5o6 



VITACEAE. 



Vol. II. 



4. / '. hicolor. 



Leaves glabratc, sometimes slightly pubescent when young. 

 Leaves bluish-white glaucous beneath. 

 Leaves not glaucous beneath. 



Leaves 3-7-lobed ; lobes acute or acuminate. 



Lobes and sinuses acute ; berries with bloom. 



Lobes long-acuminate; sinuses rounded; berries without bloom. 

 Leaves sharply dentate, scarcely lobed. 



Bark loose ; pith interrupted by the solid nodes. 

 High-climbing ; leaves large ; berries sour. 

 Low ; leaves small ; berries sweet. 

 Bark close; pith continuous through the nodes. Genus Muscadi.ma Small. 



9. / '. rotundifolia. 



I', vitljyina, 

 r. f'lilinala. 



I '. cordifolia. 

 I '. rupeslris. 



I. Vitis Labrusca L. Northern Fox- or 

 Plum-grape. Wild Vine. Fig. 2830. 



Vilis Labrusca L. Sp. PI. 203. 1753. 



Climbing or trailing, often ascending high 

 trees, sometimes forming a stem a foot in 

 diameter or more, the young twigs, forked 

 tendrils, petioles and lower surfaces of the 

 leaves densely rusty-pubescent, especially when 

 young. Bark loose and separating in strips; 

 nodes solid, interrupting the pith ; leaves 

 large, each opposite a forked tendril or a 

 flower cluster, varying from merely dentate 

 to deeply lobed with rounded sinuses; fertile 

 flowers in compact panicles, the sterile looser; 

 berries few, brownish-purple or yellowish, 

 about 9" in diameter, strongly musky; seeds 

 ,?-6, about 4" long ; raphe narrow. 



Thickets, Vermont to Indiana, New York, Geor- 

 gia and Tennessee. Recorded from Minnesota. 

 The cultivated Isabella, concord and catawba 

 grapes have been derived from this species. 

 Ascends to 2100 ft. in Virginia. May-June. 

 Fruit ripe Aug.-Sept. 



3. Vitis aestivalis ]\Iichx. Summer 

 Grape. Small Grape. Fig. 2831. 



I'itis aestivalis Michx. Fl. Eor. Am. 2 : 230. 1803. 



High climbing, branches terete, the twigs 

 and petioles pubescent ; bark loose and 

 shreddy ; pith interrupted at the nodes. Leaves 

 as large as those of V. Labrusca, dentate, or 

 3-5-lobed, floccose-woolly with whitish or 

 rusty pubescence, especially when young, 

 sometimes becoming nearly glabrous when 

 inature ; tendrils and flower-clusters inter- 

 mittent (wanting opposite each third leaf) ; 

 inflorescence generally long and loose ; ber- 

 ries numerous, about 5" in diameter, black, 

 with a bloom, acid, but edible ; seeds 2-3, 

 about 3" long; raphe narrow. 



In thickets, southern New Hampshire to Flor- 

 ida, west to southern Ontario, Wisconsin, Kansas 

 and Texas. Ascends to 3500 ft. in North Caro- 

 lina. May-June. Fruit ripe Sept. -Oct. 



