FIGWORT FAMILY 747 



2 5-5 5 mm. high, the lance-oblong to broadly ovate lobes acute to acuminate; corolla bright 

 blue to bluish purple, 13-23 mm. long, 4-8 mm. wide pressed, more or less amphate, the lower 

 lip much exceeding the upper; anther-sacs ovate, more or less explanate, 0.75-1.0 mm. long; 

 staminode slightly exserted, strongly yellow-bearded at apex or for half its length, n = 8, 16. 



Dry coniferous woods, Arid Transition Zone; rare in Washington (Kamiak Butte; Blue Mountains) ; fre- 

 quent in the Wallowa Mountains of Oregon, east to western Montana. Type locality: Kalispell, Montana. 

 May-July. 



25. Penstemon anguineus Eastw. Siskiyou Penstemon. Fig. 4662. 



Penstcmon Rattanii var. minor A. Gray, Proc. Amer. Acad. IS: 51. 1879. 

 Penstemon anguineus Eastw. Bull. Torrey Club 32: 208. 1905. 

 Penstemon minor Keck, Carnegie Inst. Wash. Pub. No. 520: 295. 1940. 



Stems entirely glabrous below, 3-8 dm. high. Leaves glabrous, serrate to finely denticulate 

 or almost entire, the basal oval to ovate, 5-15 cm. long including the petiole, 1-4 cm. wide, 

 the lower cauline oblong, the upper triangular-ovate and cordate-amplexicaul ; thyrsus spar- 

 ingly to copiously glandular-pubescent, variable, of 3-10 dense congested clusters, or more 

 openly paniculate with lower divergent peduncles up to 10 cm. long; calyx 4-7 mm. high, the 

 lanceolate lobes entire; corolla deep lavender to blue-violet, with bright purple tube, 13-18 mm. 

 long, 4-6 mm. wide pressed, rather abruptly ampliate, the short upper lip erect, the longer lower 

 lip spreading, the palate sparingly bearded or glabrous; anther-sacs broadly ovate, nearly ex- 

 planate, 0.8-1.1 mm. long; staminode exserted, sparsely bearded for half its length or glabrous, 

 u = 8. 



In chaparral or openings of coniferous forest on mountainsides or ridges. Transition and Canadian Zones; 

 Crater Lake National Park, Oregon, southwestward to Humboldt and Glenn Counties, California. lype 

 locality: Shelley Creek, Del Norte County, California. June-Aug. 



26. Penstemon Rattanii A. Gray. Rattan's Penstemon. Fig. 4663. 



Penstemon Rattanii A. Gray, Proc. Amer. Acad. IS: 50. 1879. 



Stems often stout, entirely glabrous below, 3-12 dm. high. Leaves glabrous, undulate-serrate 

 to shallowly but acutely dentate, the basal lanceolate to oval, 5-25 cm. long includmg the rather 

 short stout petiole, 1-5 cm. wide, the cauline oblong, sessile, becoming cordate-amplexicaul above ; 

 thyrsus rather densely glandular-pubescent, of 2-7 clusters, foliose below, the lower peduncles 

 divergent, 1-4 cm. long, the cymules rather lax ; calyx 7-9 mm. high, accrescent, the lanceolate 

 entire lobes attenuate or acute, equaling or exceeding the ripe fruit; corolla pale lavender to 

 red-purple or violet-purple, the limb sometimes bluer, 24-30 mm. long, 8-10 mm. wide pressed, 

 shaped like that of P. anguineus, the palate bearded ; anther-sacs broadly ovate, nearly explanate, 

 1.25-1 .4 mm. long; staminode well exserted, moderately long-bearded for half its length, n = 8. 



Scattered colonies on grassy slopes and in woods. Humid Transition Zone; Lane County, Oregon, to 

 Mendocino County, California. Type locality: Humboldt Ridge, Humboldt County, California. May-Aug. 



Penstemon Rattanii subsp. Kleei (Greene) Keck. Carnegie Inst. Wash. Pub. No. 520:295. 1940. (Pen- 

 stemon Kleei Greene, Bull. Torrey Club 10: 127. 1883.) Calyx-lobes ovate^oblong, obtuse. 6-7 mm. long con- 

 siderably exceed.ed by the ripe fruit. Santa Cruz Mountains, California. Type locality: Ben Lomond. Santa 

 Cruz County. 



27. Penstemon seorsus (A. Nels.) Keck. Short-lobed Penstemon. Fig. 4664. 



Penstemon linarioides var. seorsus A. Nels. Bot. Gaz. 54: 147. 1912. 

 Penstemon seorsus Keck, Amer. Midi. Nat. 23:595. 1940. 



Shrubby at base ; stems numerous, erect, slender, 2-3 dm. high, rather densely clothed with 

 opposite leaves, the herbage cinereous-puberulent. Leaves narrowly linear, entire, 2-3 cm. long, 

 1-2 mm. wide, the margin revolute; thyrsus subracemose. glandular-pubescent; calyx-lobes 

 lanceolate to ovate-oblong, acute, narrowly scarious-margined, entire ; corolla essentially tubular, 

 blue-purple, 16-20 mm. long, 4-5 mm. wide, glabrous within, the lobes short; anther-sacs oblong, 

 cymbiform ; staminode exserted, dorsally bearded for its entire length with fine short yellow hairs. 



Dry hills and plains. Arid Transition Zone; Jefferson, Crook, and Harney Counties, Oregon, to south- 

 western Idaho. Type locality: Twilight Gulch, Owyhee County, Idaho. May-June. 



28. Penstemon Gairdneri Hook. Gairdner's Penstemon. Fig. 4665. 



Penstemon Gairdneri Hook. Fl. Bor. Amer. 2: 99. 1838. 



Woody and spreading at base; stems erect, 1-3 dm. high, rather densely clothed with alter- 

 nate leaves, the herbage cinereous-puberulent. Leaves linear, entire, usually recurvmg, 1-3 or 

 4 cm. long, 1-3 mm. wide, the margin revolute; thyrsus strict, glandular-pubescent; calyx-lobes 

 narrowly to broadly lanceolate, 5-8 mm. long, acuminate to attenuate, herbaceous or the margin 

 narrowly scarious below; corolla lavender-purple with deep blue limb, 15-20 mm. long, 4-6 mm. 

 wide at throat, the throat scarcely ampliate, the limb 12-14 mm. across, with more or less 

 reflexed lobes, glandular within; anther-sacs ovate-oblong, cymbiform, the line of contact 

 short; staminode included or barely exserted, dorsally bearded for more than half its length 

 with medium short yellow hairs, n = 8. 



Rocky outcroppings. Arid Transition Zone; Blue Mountains of eastern Oregon. Type locality: ''Blue 

 Mountains of N.W. America, where it was gathered by Mr. Douglas, but communicated to me by Dr. Oairdner. 

 ^Iay-July. 



Penstemon Gairdneri subsp. oreganus (A. Gray) Keck, Amer. Midi Nat. 23:596. 1940. (PrKjtrmon 

 Gairdneri var. oreganus A. Gray, Syn. Fl. N. Amer. ed. 2. 2i:441. 1886. P oreganus Howell Fl. N.W. 

 Amer. 515. 1901.) Leaves appearing to be (but not truly) opposite, 2-7 cm. long, 3-5 mm. wide; corolla 



