320 GEOLOGICAL SUBVIT OF CANADA. 



(lJt'72.) A. purpurascens, Linn. Pm-ple Milkweed. 

 Maiden, and islands in Deti-oit River. (Maclagcm.') 



Excluded Species. 



Asclepias obtusifolia, Michx. 



A. variegata, Linn. 



I have no authentic record of the discovery of these species and in 

 the absence of specimens, am totally unable to know what species 

 they represent. The latter was said to have been found at Hamil- 

 ton, Ont., by the late Judge Logie. 



392. ACERATES, Ell. (GREEN MILKWEED.) 



(1473.) A. vtrldiflora, EIL 



Asclepias viridiflora, Eaf. Hook. FL n., 53. 

 On d)-y or gravelly soil from Niagara Falls westward to the Eocky 

 itountains. Head of Iiake Erie. {Goldie.) About Fort Carlton. 

 {Richardson.') On the sand hills near Old Wives Lakes. (JLfacoim.) 

 Wood End, Souris Eiver, 49tli parallel. (JDawson^ 



Yar. lanceolata, Gray. 



Asclepia-i viridiflora, Eaf. Var. lanceolata. Hook. Fl. XL., 53. 



On the sand beaches of Point Pelee, Lake Erie ; also in numerous 

 places in Manitoba and Xorth-west Territories. (Jfat'oi/n.) On a sand 

 beach at Point Edward, foot of Lake Hui-on. (J. JI. JIacoun.') Banks 

 of the Eed Eiver. (^Douglas.') About Fort Carlton. {Richardson.') 



Var. linearis, Gray. 



This variety has linear leaves and low stems ; umbels often solitary. 

 Winnipeg Valley. {Gray.) Banks of the Assiniboine Eiver ; Pine 

 Creek on sand dunes ; and on sand hills at the confluence of the 

 Qu'Appelle and Assiniboine rivers. {2Iacoun.) 



LXIV. GENTIANACE^E. Genti.vn Familt. 



393. SABBATIA, Adns. (AMERICAN CENTAURY.) 



(1474.) S. angularis, Pm-sh. 



Eich soil, western Ontario. {Gray.) This species as a Canadian 

 plant is unknown to me. 



