260 SCROPHULARIACE^. Pentstemon. 



Var. Douglasii, Gray, 1. c., with entire and obovate-lanceolate or narrowly oblong 

 leaves, and (as far as known) lilac-purple corolla, pink-red at base. P. Dour/lasii, Hook. 1. c., 

 in fruit only. P. crassifolius, Lindl. Bot. Reg. xxiv. 1. 16. Interior of Oregon and Wash- 

 ington Terr. Passes into 



Var. Scouleri, Gray, 1. c. Leaves lanceolate, or even linear-lanceolate, acute ; the 

 larger 1 to even 3 inches long, sparsely and acutely serrulate : corolla commonly inch and 

 a half long, violet-purple. P. Scouleri, Dougl. in Lindl. Bot. Reg. t. 1277. Interior of 

 Oregon to Brit. Columbia. A form (var. Lyalli, Gray, 1. c. 70) is 2 feet or more high, with 

 remarkably long willow-like leaves. 



^ * (FRUTicosr.) Anthers glabrous, dehiscent through the apex and explanate after dehiscence : 

 stems branching and shrubby, at least below: leaves coriaceous or chartaceous, small or short, 

 mostly very short-petioled : filaments all bearded or pubescent at base. 



-) Corolla unknown : probably of this section. 



P. microphyllus, Gray. Cinereous-puberulent and glabrate, much branched : pri- 

 mary leaves not seen ; those of axillary fascicles only 2 lines long, obovate, obtuse, entire, 

 thick-coriaceous: inflorescence racemose: sepals lanceolate-ovate, acute: persistent style 

 (and therefore probably the corolla) short. Torr. Pacif. R. Rep. iv. 119. N. W. Ari- 

 zona, on Williams Fork, Bigelow. 



-i H Corolla red, long and narrow-tubular, an inch or more in length; its upper lip erect and 

 the lower more or less spreading: inflorescence somewhat glandular, mostly compound: sterile 

 filament bearded down one side. 



P. COrdifolius, Benth. Somewhat scandent over shrubs by long sarmentose branches, 

 very leafy, scabrous-puberulent : leaves subcordate or ovate with truncate base, acutely 

 serrate or denticulate, veined, an inch or less long : thyrsus short and leafy : peduncles 

 several-flowered: sepals ovate-lanceolate : corolla scarlet ; its tube near an inch and lips 

 half inch long. Scroph. Ind. aduot., & DC. Prodr. x. 329. California, common from 

 Santa Barbara to San Diego. 



P. corymbosus, Benth. Erect, a foot or two high, cinereous-pubescent or glabrate : 

 branches leafy up to the naked and few-many-flowered corymbiform cyme : leaves oblong 

 or oval, barely obtuse at base, obscurely or sparingly denticulate, somewhat parallel- 

 veined (half to 2 inches long): sepals lanceolate: corolla scarlet, an inch long. DC. 

 Prodr. x. 593 ; Gray, Bot. Calif, i. 557. California, from Shasta Co. to Santa Cruz, &c. 



P. ternatus, Torr. Glabrous and the long virgate flowering shoots (2 to 4 feet long) 

 glaucous: leaves linear-lanceolate, rigid, acutely serrate or denticulate with salient teeth 

 (8 to 18 lines long) ; the upper ternately verticillate : flowers in a long racemiform thyrsus : 

 sepals ovate-acuminate : corolla pale scarlet, an inch long and the lips about 3 lines long. 

 Bot. Mex. Bound. 115; Gray, I.e. Mountains of S. California, from Kern Co. south- 

 ward. 



H -I -t- Corolla yellow or yellowish, merely tinged with purple, less than an inch long, with tube 

 shorter than the ringent limb; upper lip fornicate and merely emarginate; the lower pendulous- 

 recurved. 



P. brevifloms, Lindl. Glabrous, 3 to 6 feet high, with slender or virgate branches 

 leafy to the narrow many-flowered racemiform thyrsus : leaves lanceolate or oblong-lanceo- 

 late, denticulate, seldom if ever verticillate, an inch or more long : sepals ovate-lanceolate, 

 acuminate : corolla yellowish with flesh-color, striped within with pink, about half inch 

 long; upper lip beset with long and viscid hairs: sterile filament naked. Bot. Reg. t. 

 1946; Gray, I.e. P. carinatus, Kellogg in Proc. Calif. Acad. i.62. Dry hills and banks, 

 California to the borders of Nevada, common on the flanks of the Sierra Nevada. 



P. antirrhinoides, Benth. Minutely cinereous-puberulent or glabrous, 1 to 5 feet high, 

 much branched, very leafy : leaves small (barely half inch long), spatulate or oval, entire : 

 inflorescence leafy-paniculate : peduncles 1-flowered, short : sepals broadly ovate : corolla 

 ventricose, 8 to 12 lines long, unusually broad, lemon-yellow : sterile filament densely 

 bearded on one side. DC. Prodr. x. 594; Hook. Bot. Mag. t. 6157 ; Gray, 1. c. P. Lobbii, 

 Illustr. Hort. 1862, t. 315. S. California, San Diego Co., &c. 



-1 -I -i ^__ Corolla apparently purplish or flesh-color, not over half inch long, with tube and 

 throat longer than the open lips' : shrubby at base ; the slender branches more herbaceous. 



P. Rothrockii. A span or two high, minutely puberulent, oval- or ovate-oblong, obtuse, 

 mostly subcordate or truncate at subsessile base, usually undulate-dentate, 4 or 5 lines 



