FIGWORT FAMILY 743 



Counties) southward through the Blue Mountains of Oregon, east to Idaho. Type locality: Craig Mountains, 

 Idaho. June-Aug. 



Penstemon attenuatus subsp. palustris (Pennell) Keck, Amer. Midi. Nat. 33: 171. 1945. {Penstetncm 

 palustris Pennell, Notulae xNaturae Xo. 71:8. 1941.) Corolla blue-purple, only 7-10 mm long; calyx-lobes 

 correspondingly short; anther-sacs 0.6-0.7 mm. long. Marshy places in the southern Blue Mountains, Oregon 

 (Baker and Grant Counties). Type locality: John Day River at Prairie City, Oregon. 



16. Penstemon spathulatus Pennell. Wallowa Penstemon. Fig. 4653. 



Penstemon spathulatus Pennell, Notulae Naturae No. 71: 10. 1941. 



Stems slender, 1-2 . 5 dm. high, from an often wide matted base, the basal rosette well 

 developed. Leaves rather firm, the basal narrowly elliptic to oval, obtuse or acute, 2-6 cm. 

 long including slender petiole, 6-18 mm. wide, the cauline oblong-lanceolate; thyrsus moderately 

 glandular-pubescent, of 1-4 rather crowded clusters; calyx 2.5-5 mm. high, the lance-oblong to 

 broadly ovate lobes acuminate, with entire to erosulate narrow or broad scanous margm; 

 corolla violet-blue, marked with guide lines within, 10-13 mm. long, gradually amphate, to 5 mm. 

 wide, the palate moderately bearded; anther-sacs elliptic to ovate, boat-shaped, 0.6-0.8 mm. 

 long'; staminode reaching orifice, sparingly to densely golden bearded at apex. 



Dry gravelly slopes, Hudsonian Zone; Wallowa Mountains, Wallowa County, Oregon. Type locality: Ice 

 Lake, head of Adams Creek, Wallowa Mountains. July-Aug. 



17. Penstemon confertus Dougl. Yellow Penstemon. Fig. 4654. 



Penstemon confertus Dougl. ex Lindl. Bot. Reg. 15: pi. 1260. 1829. 



Stems slender, 2-5 (-7) dm. high, the green herbage essentially glabrous throughout, the basal 

 rosette developed. Leaves thin, the basal lanceolate to oblanceolate, on short slender petioles, 

 3_7 (-10) cm. long, up to 20 mm, wide, the cauline usually narrow, reduced within the in- 

 florescence to broadly scarious-margined and erose bracts ; thyrsus strict, of 2-7 dense clusters ; 

 calyx 3-5 mm. high, the lanceolate to broadly oblong lobes abruptly acuminate or subulate- 

 tipped, very thin, the scarious margin usually much wider than the herbaceous portion and 

 prominently erose; corolla pale sulphur-yellow, 8-12 mm. long, tubular, bilabiate, the palate 

 well bearded with brown hairs; anther-sacs oval, explanate, 0.4-0.5 mm. long; staminode 

 included, with short tuft of brownish hairs at apex, n = 16. 



Meadowy places or forest openings, Arid Transition and Canadian Zones; British Columbia, south through 

 Washington east of the Cascades to northeastern Oregon, east to Alberta and Montana. Type locality: be- 

 tween Salmon River and the Kettle Falls in the Columbia," northeastern Washington. May-Aug. 



18. Penstemon hiimilis Nutt. Lowly Penstemon. Fig. 4655. 



Penstemon humilis Nutt. ex A. Gray, Proc. Amer. Acad. 6: 69. 1862. 

 Penstemon collinus A. Nels. Bull. Torrey Club 25: 279. 1898. 

 Penstemon piiberuhis M. E. Jones, Contr, West. Bot. No. 12: 64. 1908. 



Stems densely cespitose, forming clumps 1-3 dm. high, the herbage cinereous-puberulent 

 below, grayish, the basal rosette well developed. Leaves rather firm, entire, those of the rosette 

 mostly lanceolate, tapering to petiole and apex, 2-5 cm. long, the cauline oblanceolate to oblong 

 below, linear-lanceolate and rounded-amplexicaul above; thyrsus glandular-pubescent, of 3-6 

 more or less confluent few-flowered clusters ; calyx 3-5 mm. high, the lobes broadly lanceolate 

 to broadly ovate, obtuse to short-acuminate; corolla azure-blue to blue-lavender with purplish 

 tube, 12-16 mm. long in ours, nearly tubular, the lower lip longer than the upper ; anther-sacs 

 ovate to rotund, more or less explanate, 0.4-0.6 mm. long; staminode reaching orifice, promi- 

 nently tufted with golden hairs at apex and sparingly bearded for one-third its length. 



Dry, sagebrush- or pirion-covered slopes, Upper Sonoran Zone; rare with us in Wallowa County, Oregon, 

 and in eastern Mono County, California, more abundant eastward and northward to western Colorado and Wyo- 

 ming and central Idaho. Type locality: Rocky Mountains. May-Aug. 



19. Penstemon cinereus Piper. Gray Penstemon. Fig. 4656. 



Penstemon cinereus Piper, Contr. U.S. Nat. Herb. 16: 209. 1913. 



Stems slender, often anthocyanous, forming clumps 1-5 dm. high, the herbage cinereous- 

 puberulent below the inflorescence, gray, the basal rosette well developed. Leaves rather firm, 

 almost always entire (feebly toothed apically in some), those of the rosette lanceolate to 

 narrowly ovate, acute or obtuse, mostly less than 5 cm, long and 8 mm. wide, the cauline 

 abruptly reduced and nearly linear; thyrsus glandular-pubescent, of 3-9 distinct few-flowered 

 clusters, the cymules rather lax and on short divergent or appressed peduncles ; calyx 2-3 mm. 

 high, the lobes ovate, obtuse or acute; corolla bright blue to blue-indigo or blue-purple, 9-13 mm. 

 long, nearly tubular or gradually ampliate; anther-sacs ovate to rotund, boat-shaped or nearly 

 explanate, 0.5-0.6 mm. long; staminode reaching orifice, prominently bearded with short golden 

 hairs for one-third its length, n = 8. 



In volcanic gravels on sagebrush- or juniper-covered slopes, Arid Transition Zone; east of the Cascades 

 from Wasco County, Oregon, south to Mount Shasta, east to northwestern Nevada. Type locality: Bend, 

 Oregon. May-July. 



Penstemon cinereus subsp. foliatus Keck, Amer. Midi. Nat. 33: 188. 1945. Herbage greener; rosette 

 leaves mostly more than 5 cm. long and 8 mm. wide, the cauline only gradually becoming smaller and linear- 

 oblong to oblong-lanceolate; calyx to 4 mm. high; corolla 12-16 mm. long; anther-sacs 0.7-^.8 mm. long; 

 staminode bearded only at apex. In loamy or serpentine soils to the north and east of the typical form, from 

 central Washington to the southern Blue Mountains, Oregon, east to Idaho. Type locality: Dixie Pass, Whit- 

 man National Forest, Grant County, Oregon. 



