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. 



55Sy2. F. prolifica Baker & Rydb. Prolific strawberry. 

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

 Colorado. 



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

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



lake, loioo ft. (Ramaley & Robbins). 



Mackenzie to Montana ; South Dakota to Colorado and 

 Nevada. 



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

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



(Coulter in Wabash College Herb.). 

 Hudson Bay to Alberta; Colorado to Utah. 



225. SIBBALDIA L. 



561. S. procumbens L. Procumbent sibbaldia. 



Above timberline in dry tundras near the snow, 11500-13500 

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

 (Ramaley & Robbins). 



Arctic-alpine around the world. 



226. DASIPHOEA Raf. 



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

 Shrubby cinquefoil. 



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 cinquefoil. 



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



