222 
especially remarked by the collectors, and these are also shown 
by Mr. Bicknell’s plants from Riverdale. 
FRAGARIA AMERICANA (Porter). 
F. vesca, var. 6, Torr. and Gray, Fl. N. A. i. 148 (1838). 
F. vesca, var. Americana, Porter, Bull. Torr. Club, xvit. 15 
(1890). 
The characters of this plant have been well indicated by Prof. 
Porter. It differs from the European F. vesca in its thin, deeply 
and sharply dentate leaflets, which become glabrate in age, and 
superficial achenes which are scarcely or not at all imbedded in 
the ovoid fruit. I have seen no form of the European 
plant which very closely resembles it. It is an Appalachian and. 
northern species, extending west to Michigan and south to Vir- 
ginia, probably further both to the south and west. The in- | 
troduced / vesca, which occurs rather sparingly in the Eastern 
States, may usually be distinguished from F. Virginiana bya 
character not alluded to in recent text-books, but mentioned by 
Dr. Sturtevant in Mem. Torr. Club i. 183, 184; this is that in F. 
vesca the fruit is borne above the leaves, while in / Virgimtana 
the leaves rise above the fruit. : 
Fragaria Virginiana, Mill. Gard. Dict. Ed. 8, No. 2 (1768). 
Miller is the author of the species rather than Duchesne, t0 — 
whom it is usually ascribed, the date of Duchesne’s publication — 
in the sccond volume of Lamarck’s Encyclopedia being 17 80; 
Miller’s type is preserved in the Herbarium of the British Museum 
of Natural History. 
Fragaria Canadensis, Michx. F]. Bor. Am. i. 299 (1803): 
This plant, referred by recent authors to / Virginiana, — 
appears to me to be a distinct species. It is a slender plant, the — 
hairs on the flowering scape appressed as in F. Virgintiana, but 
the leaflets are much narrower, oblong or the middle one obovate 
and cuneate at the base, all obtuse, rather sparingly and not 
deeply toothed, averaging not more than 3 cm. long and 1.5 ¢™ — 
wide, quite glabrous on the upper surface even when young, pale 
and more or less appressed, pubescent beneath ; the flowers ar 
few, about 1.5 cm., broad and slender pedicelled. I have 10 
seen the fruit. , 
