38 TWELFTH ANNUAL REPORT. 



VITACE.E. ViiNE Family. 



VITIS, Tourn. Grape. 



V. Labrusoa. L. Northern Fox-Grape. 



Occurs frequently, according to Clark, in the east part of the state, as far north- 

 ward as southern Pine countj', and rarely on the St. Louis river ; lake Pepiii, Miss 

 Manninrj. 



Y. ivstivalis, ]\Iichx. Saramer Grape. 



Lapham. St. Croix Falls, Miss Firid-^ AaoK^ county, J uiii; BigStonelake, WinchcU; 

 Fergus Falls, Leonard. Infrequent. South. 



V. cordifolia, Michx.* AVinter or Frost Grape. 



Frequent in the south half of the state ; also in the lied river valley, near Emerson, 

 Manitoba, Dawson. 



V. riparia, Miclix.f (V. cordifolia. Michx., var. riparia, Gray.) Vv'jnter or 

 Frost Grape. 

 Common throughout the state, excepting north of lake Superior. 



AMPELOPSIS, Michx. Virginian Creeper. 



A. qiiiuqiiefolia, Michx. Virginian Creeper. Five-leaf Ivy. Aniencan 

 Ivy. "Woodbine."' 

 Common through the south half of the state and in tiie Red river valley ; probably 

 less frequent northeastward. "A very desirable climber, often cultivated " 



RHAMNACE^. Buckthorn Family. 



RHAMXUS, Tourn. BucivThorn. 



R. aliiifolia, L'Her. Alder-leaved Buckthorn. 



St. Croix river, Pacrj/; Minneapolis, WincheU, K assube; bench oi lake Superior, 

 Juni; lake of the Woods, Dawson. Kara southward ; common far northward. 



*ViTis CORDIFOLIA. Mlchx. Tall (or more rarely low), climbing high, trunks not 

 rarely G to 9 inches iu diameter ; leaves middle-sized or small (2»2 to 3 or 4 inches in 

 diameter), heart-shaped, mostly entire or very slightly tri-lobed on the edges, with 

 broad, shallow teeth, usually smooth anil shining, more on the upper than on the lower 

 side, the young ones sometimes, and very rarely the old ones, with shoit hair on the 

 ribs below ; berries f^mall, in large, mostly loose bunches, black, without a bloom, 

 maturing late in the fall, usually only with a single short and thick seed, marked by a 



prominent raphe. This grows more especially in fertile soil, and is common in river 



and creek bottoms. Engelmann, in Si.vtUAn. Rep., Insects of Missouri; also in Bulletin 

 of the Torrey Botanical Club. 



I ViTis RIPARIA, Mich.x. Mostly a smaller plant than the last, but with larger (3 to 

 5 inches in diameter) and more or less ineisely 3-lobed, glabrous, shining (or rarely 

 when young, slightly hairy) leaves, tlie lobes long and pointed, the teeth also more 

 pointed than in V. cordifolia ; berries usually larger than in the last, mostly with a 

 bloom, in smaller and often more compact bunches, commonly l-to 2-seeded ; seeds 

 with a less prominent raphe. — — This species prefers thickets or rocky soil on river- 

 banks ; the nortliern form has fewer and larijer berries in a bunch, and is easily distin- 

 guished from V. cordifolia. The fruit ripens earlier than the former and is pleasanter. 

 Enyelmann, in Insects o/ Mo., and in Bull. Torr. CI. 



