10 



Series 2. Occidentales, Mini son. 



Plant : first year generally erect ; Vitis Arizonica shrubby or climbing 

 moderately ; V. Girdiana and V. Calif ornica climbing vigorously ; grow- 

 ing tips very little enveloped in expanding leaves. 



Roots: one-year seedlings axial; in V. Arizonica tapering, slender, 

 less wiry than in Series lj resistant; in V. Girdiana and V. Calif or idea 

 softer and less resistant. 



Wood: annual scarcely angled, or cylindrical, tomentose; diaphragm 

 medium, slightly bi-concave ; tendrils bifid or trifid, intermittent; buds 

 small to medium, whitish tomentose ia expanding. 



Leaves: stipules medium to small, long cordate; blade small to 

 medium, broadly (in V. Calif ornica) or narrowly cordate, silky tomen- 

 tose or glabrous in part of V. Arizonica; basal sinus rounded or acute ; 

 blade generally plane, in V. Arizonica margin curving toward lower 

 face. 



Cluster: small to medium, mostly compact, more open and larger in 

 V. Girdiana; peduncle slender, of medium length; pedicels slender, 

 thickest in V. Californica. 



Berries : small, black, with thin prunose bloom in V. Arizonica and 

 V. Girdiana, abundant in V. Californica ; pure, vinous, sweet, very per- 

 sistent. 



Germination, foliation, inflorescence and ripening of fruit, medium to 



late; growth from cuttings easy; leaves very sensitive to mildew, and 



fruit subject to black-rot; V. Arizonica withstanding zero temperature; 



V. Girdiana and V. Californica enduring but little cold — the tender est 



of all our species ; native in sandy soils along streams. 



f 5. Vitis Arizonica, Engelmann, var. glabra, Munson, western 



Texas, New Mexico, Arizona, and Chihuahua, Mexico. 



o r\ nn zA™+»T» a J 6 - J 7 *^* Girdiana. Munson, all California south of Mojave Desert, 



Z. Occidentales <j rare north of fchat 



I 7. Vitis Californica, Bentham, central and northern California, 

 I and southern Oregon on Rogue River. 



Series 3. Coriaceae, Munson. 



Plant: first year spindling, reclining, with age climbing medium to 

 very high ; tips of growing shoots not enveloped in the slowly enlarg- 

 ing, quickly unfolding young leaves. 



Eoots : one-year seedlings non-axial and enlarging downward a foot 

 or more from the collar (except in V. Champini somewhat axial and ta- 

 pering downward); transversely wrinkled. 



Wood : young, densely whitish or rusty tomentose (in V. Champini 

 tomentum thin); annual, generally cylindrical; tomentum persistent 

 through first year ; diaphragm bi-concave; buds small to medium, sub- 

 globose, or conical in V. coriacea ; tendrils intermitent, strong, tomen- 

 tose, bifid or trifid. 



Leaves: stipules small in V. coriacea, to medium or large, broad 

 cordate, pinkish or crimson, tomentose in V. candicans; blade small to 



