746 SCROPHULARIACEAE 



20. Penstemon elegantulus Pennell. Lonely Penstemon. Fig. 4657. 



Penstemon elegantulus Pennell, Notulae Naturae No. 71: 14. 1941. 



Stems slender few to numerous from a compact crown, forming clumps 2-3 dm. high, the 

 herbage finely puberulent or the leaves glabrate beneath, the basal rosette well developed 

 Leaves rather firm, sparingly serrate-denticulate, the basal narrowly elliptic-ovate, acute, 3-7 

 cm long 6-13 mm wide, the cauline narrowly linear-lanceolate; thyrsus lightly glandular- 

 pubescent of 3-5 distinct few-flowered clusters, the somewhat lax cymules on short erect 

 peduncles'- calyx 3.5-4.5 mm. high, the elliptic-oblong to broadly ovate lobes acuminate, the 

 moderately scarious margin erosulate; corolla violet-blue(?), 15-21 mm. long, 4.5-6.5 mrn. 

 wide pressed, gradually ampliate; anther-sacs ovate, boat-shaped, 0.75-1.2 mm. long; staminode 

 bearded at tip with short golden yellow hairs. 



Arid Transition Zone. "Cattle Camp at head of Horse Creek, Wallowa County, Oregon, alt. 5400 ft., 

 collected in flower June 24, 1897, by E. P. Sheldon, no. 8387." Known only from this, the type collection, aad 

 from Joseph, Idaho. 



21. Penstemon ovatus Dougl. Broad-leaved Penstemon. Fig. 4658. 



Penstemon ovatus Dougl. ex Hook. Bot. Mag. 56: pi. 2903. 1829. 



Stems several, hirtellous or glabrous below, 5-10 dm. high. Leaves bright green, glabrous 

 to sparingly hirtellous, sharply serrate-dentate (rarely subentire), the basal broadly lanceolate 

 to ovate, abruptly contracted to the short petiole, 5-15 cm. long, 1.5-4 cm. wide, the cauline 

 triangular-ovate; thyrsus glandular-pubescent, of 4-10 rather loose clusters, the lower on 

 divergent peduncles, the cymules simple or compound ; calyx 2-5 mm. high, the lobes lanceolate 

 to ovate; corolla deep blue or blue-purple, 15-22 mm. long, to 7 mm. wide, obviously ampliate 

 and bilabiate, the lower lip exceeding the upper, the palate villous or rarely glabrous ; anther- 

 sacs broadly ovate, nearly explanate, 1 mm. long; staminode slightly exserted, prominently 

 bearded for one-third its length or rarely glabrous, n = 8. 



Damp rockv openings in the woods, Humid Transition and Canadian Zones; southern British Columbia, 

 west of the Cas'cadean crest, to Multnomah County, Oregon. Type locality: "High mountains about the Grand 

 Rapids of the Columbia River." May-July. 



22. Penstemon pruinosus Dougl. Chelan Penstemon. Fig. 4659. 



Penstemon pruinosus Dougl. ex Lindl. Bot. Reg. IS: pi. 1280. 1829. 

 Penstemon amabilis G. N. Jones, Research Stud. St. Coll. Wash. 2: 126. 1930. 



Stems clustered, l-3(-6) dm. tall, the herbage variably viscid-puberulent throughout, 

 sometimes rather densely cinereous below. Leaves serrate-denticulate, the basal lanceolate to 

 ovate, 5-10 cm. long including the long slender petiole, 7-20 (-35) mm. wide, the cauline oblong 

 to lance-ovate; thvrsus prominently glandular-pubescent, of Z-7 rather loose many-flowered 

 clusters, the peduncles strict ; calyx 3-5 mm. high, the lanceolate to oblong lobes acuminate or 

 acute; corolla deep blue-purple, 10-16 mm. long, 2-A mm. wide pressed, the lower lip larger 

 than the upper, the palate feebly bearded or glabrous ; anther-sacs ovate to rotund, boat-shaped or 

 nearly explanate, 0.5-0.7 mm. long; staminode reaching orifice, bearing a tuft of short yellow 

 hairs at apex, n = 8. 



Sagebrush land or pine-covered slopes, Arid Transition and Canadian Zones; southern British Columbia 

 to central Washington, east of the summit of the Cascades. Type locality: "Near the Priests rapid of the 

 Columbia." May-July. 



23. Penstemon subserratus Pennell. Subserrate Penstemon. Fig. 4660. 



Penstemon subserratus Pennell, Notulae Naturae No. 71: 13. 1941. 



Stems clustered, 3-8 dm. high, the herbage light green, below the inflorescence glabrous or 

 finely puberulent or sparingly glandular-pubescent. Leaves quite entire to sparingly and remotely 

 serrate-denticulate, the basal elliptic, tapering to base and apex, 5-20 cm. long including the long 

 slender petiole, 1-3 cm. wide, the cauline linear-oblong to deltoid-lanceolate ; thyrsus glandular- 

 pubescent, of 3-10 rather loose and remote clusters, the peduncles usually appressed; calyx 3-5 

 mm. high, the oblong to lance-ovate lobes acute or acuminate ; corolla with deep blue limb and 

 purple-blue throat, 11-1 5 (-18) mm. long, 3-5 mm. wide pressed, the lips subequal ; anther-sacs 

 narrowly to broadly ovate, boat-shaped, denticulate-ciliolate, 0.8-1.1 mm. long; staminode reach- 

 ing orifice, prominently golden-bearded at apex or sometimes for one-third its length, n = 16. 



Dry open coniferous woods, Transition and Canadian Zones; cast flank of the Cascade Range, from 

 Yakima County, Washington, to Mount Hood, Oregon. Type locality: "Gotchen Creek Ranger Station, 

 Columbia National Forest, Yakima County, Washington." June-July. 



24. Penstemon Wilcoxii Rydb. Wilcox's Penstemon. Fig. 4661. 



Penstemon Wilcoxii Rydb. Bull. Torrey Club 28: 28. 1901. 



Penstemon ovatus var. pinetorum Piper in Piper & Beattie, Fl. Palouse Region 158. 1901. 



Penstemon pinetorum Piper, Contr. U.S. Nat. Herb. 11: 500. 1906. 



Penstemon leptophyllus Rydb. Fl. Rocky Mts. 773, 1066. 1917. 



Stems mostly glabrous or obscurely puberulent below, 4-10 dm. high. Leaves pale to bright 

 green, often thickish, usually glabrous, sometimes hirtellous beneath, sharply serrate-denticulate 

 to subentire, the basal lanceolate to ovate, 4-20 cm. long including petiole, up to 5 cm. wide, 

 the cauline lanceolate to broadly ovate; thyrsus lightly glandular-pubescent, of several con- 

 tracted clusters, or more openly paniculate, with the ultimate cymules loosely decompound ; calyx 



