212 American Midland Naturalist Monograph No. 4 



4. RoCKViNE Penstemon (Penstemon ellipticus Coult. &: Fish.). — 

 Prostrate woody-based plants about 6 inches high, often forming dense mats 

 2 feet across; leaves thickish, egg-shaped to roundish; flowering branches cov- 

 ered with short, sticky-glandular hairs; flowers about 1^2 inches long, purple 

 or violet; sterile filament not bearded; anthers woolly. 



Occurrence. — glacier, common, 6,000 to 8,000 feet: Hanging Gardens near Logan 

 Pass; Skyline trail to Granite Park; above Lake Ellen Wilson; Sp>erry Glacier trail; 

 trail to Swiftcurrent Peak; Iceberg Lake; above Ptarmigan Lake; Brown's Pass. 



5. Davidson Penstemon (Penstemon Davidsoni Greene). — Prostrate 

 woody-based plant often forming broad dense mats; leaves thickish, reverse- 

 egg-shaped to almost round, ^ to ^ inch long, smooth, not toothed; flowers 

 lilac-purple, 1 to 1^/2 inches long, 1 to 5, borne along short flowering stems; 

 sterile filament bearded at the tip; anthers woolly. (Syn. P. Menziesi Hook, 

 var. Davidsoni Piper) . 



Occurrence. — OLYMPIC, common, 5,000 to 6,000 feet: Queets Divide; Martins Park. 

 MOUNT RAINIER: near Mowich Lake. CRATER LAKE, common on the upper slopes and 

 ledges: around the crater rim; Garlield Peak trail; Union Peak. LASSEN: Cinder 

 Cone. YOSEMITE, timberline to 12,500 feet: Mount Conness ; ridge southeast of Eliza- 

 beth Lake. KINGS CANYON: Mount Brewer; Harrison Pass trail. SEQUOIA, above tim- 

 berline: Little Five Lakes; Mount Kaweah. 



6. Newberry Penstemon, Mountain Pride {Penstemon Newberryi 



Gray). — Low, somewhat shrubby plant, % to ly2 feet high; leaves thickish, 



narrowly elliptic to almost round, ^ to 1^4 inches long, covered with a whitish 



bloom, finely toothed or not toothed; flowers bright red, 1 to II/4 inches long, 



borne in unbranched clusters at the ends of the branches; sterile filament 



bearded; anthers densely woolly. (Syn. P. Menziesi Hook. var. Newberryi 



Gray). 



Occurrence. — LASSEN : Cinder Cone, 7,200 feet. YOSEMITE. KINGS CANYON : Harri- 

 son Pass trail. SEQUOIA. 



7. Cliff Penstemon {Penstemon rupicola Howell) . — Low spreading 



woody-based plant about 6 inches high; leaves thickish, elliptic to roundish, 



about I/2 inch long, smooth, covered with a whitish bloom, mostly toothed; 



flowers red; sterile filament bearded; anthers woolly; occurs on rocky ledges 



and ridges. 



Occurrence. — MOUNT RAINIER. CRATER LAKE: Garfield Peak trail; Llao Rock; 

 ridge west of Pumice Flat. 



8. Scouler Penstemon {Penstemon Scouleri Dough). — Low shrub 

 9 to 20 inches high; leaves lance-shaped to narrowly reverse-lance-shaped, % 

 to I1/4 inches long, toothed; flowers lilac-purple, 1 to 1 1/2 inches long; anthers 

 woolly; sterile filament not bearded. (Syn. P. Menziesi Hook. var. Scouleri 

 Gray) . 



Occurrence. — YELLOWSTONE, reported. 



9. Bridges Penstemon {Penstemon Bridgesi Gray). — Somewhat shrub- 

 by plant, 1 to 2i/2 feet high; leaves linear to spatula-shaped, 1^/2 to 3 inches 



