THE FLORA OF MOUNT RAINIER 



Pentstemon conf ertus Douglas. 



A species with entire leaves and dense clusters of small pale 

 yellow flowers. In its typical form the species is one to two 

 feet tall, but on Mount Rainier, where it occurs at from 7,000 to 

 8,000 feet elevation, it is reduced to two to four inches high, but 

 otherwise not differing from the type. 



Pentstemon procerus Douglas. 



Like the above, but blue flowered. It occurs at 8,000 feet and 

 on Rainier is scarcely two inches tall, while at lower altitudes it 

 is frequently as many feet high. This dwarf Alpine form has 

 been described by Professor Greene as a new species under the 

 name of Pentstemon pulchellus. It is an interesting fact that 

 Tolmie long ago collected on Mount Rainier a dwarf species which 

 Hooker named Pentstemon tolmiei. But alas, the specimens are 

 in fruit, and it is past finding out now whether his plant was the 

 yellow-flowered or the blue-flowered form. Most likely, however, 

 it was the latter, as that is far more frequent than the yellow- 

 flowered form. 



Pentstemon diffusus Douglas. 



A handsome species with serrate leaves and blue-purple flowers. 

 Mount Rainier, Piper 2068. Goat Mountains, Allen 129. 



Pentstemon ovatus Douglas. 



Much like the preceding plant, differing essentially in the 

 anthers. Collected by Allen " mountains near the upper valley 

 of the Nisqually," and by the writer on the slopes of Mount 

 Rainier. 



Pentstemon menziesii Hooker. 



A dwarf prostrate plant with thickish evergreen toothed leaves 

 and dull purple flowers, abundant on the rocks at 8,000 feet 

 elevation. A variety with the leaves entire instead of denticu- 

 late, P. davidsonii Greene, also occurs on the mountain. 



Pentstemon rupicola (Piper) Howell. 



Much like the preceding, but with glaucous leaves and rose- 

 colored larger flowers. The writer found it originally on the 

 perpendicular cliffs, at the limit of trees above " Camp of the 

 Clouds." 



Collinsia tenella (Pursh) Piper. 



Collected by Flett on an old moraine along the Carbon Glacier. 



Mimulus lewisii Pursh. 



Abundant along rills, 4,000 to 5,000 feet altitude. Easily 

 known by its opposite dentate leaves, viscid pubescence and rose- 

 purple corollas. The original specimens were collected in Idaho 

 by the Lewis and Clark expedition. 



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