365 



species in different genera on the same page. This has been in- 

 dicated by Torrey and Gray, (Fl. N. A. i. 672). The specimen 

 described by Plukenet (Mant. 104), as " Hypericoides ex terra 

 Mariana floribus exiguis luteus " on which Linnaeus based his A. 

 Crux-Andrcce, is preserved in the Sloane Herbarium, (vol. 92, p. 

 85), at the British Museum of Natural History, and x^ Hypericum 

 tnutilinn, while the specimens of Gronovius, on which he based 

 H. mutilmn, are in the general herbarium of the same institution. 

 The plant taken up by Torrey and Gray for A. Crux-AndrccB is 

 A. hypericoides, L. Sp. PI. 788, as evidenced by the Gronovian 

 specimen on which it is based, fortunately also preserved. 



President Coulter, in his paper on the North American Hype- 

 ricaceae (Bot. Gaz., 1886, 80), has maintained that we have two 

 closely related species of .^.y^j/r?^;^, associating specimens from the 

 southern states with the tropical American plant which Linnaeus 

 took up for his A. hypericoides in the second edition of his Spe- 

 cies Plantarum (p. 1108), basing it on specimens sent him by P. 

 Browne from Jamaica, one of which is preserved in his herba- 

 rium. However, whether we have one species or two, the north- 

 ern plant is the original A. hypcjHcoides, and should bear that 

 name. All the specimens in the Columbia College Herbarium, 

 including many from Florida, are readily referable to it, and dif- 

 ferent from the West Indian and Central American species. 



Hypericum Canadense, L., var. minimitm, Choisy in DC. 

 Prodr. i. 550. 



The type of this is preserved in the " Prodromus Herbarium " 

 at Geneva. It is a fragment of a three-styled species with narrow 

 leaves, not satisfactorily referable to H. Canadense, though it 

 may as well be that as anything else, and its origin is unknown. 

 From Choisy's remarks at the place of publication, he apparently 

 thought it was Mexican. In any event it is not at all the North- 

 ern plant with oval or orbicular lower leaves which has been re- 

 fered to it, and which may be called H. Canadense, var. 

 BOREALE. 



Potentilla Canadensis, L. Sp. PI. 498 (i753)- 



Potentilla simplex, Michx. Fl. Bor. Am. i. 303 (1803). 

 P. Canadense, var. simplex, T. and G. Fl. N. A. i. 443 

 (1840). 



