438 VITACEAE 



Occasional as an escape on L. I. and in northern N. J.; near 

 the City of New York. 



The reported occurrence of R. caroliniana Walt, in Hudson Co., N. J., is an error based 

 on a misdetermination of a specimen of R. Frangula L. 



2. Ceanothus L. 



1. C. americanus L. In dry open woods: Me. and Ont. to Man., 



Kans., Fla. and Tex. 



Common throughout our area except in the pine-barrens, there 

 wanting; always increasing northward. 



VITACEAE 



Hypogynous disk present, annular or cup-shaped; leaves not 



digitately compound in our species. 1. Vitis. 



Hypogynous disk obsolete or wanting; leaves digitately compound, 



the leaflets 5-7. 2. Parthenocissus. 



i. Vitis [Tourn.] L. 



Leaves woolly beneath. 



Pubescence rusty-brown; berries large, musky. 1. V. Labrusca. 



Pubescence at length whitish; berries small, black, not 



musky. 2. V. aestivalis. 



Leaves glabrous or sometimes slightly pubescent when young. 



Leaves bluish-white, glaucous beneath. 3. V. bicolor. 



Leaves not glaucous beneath. 



Leaves 3-7 lobed; lobes acute or acuminate. 4. V.vulpina. 



Leaves sharply dentate; scarcely lobed. 5. V. cordifolia. 



i. V. Labrusca L. In thickets: N. Eng. to Ind., Ga. and Tenn. 

 Common throughout the region except in the pine-barrens, there 

 wanting; always increasing northward. 



2. V. aestivalis Michx. In thickets: southern N. Eng. to Fla., 



southern Ont., Wise, and La. 



Common throughout the area, less common in the pine-barrens 

 than elsewhere and perhaps there introduced. 



3. V. bicolor LeConte. In woods: N. N. Y. to Mich, and N. 



Car. 



Conn. Colebrook, Litchfield Co. and Southington, Hartford Co. 



N. Y. Spring Valley, Rockland Co. 



N. J. Sussex Co., very rare. 



Pa. Monroe, Northampton and Bucks counties. 



Tertiary, o: Cretaceous, o: Older Formations, scattered indis- 

 criminately on limestone and crystalline rock-soils. 128-159 days. 

 Sea level-1,900 ft. 



