238 



NEBRASKA STATE HORTICULTURAL SOCIETY. 



South America. They do not occur otherwise in the southern hemi- 

 sphere, except under cultivation. 



The species taken up in this paper may be summarily characterized 

 as follows: 



1. Fragaria vesca L., Sp. PI., 494 (1753). — Alpine Straav- 

 BERRY. — Leaflets usually stalkless, one to two inches long, obliquely 



•ovate or oblong, coarsely toothed or serrate on the margin, plaited, the 

 lateral sometimes cleft; flower-stalks, witii silky-appressed hairs; 

 flowers hermaphrodite, one-half to three-fourths of an inch in diame- 

 ter, on a slender scape, which bears a s<uall involucre; fruit borne 

 above the leaves, the receptacle ("berry") small, sweet, smooth, not 

 pitted, bearing the "seeds" superficially. — Native of Europe, Asia, 

 and probably of North America also. 



This sweet strawberry is still somewhat grown in Europe, but its 

 '' berries" are much too small for practical use. 



2. Fragaria collina Ehrh., Beitr., VII, 26 (1792).— Leaflets pli- 

 cate, thin, silky above, hairy below; flowers hermaphrodite; fruit 

 ("berry") erect, bearing superficial "seeds." — Native of northern, 

 central, and southern Europe. 



3. Fragaria americana (Porter) Britton, Bull. Torr. Club, 19, 122 

 (1892). — Plant softly villose; leaves thin, becoming smooth with age, 

 sharply serrate-dentate; flower-stalk slender, with a small involucre; 



