124 FLORA OF GRAND RAPIDS. 



*.)"}U. A. hypericifolium Ait. 



Especially i'rcMjuciit on s:in»ly lake hordors. July-Au<x, 



Silver Lake (II, W. llyser); Little IJostwick Lake; Crooked 



Lake; Cani])au Lake; West OiiieiiH Lake. 



VINCA L. 



051. V. Mixoij Ij. Periwinkle. Myrtle. 



Esca])e<l in the vieinity of cemeteries and dwell in£jB, spreading 

 hy roots. May. 



ASCLEPIADACEAE. ^[.i.kwkk.. Family. 

 ACERATES Ell. (Iui:i:\ Mii,k\vkkd. 

 n.->2. A. viridiflora Ell. 



In dry sandy soil; frequent. July. 



Broad leaved forms and narrow leaved forms grow together; 

 the latter have been mistaken for yl. longifoUa, which has only 

 been found on the shores of the Great Lakes. 



ASCLEPIAS L. Milkweet). Sit.kweed. 



953. A. incarnata L. Swainp Milkweed. 

 Common in low ground. .Tuly-Aug. 



954. A. obtusifolia Michx. 



\n dry sandy soil. June-.July, 



Only a few plants at any station, but well distributed. Scarce 



in the State. 



955. A. phytolaccoides Pursh. Poke Milkweed. 

 A, ,y.<ilh,tn (L.) Muhl. 



In moist woods. .Tune. 



Plants scattered, but well distriluited. 



956. A. purpurascens L. Purj)le Milkweed. 



Light soil of woods and thickets; infrequent. Mid-June-.July. 

 Roadside Sec. 31, Vergennes; along Burton Ave.; Mill Creek 

 woods; bluffs of Ilogadone Creek; Soldier's Home woods (O.H.); 

 Quimby's Lumber Yard, CUty (S.O.L.); Market Island, City 

 (M. & C). 



