764 SCROPHULARIACEAE 



72. Penstemon venustus Dougl. Lovely Penstemon. Fig. 4709. 



Penstemon venustus Dougl. ex Lindl. Bot. Reg. 16: pi. 1309. 1830. 



Subshrub 3-8 dm. high, the herbage glabrous except for lines of puberulence along the 

 stems, often glaucescent. Leaves regularly and finely serrulate or toothed, these teeth often 

 pungent and uncinate, 2-12 cm. long, 3-35 mm. wide, elliptic or oblong to lanceolate, even the 

 basal scarcely petiolate ; thyrsus a continuous spike-like panicle, subsecund, the peduncles erect ; 

 calyx 3-6 mm. high, the lobes lanceolate, ovate, or obovate, with scarious to erose or shallowly 

 toothed margin; corolla light violet to violet-purple, 20-32 mm. long, 8-12 mm. wide pressed, 

 glabrous without and within, the ample lobes ciliate ; anthers somewhat exserted, 1.6-2.1 mm. 

 long, not quite so broad, hirsute ventrally near sinus, the sacs dehiscent one-third to one-half 

 their length, the suture margin rather sparsely spinose ; staminode, together with the fertile 

 filaments, white-hirsute toward tip. n = 32. 



Rocky slopes, Transition and Canadian Zones; Blue and Wallowa Mountains of Washington and Oregon, 

 east to north central Idaho. Type locality: "Found by Mr. Douglas in the dry channels of rivers among the 

 mountains of North-west America." June-Sept. 



73. Penstemon Richardsonii Dougl. Cut-leaved Penstemon. Fig. 4710. 



Penstemon Richardsonii Dougl. ex Lindl. Bot. Reg. 13: pi. 1121. 1827. 

 Penstemon Pickettii St. John, Proc. Biol. See. Wash. 44: iZ. 1931. 



Subshrub 2-8 dm. high, the herbage almost glabrous to densely canescent, the inflorescence 

 glandular-pubescent. Leaves coarsely but acutely serrate to pinnately parted, the lobes again 

 parted or toothed, narrowly lanceolate to narrowly ovate. 2-8 cm. long, 8-20 mm. wide ; thyrsus 

 racemose to openly much branched, the peduncles usually divergent; calyx 4-9 mm. high, the 

 lobes lanceolate to broadly ovate ; corolla pink to rose-lilac or bluish, the guide lines prominent, 

 18-30 mm. long, 7-12 mm. wide pressed, the lower lip sometimes sparsely bearded within; 

 anthers somewhat exserted, broader than long, 1.3-1.8 mm. long, glabrous, the sacs dehiscent 

 one-third to one-half their length, the suture margin sparsely to densely spinulose; staminode 

 sparsely to densely yellow-bearded, usually well-exserted. n = 8. 



Cliffs and rock slides. Humid and Arid Transition Zones; eastern and central Washington and adjacent 

 British Columbia to central Oregon east of the Cascades, and through the Cojumbia Gap to the lower Willam- 

 ette River. Type locality: "on bare dry rocks, in the vicinity of the Columbia and its branches." June-Aug. 



74. Penstemon triphyllus Dougl. Whorled Penstemon. Fig. 4711. 



Penstemon triphyllus Dougl. ex Lindl. Bot. Reg. 15: pi. 1245. 1829. 



Subshrub 3-8 dm. high, the herbage more or less puberulent below the glandular-pubescent 

 inflorescence. Leaves in 3's, subverticillate, subentire to sharply pinnately toothed or cleft, 

 linear to narrowly lanceolate, 2-5 cm. long, 1-6 mm. wide ; thyrsus rather open, often elongated ; 

 calyx 4-6 mm. high, the lobes lanceolate to ovate ; corolla pale lavender to lilac-blue, the guide 

 lines prominent, 13-17 mm. long, 3.5-5 mm. wide pressed, the throat gradually ampliate from 

 a long tube, the lower lip sometimes sparsely bearded within; anthers as broad as long, 0.9-1.3 

 mm. long, glabrous, the sacs dehiscent about one-third their length, the suture margin sparsely 

 spinulose ; staminode densely bearded with fine yellow hairs, n = 8. 



Basalt cliffs, Upper Sonoran Zone; Snake River and its tributaries, eastern Washington and Oregon, to 

 western Idaho. Type locality: "Blue Mountains of North-west America." May-June. 



75. Penstemon glandulosus Dougl. Glandular Penstemon. Fig. 4712. 



Penstemon glandulosus Dougl. ex Lindl. Bot. Reg. 15: pi. 1262. 1829. 

 Penstemon staticifolius Lindl. Bot. Reg. 21: pi. 1770. 1836. 



Stout-stemmed herb 5-10 dm. high, glandular-pubescent throughout with short soft hairs, 

 the inflorescence more viscid. Leaves thin, soft, sharply serrulate or serrate, the basal lanceolate 

 to elliptic, with petiole half as long, together 5-25 cm. long, 1 . 5-6 cm. wide, the upper cauline 

 lance-ovate to cordate, amplexicaul, very gradually reduced within the inflorescence of 2-5 

 remote congested clusters; calyx 10-15 mm. high, the lobes lanceolate, acute to attenuate; 

 corolla pale lilac to light violet, 28-40 mm. long, 11-15 mm. wide pressed, usually glabrous 

 within; anthers suborbicular in outline, broader than long, 1.7-2.2 mm. long, muriculate, the 

 sues dehiscent about one-half their length, the few teeth along the suture prominent ; staminode 

 glabrous. 



Grassy hillsides. Arid Transition Zone; at isolated localities along the Columbia and Snake River canyons, 

 southern Washington, northern and eastern Oregon, and western Idaho. Type locality: indefinite, but collected 

 by Douglas. May-July. 



Penstemon glandulosa subsp. chelanensis Keck. All the leaves entire or very nearly so; otherwise like 

 the typical species. On hillsides, Arid Transition Zone; region about Wenatchee, Chelan County, Washington, 

 May. 



Foliis integerrimis. 



Type collected along Colockum Creek, 4 miles from mouth, Chelan County, Washington, May 2, 1946, 

 G. H. Ward 315 (State College of Washington). 



76. Penstemon Bridgesii A. Gray. Bridges' Penstemon. Fig. 4713. 



Penstemon Bridgesii A. Gray, Proc. Amer. Acad. 7: 379. 1868. 



Subshrub 3-10 dm. high, the herbage yellow-green, seldom glaucous, glabrous or pruinose- 

 puberulent below the moderately glandular-pubescent inflorescence. Leaves 2-8 cm. long, 2-12 

 mm. wide, the basal linear-oblanceolate to spatulate, obtuse, petiolate, the upper cauline linear 



