ALPINES AND ROCK PLANTS 
9 
Pentstemon alpinus—10 in. Crowded spikes of large, intense blue, white' 
throated flowers. Gravelly banks of Colorado Rocky Mts. Hardy. Pkt. 50$. 
P. barrettae—10 in. Silvered evergreen foliage. Spikes of lilac'purple flowers. 
Mts. of Pacific Northwest. Hardy. Pkt. 50$. 
P. bridgesii—18 in. Narrow panicle of long scarlet flowers. High montane on 
rocky outcrops to 8500 ft. Hardy. 
P. caeruleus (P. angustifolius)—8 in. Bushy gray'blue plant. Flowers shading 
from lilac to pure blue. Eastern foothills of northern Rocky Mts. Hardy. 
Pkt. 50$. 
P. cardwellii (P. fructicosus var. cardwellii)— 10 in. Small thick'toothed ever¬ 
green leaves. Short spikes of bright purple flowers. Mts. of Pacific North' 
west. Hardy. Pkt. 50$. 
P. confertus var. caeruleo-purpureus—10 in. Basal leaves forming mat. Close 
whorls of intense purple'blue flowers. High montane to 10,000 ft. Hardy. 
P. confertus var. procerus—16 in. Blue flowers in three to five whorls. Montane 
to 8000 ft. Hardy. 
P. corymbosus—18 in. Evergreen. Dainty sprays of deep salmon'pink flowers. 
Rocky cliffs of the northern Coast Ranges. Hardy. Pkt. 50$. 
P. cyananthus—12 in. Blue'gray foliage. Dense racemes of clear blue flowers. 
Mts. of Pacific Northwest. Hardy. 
P. deustus—8 in. Slender woody growth. Small sharply toothed leaves. Yellow 
flowers with red'brown throat. Montane to 8000 ft. Needs poor soil. 
Hardy. 
P. diffusus—18 in. Erect stems bearing close panicles of violet'purple flowers. 
Alpine meadows of Pacific Northwest mts. Hardy. 
P. diffusus var. albus—18 in. Panicles of white flowers. Habitat of type. Hardy. 
P. fructicosus—Low matted shrub, 10 in. Leathery leaves. Short racemes of 
large flowers like blue'purple snapdragons. Pacific Northwest mts. to 8000 
ft. Hardy. Pkt. 50$. 
P. glaber—18 in. Spikes of wide'throated blue flowers. Montane on dry slopes 
to 8500 ft. Hardy. 
P. glaber, Alpine form—Alpine, 4 in. Basal clusters of thick leaves strongly 
tinged with purple. Enormous brilliant blue flowers. Peaks of central 
Sierra Nevada Mts. to 13,000 ft. Hardy. Pkt. 50$. 
P. glaucus (P. whippleanus)—12 in. Many spikes of full'throated wine'purple 
flowers. Northern Rocky Mts. Hardy. Pkt. 50$. 
P. heterophyllus var. azureus—12 in. Gray foliage. Spikes of intense blue 
flowers. Foothills of northern Sierra Nevada Mts. Hardy. 
P. laetus—Erect or decumbent. 10 in. Loose panicles of deep blue flowers. 
Montane on dry slopes to 8000 ft. Hardy. 
