758 SCROPHULARIACEAE 



margin entire to erose ; corolla carmine, 18-24 mm. long, 4-6 mm. wide pressed, nearly tubular, 

 the lobes rotately spreading or reflexed, glandular-pubescent without and densely glandular 

 about orifice; anthers peltately explanate, glabrous; staminode uncinate at apex, glabrous or 

 with vestiges of a papillose beard at apex. 



Occasional in canyons and on mesas, Lower Sonoran Zone; ranges of the eastern Mojave Desert, Cali- 

 fornia, to southern Nevada and Utah and northern Arizona. Type locality: between Hatch's Wash and Monti- 

 cello, Utah. April-May. 



56. Penstemon confusus subsp. patens (M. E. Jones) Keck. Owens Valley 



Penstemon. Fig. 4693. 



Penstemon confusus var. patens M. E. Jones, Contr. West. Bot. No. 12: 63. 1908. 

 Penstemon confusus subsp. patens Keck, Amer. Midi. Nat. 18: 827. 1937. 



Closely resembling P. utahensis in general habit, but the stems often lower and more leafy, 

 and in this subspecies the thyrsus more open and often decompound ; corolla rose-lavender or 

 purplish, 14-20 mm. long, 5-6.5 mm. wide, slightly ampliate, glabrous without and within; 

 anther-sacs not explanate, scabrid-ciliolate at suture ; staminode uncinate, rather densely papillose- 

 bearded at apex, n = 8. 



Arid sandy slopes, Upper Sonoran Zone; hills surrounding Owens Valley, Mono and Inyo Counties, Cali- 

 fornia.; Type locality: Lone Pine. May-June. 



57. Penstemon Eatonii A. Gray. Eaton's Firecracker. Fig. 4694. 



Penstemon Eatonii A. Gray, Proc. Amer. Acad. 8: 395. 1872. 



Stems few to several, glabrous, virgate, 3-10 dm. high. Leaves coriaceous, green or glau- 

 cescent, glabrous, the basal oblanceolate, tapering to a long petiolate base, the whole up to 18 

 cm. long but usually shorter, the cauline lance-oblong with a clasping base, 4-10 cm. long, 1-3 

 cm. wide ; thyrsus strict, secund, half the height of the plant, glabrous ; calyx 4-6 mm. high, 

 the lobes elliptic to broadly ovate, acute to abruptly short-acuminate, the narrow scarious 

 margin entire ; corolla scarlet, 25-30 mm. long, 6-8 mm. wide pressed, nearly tubular, obscurely 

 2-Hpped, glabrous ; anther-sacs parallel or divergent, opening by slits from their free tips for one- 

 half to two-thirds their length, minutely puberulent, the suture finely toothed; staminode glab- 

 rous or more or less bearded, n = 8. 



Occasional in canyons, Upper Sonoran Zone; ranges of the eastern and southern Mojave Desert, Cali- 

 fornia, north and east to Nevada and Utah. 'l>pe locality; Provo Canyon, Wasatch Mountains, Utah. March- 

 July. 



Penstemon Eatonii subsp undosus (M. E. Jones) Keck, Journ. Wash. Acad. 29: 491. 1939. (.Penstemon 

 Eatonii var. undosus M. E. Jones, Proc. Calif. Acad. IL 5: 715. 1895; P. Munsii I. M. Johnston, Bull, 

 Torrey Club 49: 40. 1922.) Marked by having puberulent sterr.s and leaves and the anthers often slightly 

 exserted. With the species in California, where it is the more abundant form, east to Arizona and southern 

 Utah. Type locality: St. George, Utah. 



58. Penstemon labrosus (A. Gray) Hook. f. San Gabriel Penstemon. Fig. 4695. 



Penstemon barbatus var. labrosus A. Gray, Bot. Calif. 1: 622. 1876. 

 Penstemon labrosus Hook. f. Bot. Mag. 110: pi. 6738. 1884. 



Herbage glabrous throughout, green or somewhat glaucescent; stems single or few, erect, 

 virgate, 3-7 drti. high. Leaves coriaceous, the basal linear-oblanceolate, obtuse, short-petiolate, 

 5-10 cm. long, 5-7 mm. wide, the cauline linear, rapidly becoming smaller up the stem ; thyrsus 

 strict, hardly secund; calyx 4-5.5 mm. high, the lobes ovate, acuminate (or acute), the scarious 

 margin erose to entire ; corolla scarlet, 32-40 mm. long, 5-6 mm. wide pressed, tubular, the 

 limb about three-eighths the length of the corolla, the upper lip erect, its lobes only one-fourth 

 its length, the lower lip divided to base with strongly reflexed linear divisions, glabrous ; anther- 

 sacs opposite, opening by slits from their free tips for two-thirds their length, glabrous, the 

 suture minutely denticulate ; staminode glabrous, w = 8. 



Wooded slopes and grassy opens, Transition Zone; mountains of southern California, to Sierra San Pedro 

 Martir, Lower California. Type locality: Mount Pinos. July-Aug. 



59. Penstemon gracilentus A. Gray. Slender Penstemon. Fig. 4696. 



Penstemon gracilentus A. Gray, Pacif. R. Rep. 6': 82. 1857. 



Stems numerous from a compact crown, 2-7 dm. high, the bright green or sometimes glau- 

 cescent herbage glabrous below the moderately glandular-pubescent inflorescence. Leaves entire, 

 thin, mostly basal, the basal oblanceolate, on short slender petioles, 3-10 cm. long, 10-18 mm. 

 wide, the cauline linear-lanceolate; thyrsus a compact panicle of about 3-5 nodes; calyx 3.5-5 

 mm. high, the lobes lanceolate to oblong-ovate; corolla purplish blue to red-purple, 13-16 mm. 

 long, 4-5 mm. wide pressed, slightly ampliate, moderately 2-lipped, the projecting lower lip 

 villous within ; anther-sacs black-purple, glabrous except for the minute teeth along the suture, 

 about 1 mm. long, dehiscent for less than half their length ; staminode yellow-bearded for 

 4-5 mm. n ^ 8. 



Rather dry soils, open coniferous woods, Canadian and Hudsonian Zones; southern Lake County, Oregon, 

 through the mountains to Lake Tahoe, California, and adjacent Nevada. Type locality: "At the base of Las- 

 sen's butte, N. California." June— Aug. 



60. Penstemon papillatus J. T. Howell. Inyo Penstemon. Fig, 4697. 



Penstemon papillatus J. T. Howell, Leaflets West. Bot. 2: 119. 1938. 



Stems few, erect, 2-4 dm. high, the gray-green herbage moderately cinereous-puberulent up 



