38 TWELFTH AXNUAL REPORT. 



VITACE.E. Vine Family. 



VITIS, Tourr. Gkape. 



Y. Labriisoa. L. Northern Fox-Gr\ipa. 



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

 ward as southera Fine couaty, and rarely on the St. Louis river ; lake Pepin, MUs 

 Manning. 



v. aestivalis, Micbx. Sammer Grape. 



Lapham. St. Oroix Falls, Miss Fithl-^ Anokacounty, .Jinir BigStonelake, WinclicU; 

 Fergus Falls, Leonard. Infrequent. .South. 



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



Frequent in the south Iialf of the state ; also in the Red river valley, near Emerson, 

 Manitoba, Dawson. 



V. riparia, Micl x.f (V. cordifolia, Miclix., var. riparin, Graj-.) Winter or 

 Frost Grape. 

 Common throughout the state, excepting noith of lake Superior. 



AMPELOPSIS, Michx. Virginian Crebper. 



A. <iiiin<iiiefolia, Michx. Virginian Creeptr. Five-leaf Ivy. Amenc.in 

 Ivy. "Woodbine."' 

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

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



RHAMNACEJ^]. Buckthorn Family. 



RHAMNUS, Tourn. Buckthorn. 



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



St. Croix river, 7'anj/; Minneapolis, ^Vin(■hcll, Kass^ihe; hea,ch oi lake Superior, 

 Jnni; lake of the Woods, Dawson. Rare southward ; common far northward. 



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

 rarely 6 to 9 inches in 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 and 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 small, 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 nnre especially in fertile soil, and is common in river 



and creek bottoms. Emjelmann, in Sixth An. Rep., Inserts of Missouri-^ also in Bulletin 

 of the Torrey Botanical Cluh. 



tViTis RiPARiA. Michx. Mostly a smaller plant than the last, but with larger (3 to 

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

 when young, slightly hairy) leaves, the 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. Tlie fruit ripens earlier than tlie former and is pleasanter. 

 Enijelmann, in Insects 0/ Mo., and in Bull. Tnrr. (l. 



