662 VlTACEAE Vitis 



Vines having a tendril or flower cluster opposite each leaf (rarely the tendrils aborting 

 and falling off); fruiting clusters generally with fewer than 15 berries; mature 



berries generally 1 cm or more in diameter 1. V. Labrusca. 



Vines lacking a tendril or flower cluster opposite every third leaf; fruiting clusters 



generally with more than 15 berries; mature berries less than 1 cm in diameter. 



Under surface of the leaves green and rusty pubescent or glaucous and nearly 



glabrous, or with a whitish and cobwebby pubescence which generally becomes 



rusty where the veins converge at the base of the leaf 2. V. aestivalis. 



Under surface of the leaves glabrous or more or less pubescent, but never glaucous 

 or rusty pubescent (although the pubescence in the axils of the veins of the 

 leaf may become more or less rusty) . 

 Leaves without lobes or with two short, lateral ones, which generally form a wide 

 sinus with the terminal lobe. 

 Branchlets more or less angled and permanently densely pubescent; under 

 surface of mature leaves more or less densely pubescent; teeth of margin 

 of blades short, convex, and generally less than 3 mm long, the sides of the 

 teeth which end the two principal lateral veins generally forming an ob- 

 tuse angle 3. V. cinerea. 



Branchlets not conspicuously angled; under surface of the leaves glabrous, or 

 pubescent, generally only along the veins; teeth of margin of blades sharp, 

 generally more than 3 mm long, the sides of the two ending the two prin- 

 cipal lateral veins, generally forming an acute angle 4. V. vulpina. 



Leaves mostly with two lateral lobes, generally acute, and usually forming an 

 acute sinus with the terminal lobe. 

 Branchlets bright red (shade forms sometimes greenish) ; fruit without a 

 bloom; in Indiana found only in the Lower Wabash Valley.. .5. V. palmata. 



Branchlets not red ; fruit with a bloom ; found throughout the state 



6. V. riparia. 



1. Vitis Labrusca L. Fox Grape. Map 1378. This species is apparently 

 restricted to the northwestern and southeastern parts of the state. In the 

 northwestern part it is found in low ground in woods, usually associated 

 with pin and black oaks or in the dunes mostly on the mucky borders of 

 streams and ditches. In the southeastern part it is generally found in the 

 "flats" in woodland or along roadsides. At least in this section of the state 

 it prefers the mediacid soils and is associated with sweet gum, pin oak, 

 and beech. 



The color of the fruit of this species is usually purplish black. The late 

 Wm. Henderson, a grower and collector of medicinal plants, who lived 

 about 11 miles northeast of Greensburg, found in Franklin County a wild 

 plant of this species that bore yellow green fruit.* He sent me seed and a 

 part of the original plant which I now have growing. Seed were planted 

 and seedlings were widely distributed to botanical gardens. The seedlings 

 do not all have green fruit. 



N. E. to Ind., southw. to Ga. and Tenn. 



2. Vitis aestivalis Michx. Summer Grape. Map 1379. Throughout the 

 state. Rare to infrequent in the northern two thirds of the state, becoming 

 frequent to common in the southern part. It is usually found in dry situa- 

 tions in woodland or in the open. 



N. H. to Kans., southw. to Fla. and Tex. 



2a. Vitis aestivalis var. argentifolia (Munson) Fern. (Rhodora 38: 

 428. 1936.) (Vitis bicolor Le Conte.) This variety is generally regarded as 



* Vitis Labrusca f. alba (Prince) Fern. (Rhodora 41: 431. 1939.) 



