410 



VITACEAE. 



[VOL. II. 



Vitis vulpina L,. 



Riverside or Sweet Scented Grape. (Fig. 2402.) 



Vitis vnlpina L. Sp. PI. 203. 1753. 



I'itis riparia Michx. Fl. Bor. Am. a: 231. 1803. 



Vitis cordifolia var. riparia A. Gray, Man. Ed. 

 5, 113. 1867. 



Climbing or trailing, glabrous throughout, 

 or more or less pubescent on the veins of the 

 lower surfaces of the leaves; branches rounded 

 or slightly angled, greenish; pith interrupted, 

 the diaphragm thin; tendrils intermittent. 

 Leaves shining, almost all sharply 3~7-lobed, 

 the sinuses angular, the lobes acute or acum- 

 inate, the terminal one commonly long; stip- 

 ules 2 // ~3 // long, often persistent until the 

 fruit is formed; inflorescence com pact or becom- 

 ing loose; berries bluish-black, with a bloom, 

 4 // -5 // in diameter, rather sweet; seeds 2-4, 

 2" long, the raphe narrow and inconspicuous. 

 Along rocky river-banks, Nova Scotia to Mani- 

 toba, south to Maryland and Arkansas. May- 

 June. Fruit beginning to ripen in July, some- 

 times continuing until October. Leaves light 

 green, thin. 



6. Vitis palmata Vahl. Missouri 

 Grape. (Fig. 2403.) 



I'itis palmata Vahl, Symbol. BoL 3: 42. 1794. 



High-climbing, glabrous or nearly so through- 

 out, or with slight pubescence on the veins of 

 the lower surfaces of the leaves; twigs bright 

 red; bark separating in large flakes; pith inter- 

 rupted, the diaphragms thick; tendrils inter- 

 mittent, forked. Leaves dull, darker green 

 than in I', vulpina, deeply 3-5-lobed, the sinuses 

 rounded, the lobes long-acuminate; stipules 

 ij"-2" long; inflorescence loose; berries 

 black, 4"-5' / in diameter, without bloom; seeds 

 1-2, about 3" long; raphe indistinct. 



River-banks, Illinois and Missouri. Blooming 

 later and ripening its berries after /'. rnlpina. 

 June-July. 



7. Vitis cordifolia Michx. Frost Grape. 

 Chicken Grape. (Fig. 2404.) 



I'itis cordifolia Michx. Fl. Bor. Am. a: 231. 1803. 



High-climbing, the twigs glabrous or slightly 

 pubescent, terete or indistinctly angled; pith in- 

 terrupted by thick diaphragms; internodes long; 

 bark loose; tendrils intermittent; stem some- 

 times 1 in diameter or more. Leaves 3 / -4 / 

 wide, shining above, glabrous or sparingly pubes- 

 cent beneath, thin, sharply and coarsely dentate 

 with very acute teeth, sometimesslightly3-lobed, 

 mostly long-acuminate at the apex; tendrils 

 forked, intermittent; stipules about 2" long; in- 

 florescence loose; berries black, shining, about 3" 

 in diameter, ripening after frost; seeds i or 2, 

 about 2" long; raphe narrow or inconspicuous. 



Moist thickets and along streams, New England 

 to Nebraska, south to Florida and Texas. Called 

 also Possum Grape and Winter Grape. May-June. 

 Fruit ripe Oct.-Nov. 



