144 UNIVERSITY OF MISSOURI STUDIES [292 



558. F. Americana (Porter) Britton [F. vesca Americana 

 Porter ]. American strawberry. 



At Boulder, 5400 ft. (Rydberg). 



Newfoundland to Manitoba; Virginia to New Mexico 

 and Oregon. 



558^. F. prolifica Baker & Rydb. Prolific strawberry. 

 Boulder Canon, 8500 ft. (Coulter in Wabash College Herb.). 

 Colorado. 



559. F. glauca (S. Wats.) Rydb. Glaucous strawberry. 

 Mountainsides at Eldora, 8600 ft. (Daniels, 850). Redrock 



lake, 1 0100 ft. (Ramaley & Robbins). 



Mackenzie to Montana ; South Dakota to Colorado and 

 Nevada. 



560. F. pauciflora Rydb. Small-flowered strawberry. 

 North Boulder Peak (Rydberg). Boulder Canon, 8500 ft. 



(Coulter in Wabash College Herb.). 

 Hudson Bay to Alberta ; Colorado to Utah. 



225. SLBBALDIA L. 



561. S. proeumbens L. Procumbent sibbaldia. 



Above timberline in dry tundras near the snow, 11 500- 13500 

 ft., Arapahoe Peak (Daniels, 912). Redrock lake, 10100 ft. 

 (Ramaley & Robbins). 



Arctic-alpine around the world. 



226. DASIPHORA Raf. 



562. D. fruticosa (L.) Rydb. [Potentilla fruticosa L.]. 

 Shrubby cinqltefoil. 



Subalpine bogs, mostly in aspen zone ; but also in bogs in 

 the plains and mesas, 5600-10000 ft. (Daniels, 541). 



Labrador to Alaska ; New Jersey to California : Europe : 

 Asia. 



227. DRYMOCALLIS Fourr. 



563. D. arguta (Pursh) Rydb. [Potentilla arguta Pursh]. 

 Tall cincuefoil. 



On the plains and mesas, the flowers yellow as well as white, 



