STATE GEOLOGIST. 53 



C. subvillosa, Schrader. (C. tomentosa, L., var. mollis, Gray.) Downy 

 Thorn. 

 Blue Earth county (common, becoming a tree twenty feet high), Upliam; New Ulm, 

 Juni; Emmet county, Iowa (rare), Cratty; Pipestone quarry, Mrs, Bennett. [North of 

 lake Superior, Bell, Macoun.j 



C. Crus-galli, L. Cockspur Thorn. 



Winona, Fillmore, Mower, Freeborn and Scott counties, and the Big Woods, 

 Winchell; lake Fepin, ilf iss Manning; Dodge county. Harrington; Rice county, Siyerry; 

 Hennepin county, Simmons; Fish-hook lake, Cass county, and the White Earth 

 reservation. Garrison. [" In Manitoba a thorn which appears to be identical with this 

 species is abundant." Bell.] 



PIRUS (Pyrus), L. Pear. Apple. 



P. coronaria, L. American Crab- Apple. 



Common in the southeast part of the state ; extending west to the Big "Woods, and 

 north to Ramsey and Hennepin counties, Winchell, and to Crow lake in southwestern 

 Stearns county, Upham. The fruit, though bitterish, is frequently used for sauce. 



P. arlbutifolia, L. Choke-berry. 



Frequent from Olmsted county, Harrington, and Faribault, Miss Beane, to Minne- 

 apolis, Roberts, Anoka county, Juni, and the St. Croix river. Parry. East. 



P. arbutifolia, L., var. melanocarpa. Hook. Choke-berry. 



Pine county (common), Upham; north of lake Superior, extending west to Sturgeon 

 lake, Dawson route, Macoun. East. 



P. Americana, DC. American Mountain-Ash. 



Common through the north part of the state ; extending south to northern Pine 

 county, and to Mille Lacs. "A common tree north of lake Superior, attaining consid- 

 erable size. Professor Winchell collected specimens where the trunk was at least 12 

 inches in diameter, and perfectly sound. Others, though unsound, were 15 and 16 

 inches." Roberts. 



P. sanibucifolia, Cham. & Schlecht. Elder-leaved Mountain Ash. 



Common northward; extending south to Itasca lake, Garrison, and T. 137, R. 33, 

 Wadena county, Upham; and rare farther south, as on the bluffs of the Mississippi at 

 Winona, Winchell. 



AMEJLANCHIER, Medic. June-berkt. 



A. Canadensis, Torr. & Gray. (Including the var. Botryapium, Torr. & 

 Gray.) Shad-bush. Service-berry. 

 Common throughout the state. (Usually from 10 to 30 feet high, but northeastward 

 only attaining a hight of 10 feet and diameter of 2!4 inches ; used by the Indians for 

 snow-shoe frames. ClarU.) 



A. Canadensis, Torr, & Gray, var. oblongifolia, Torr. & Gray. 



Service-berry. « 



Common, or frequent, throughout the state. 



A. Canadensis, Torr, & Gray, var. olig'ocarpa, Torr. & Gray. Service- 

 berrj-. 

 Loon portage, Dawson route (near the international boundary), Macoun. North. 



A. alnifolia, Nutt. (A. Canadensis, Torr. & Gray, var. alnifolia, Torr. & Gray.) 

 "Western June-berry. 

 Pembina, Vhickering; White Earth reservation, Garrison; Hennepin county, 

 Roberts; Faribault, Miss Beane; Lake City, Mrs. Ray. Frequent. 



