106 
Spring Flora of Oklahoma 
glabrous, or sparingly pubescent on the veins, sharply and coarsely 
dentate with very acute teeth, sometimes slightly 3-lobed. Berries 
black, shining, about 3" in diameter, ripening after frost. 
Moist thickets and along streams. Common. May-June. 
4. Vitis rupestris Scheele. Sand or Sugar Grape. Low, bushy 
or sometimes climbing, glabrous or somewhat floccose-pubescent on 
the younger parts. Pith interrupted. Tendrils forked, intermittent 
or often wanting. Leaves pale green, shining, sharply dentate with 
coarse teeth, or sometimes incised, the sides often folded together. 
Berries black, with a bloom, sweet. 
Sandy banks and hills. April-June. 
5. Vitis rotundifolia Michx. Muscadine. Southern Fox Grape. 
Trailing or high-climbing, glabrous. Tendrils simple, intermittent. 
Bark close. Pith continuous through the nodes. Leaves nearly orb¬ 
icular, dark green, shining, dentate with large, triangular teeth. 
Berries few, purple, 5"-9" in diameter, without bloom, tough, musky. 
In moist, often sandy, soil. May. Payne and MeCurtain counties. 
II. AMPELOPSIS Michx. 
Climbing, woody vines or bushy, with few tendrils and 
firm tissues. Leaves alternate, simple and toothed, or 
lobed, or bi-pinnately compound. Flowers polygamo-dioe- 
cious or polygamo-moncecious. Petals 5, separate, spread¬ 
ing. Floral envelopes mostly in 5’s. Disk cup-shaped. 
Ovary 2-celled. Ovules 2 in each cavity. Berries 2-4 
seeded, the flesh thin, inedible. 
Leaves coarsely serrate, or slightly 3-lobed. 
1. A. cordata. 
Leaves bi-pinnately compound. 2. A. arborea. 
1. Ampelopsis cordata Michx. Simple-leaved Ampelopsis. Glab¬ 
rous, climbing, the branches nearly terete. Tendrils few or none. 
Leaves broadly ovate, coarsely serrate, glabrous on both sides. Pan¬ 
icles small, loose, with 2-3 main branches. Berries bluish, 2"-3" in 
diameter, inedible. 
Swamps and river-banks. May-June. Common. 
2. Ampelopsis arborea (L.) Rusby. Pepper-vine. Glabrous, 
bushy, sometimes climbing. Tendrils often wanting. Leaves bi-pin- 
nate, or the lowest tri-pinnate. Leaflets ovate or rhombic-ovate, 
sharply serrate. Panicles short, cymose. Berries black, depressed- 
globose, about 3" in diameter, inedible. 
In rich moist soil. May-July, Frequent in southern part of 
state. 
