THE FLORA OF MOUNT RAINIER 



Pyrus sitchensis (Roemer) Piper. 



(Sorbus sitchensis Roemer.) 



This species grows from four to fifteen feet high, and is easily 

 known by its intense scarlet fruit and shining leaflets, which are 

 sharply serrate to the base. The plant of the Cascade Mountains 

 matches exactly with the type from Sitka, and we can detect no 

 differences in the shrub common in the Blue Mountains and in 

 Western Idaho. This shrub has heretofore been known as Pyrus 

 sambucifolia Chamisso & Schlechtendahl, but authentic Kam- 

 tschatka specimens of this last are clearly different from our plant. 



Rosa nutkana Presl. 



This common wild rose has been collected by Allen on the Goat 

 Mountains, at 4,500 feet elevation. 



SAXIFRAGACEAE. (Saxifrage Family.) 



Ribes howellii Greene. 



(Ribes acerifolium Howell.) 



A small currant, two to four feet high, with pendent racemes 

 of flowers and glaucous black fruit. Common in the shelter of 

 trees up to their limit. 



Ribes bracteosum Douglas. 



A currant with very large leaves and long, erect racemes of 

 greenish flowers ; fruit black. It is common along streams at low 

 altitudes, and is locally known as " stink currant." Gorman re- 

 ports it from Cowlitz Canyon, near the timber line. 



Ribes lacustre (Persoon) Poiret. 



This very prickly gooseberry is reported by Gorman from the 

 same locality as the preceding. 



Leptarrhena amplexifolia (Sternberg) Seringe. 



A handsome plant, with a radical tuft of oblong crenate ever- 

 green leaves, and an erect scape of small greenish flowers in a 

 corymb. The pods when mature are usually deeply tinged with 

 purple. Common on the borders of rills at 5,000 feet, and on the 

 wet cliffs near Sluiskin Falls. Also reported by Professor Greene 

 from Spray Park. 



Tiarella unifoliata Hooker. 



Common in rich woods up to 3,500 feet elevation. 



Mitella breweri Watson. 



In the shelter of trees, common at 6,000 feet altitude. 



Mitella pentandra Hooker. 



Much like the preceding and found in similar places. 



Mitella trifida Graham. 



Found on Mount Rainier and on Goat Mountains by Allen. 



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