Genus i. 



GRAPE FAMILY, 



3. Vitis cinerea Engelm. Fig. 2832. 



Vitis aestivalis var. caiicscciis Engelm. Am. 



Nat. 2: 321, name only. iS68. 

 Vitis aestivalis var. cinerea Engelm. ; A. 



Gray, Man. Ed. 5, 679. 1867. 

 F. cinerea Engelm. Bushb. Cat. Ed. 3, 17. 



1883. 



Climbing, branches angled, young shoots 

 and petioles mostly floccose-pubescent ; 

 bark loose ; pith interrupted ; tendrils 

 intermittent. Leaves dentate, or some- 

 what 3-lobed, often longer than wide, 

 rather densely floccose-pubescent with 

 whitish, persistent hairs on the lower 

 surface, especially along the veins, spar- 

 ingly so on the upper; inflorescence 

 loose ; berries black, without bloom, 

 3"-4" in diameter, pleasantly acid, 1-2- 

 seeded; seeds about 2" long, the raphe 

 narrow. 



Illinois to Nebraska. Kansas, Louisiana 

 and Texas. May-June. Downy or ashy 

 grape. 



4. Vitis bicolor LeConte. Blue or Winter 

 Grape. Fig. 2833. 



]'itis bicolor LeConte. Proc. Phil. Acad. 6 : 272. 1852. 

 I'itis aestivalis var. bicolor LeConte ; Wats. & Coult. 

 in A. Gray, Man. Ed. 6, 113. 1890. 



High-climbing or long-trailing, the tendrils in- 

 termittent, the branches terete. Twigs and leaves 

 glabrous, or somewhat pubescent, bluish-glau- 

 cous, especially the lower surfaces of the leaves, 

 the bloom sometimes disappearing by the time 

 the fruit ripens; internodes long, the pith inter- 

 rupted at the nodes ; leaves usually 3-lobed, cor- 

 date at the base, sometimes 12' long, the sinuses 

 rounded, the lobes acute or acuminate ; inflores- 

 cence compact ; berries bluish-black with a bloom, 

 sour, about 4" in diameter ; seeds about 2" long, 

 raphe narrow. 



New Hampshire to Michigan, North Carolina, 

 Tennessee and Missouri. May-June. 



5. Vitis vulpina L. Riverside or Sweet 

 Scented Grape. Fig. 2834. 



Vitis vulpina L. Sp. PI. 203. 1753. 

 Vitis riparia Michx. Fl. Bor. Am. 2 : 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 

 thin, shining, almost all sharply 3-7-lobed, the 

 sinuses angular, the lobes acute or acuminate, 

 the terminal one commonly long; stipules 2"-^,' 

 long, often persistent until the fruit is formed ; 

 inflorescence compact or becoming loose; ber- 

 ries bluish-black, with a bloom. 4"-5" '" diam- 

 eter, rather sweet; seeds 2-4, 2" long, the raphe 

 narrow and inconspicuous. 



Along rocky river-banks. New Brunswick to Mani- 

 toba, south to Maryland, West Virginia, Arkansas 

 and Colorado. May-June. Fruit beginning to ripen 

 in Julv or earlier, sometimes continuing until Octo- 

 ber. Winter-, frost-, bull- or Aroyo-grape. 



