Spring Flora of Oklahoma 
105 
I. VITIS (Tourn.) L. 
Climbing woody vines, mostly with tendrils. Leaves 
simple, palmately-veined or lobed. Stipules small, decid¬ 
uous. Flowers mostly dioecious, or polygamo-dioecious, 
rarely perfect. Petals hypogynous or perigynous, often 
united at the apex, in a cap, and not expanding. Sta¬ 
mens inserted between the lobes of the disk. Ovary'usu¬ 
ally 2-celled, 4-ovuled. Fruit juicy 1-4 seeded. 
Leaves woolly beneath; twigs woolly or hairy. 
1. V. cinerea. 
Leaves glabrate, sometimes slightly pubescent when 
young. 
Leaves 3-7-lobed; lobes acute or acuminate. 
2. V. vulpina. 
Leaves sharply dentate, scarcely-lobed. 
Bark loose; pith interrupted by the solid nodes. 
High-climbing; leaves large, berries sour. 
3. V. cordifolia. 
Low; leaves small; berries sweet. 
4. V. rupestris. 
Bark close; pith continuous through the nodes. 
5. V. rotundi folia. 
1. Vitis cinerea Engelm. Downy Grape. Climbing, branches 
angled, young shoots and petioles mostly floccose-pubescent. Bark 
loose. Pith interrupted. Tendrils intermittent. Leaves dentate, or 
somewhat J3-lobed, rather densely floccose-pubescent. Inflorescent 
loose. Berries black, without bloom 3"-4" in diameter. Pleasantly 
acid. 
Common along streams. May-June. 
2. Vitis vulpina L. Sweet-Scented Grape. Climbing or trail¬ 
ing, glabrous throughout. Pith interrupted, the diaphragm thin. 
Tendrils intermittent. Leaves almost all sharply 3-7-lobed, the sin¬ 
uses angular, shining. Inflorescence compact or becoming loose. 
Berries bluish-black, with a bloom, 4"-5" in diameter, rather sweet. 
Along river banks. May-June. Lincoln County. 
3. Vitis cordifolia Michx. Frost Grape. High-climbing,- the 
twigs glabrous or slightly pubescent, terete or indistinctly angled. 
Pith interrupted by thick diaphragms. Internodes long. Tendrils 
intermittent. The stem sometimes 1° in diameter or more. Leaves 
