoming. 



P. canescens, Torr. & Gray. More lanate and canescent: leaves subulate, imbri- 

 cated soon recurved-spreading above the appressed base (3 to 5 lines long) ; tube of the 

 white corolla at length exceeding (often about twice the length of) the calyx; the obovate 

 lobes entire or emarginate, 3 or 4 lines long. — Pacif . R. Rep. ii. 8, t. 6 ; Watson, Bot. 

 King, 259. — Rocky Mountains of Wyoming and Colorado to the Sierra Nevada in Califor- 

 nia and New Mexico. Apparently passes into the preceding. 



H- -1- Leaves rigid (one third to half inch long), destitute of woolly or cobwebby hairs, the mar- 

 gins naked or ciliate with rigid or rather soft hairs: plants either densely or loosely tufted; the 

 leaves mostly less crowded. 



P. caespitosa, Nutt. Leaves linear-subulate or oblong-linear, commonly much crowded, 

 hispid-ciliate, otherwise glabrous or with some short glandular-tipped rigid hairs : corolla 

 with tube somewhat exceeding the calyx; its lobes obovate, entire, 3 lines long.— Jour. 

 Acad. Philad. vii. 41, t. 6, fig. 1. — Var. rigida, Gray, in Proc. Am. Acad. 1. c. 254, is a de- 

 pressed form, with acerose-subulate at length recurved-spreading rigid leaves. P. rigida, 

 Benth. in DC — Var. condensata, Gray, 1. c, is a very dwarf, pulvinate-tufted form, with 

 short and erect closely imbricated leaves, only 2 or 3 lines long ; and is P. Hoodii, Gray, 

 Enum. PI. Parry (298) in Am. Jour. Sci. — Rocky Mountains of Colorado, Montana, &c., to 

 Oregon and the high Sierra in California. Laxer narrow-leaved forms pass into the next. 



P. Douglasii, Hook. Less densely tufted, either pubescent or nearly glabrous : leaves 

 acerose or narrowly linear-subulate, less rigid and usually less crowded, often spreading, 

 their margins hirsutely-ciliate next the base or naked : flowers subsessile or short-pedun- 

 cled: corolla (purple, lilac, or white) with tube more or less exceeding the calyx, and 

 obovate entire lobes about 3 lines long. — Hook. Fl. ii. 73, t. 158 ; Gray, Proc. Am. Acad. 

 1. c. — Eastern and western sides of the Rocky Mountains, from Montana to Utah, west to 

 Oregon and the borders of California. Passes into the subjoined forms. 



Var. diffusa, Gray, 1. c, with more loosely spreading or cespitose-decumbent stems, 

 and lax spreading leaves, growing in moister places. — P. diffusa, 'Benili. PI. Hartw. 325. 

 — Western slope of the Sierra Nevada and Cascade Mountains, California to British 

 Columbia. 



Var. longif olia, Gray, 1. c, a rigid form, of more arid regions, and long and narrow 

 less fascicled leaves (linear-filiform or acerose, 5 to 8 lines long, either ascending or spread- 

 ing), approaching P. longifolia. — W. Nebraska to Oregon and N. E. California. 



