VITACEAE. 219 



Family 1. KHAMNACEAE Dumort. Buckthorn Family. 



Ovary free from the disk; fruit a drupe. 1. Shamnus. 



Ovary adnate to the disk at its base; fruit dry. 2. Geanothus. 



1. BHAMNUS L. Buckthorn. 

 1. Bhamnus oathaktioa L. Common Buckthorn. M. p. 612. Dry soil. 

 Escaped from hedges. Spring. 

 Philadelphia— Bartram's Garden (Or.). Delaware — Fernwood, fully 

 naturalized (B. Sm.). Northampton — Easton, Porter (B. C). 

 Camden— Haddonfield (C). Hunterdon— Pittstown (C). 

 New Castle — Near Greenhill Church, Commons; Duponts near the 

 Burned Keg Mill, Brandywine. 



Bhamnus Caroliniana Walt. M. p. 612. Wet soil. Spring. 

 Philadelphia — Bartram's Garden, J. Burk (He.). 

 Delaware— Painters ' Arboretum (Fu.). 



2. CEANOTHUS L. 

 1. Ceanothus Americanus L. New Jersey Tea. M. p. 613. Dry, open 

 woods. Summer. 



Family 2. VITACEAE Lindl. Grape or Vine Family. 



Hypogynous disk present, annular or cup-shaped, lobed or glandular ; leaves 

 not digitately compound. 1. Vitis. 



Hypogynous disk obsolete or wanting; leaves digitately compound, leaflets 

 5-7. 2. Parthenocissus. 



1. VITIS L. Grape. 

 Leaves woolly beneath. . . , 



Pubescence rusty L brWn ; berries large, musky. 1. V. Labrusoa: 



Pubescence at length whitish; berries small, black, not musky. 



2. V. aestivalis. 

 Leaves glabrate, sometimes slightly pubescent when young. 



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



Leaves not glaucous beneath. 



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



Leaves sharply dentate, scarcely lobed. 



High-climbing; leaves large; berries sour. ^ 5. V. cordifolia. 

 Low; leaves small; berries sweet. * 6. V. rupesiris.' 



1. Vitis Labrusoa L. Northern Fox-grape. M. p. 614. Moist thickets. 



Spring. 



2. Vitis aestivalis Michx. Summer Grape. M. p. 614. Thickets. Spring. 



Philadelphia— Byberry, Mart. (B. C), Germantown (Me.), Fairmount 

 Park (Pr.). Bucks— Near Sellersville (Fr.), Narrowsville (Mac), Sole? 

 bury Twp. (Ws.)- Delaware— Glenolden (Ke.), Swarthmore (Pr.),i Val- 

 ley of Darby Creek and near Media (B. Sm.). Chester— (P.). Lancaster 

 — (P.). Berks— Wernersville (Te.). Lehigh— Along base of Blue Moun- 

 tain (Kr.). Northampton— Easton, Porter (B. C). Dauphin— (P.). 



3. Vitis bicomr Le Cohte. • Blue or Winter Grape. M. p. 614. Woods'. 



Summer. 

 Bucks— (P.). Lancaster— (P.). Northampton— (P.). Dauphin — 

 (P.). ' • ■•■ V:! ' 



