VITIS 



VITIS 



34S3 



nearly orbicular to reniform, 3-neryed, obtusely 5- 

 angled, the margin repand-dentate, with ovate stipules: 

 infl. thyrse-like, tomentose, with long peduncles, the 

 fls. woolly, with 5 triangular-ovate petals and 5 sta- 

 mens, the ovary hirsute and style short: fr. globular, 

 red-black and glossy, usually 2-seeded, about Yvn.. 

 diam., said to be excellent for sirups, jellies, and for 

 stewing. S. Afr. Tubers reported as making whole- 

 some fodder for cattle. 



3. C. hypoglauca, Gray (VUis hypoglauca, Muell.). 

 Foliage handsome and persistent, dark green above and 

 glaucous beneath; Ifts. usually 5, obovate to elliptic, 

 acuminate, stalked, entire or toothed toward the apex: 

 fls. yellowish: fr. nearly globular. Austral. 



4' C. rhombifolia, Planch. (Tl/ts rhombifblia, Vahl). 

 Scandent evergreen, the branches angled but not 

 winged: Ivs. 3-foliolate, petioled; Ifts. all long-petiolu- 

 late, serrate, glabrous above, the lateral ones oblique 

 and somewhat cordate, the middle one ovate to rhomb- 

 ovate: fls. many in If .-opposed clusters, the calyx and 

 petals pubescent. W. Indies, S. Amer. 



5. C. oblonga, Planch, (\~itis ottonga, Benth.). Erect 

 tree-like evergreen species, the branches with a few 

 tendrils, glabrous or the young shoots minutely tomen- 

 tose: Ivs. simple, broad-oblong to ovate-oblong, obtuse, 

 about 1-2 in. long, entire, obscurely 3-nerved: fr. 

 ovoid, small, 1-2-seeded, in short-peduncled cymes. 

 Austral. Allied to C. antarctica. 



II. Species of VUis, or true grapes: plants yielding the grapes 

 of commerce, but some of them grown for arbors and 

 for ornament. 



A. Bark bearing prominent lenticels, never 

 shredding: nodes without diaphragms: 

 tendrils simple: fl.-clusters small and 

 not much elongated: seeds oral or 

 oblong, without a distinct stipe-like 

 beak. (Muscadinia; separated as a 

 genus by Small.) 



B. Berries large (J4m. or more diam.), 

 musky-tasted: Its. firm or dense in 



texture, prominently pointed 6. rotundifolia 



BB. Berries half smaller, acid: Its. thin, 



not prominently pointed 7. Munsoniana 



AA. Bark without distinct lenticels, on the 

 old wood separating in long thin 

 strips and fibers: nodes provided with 

 diaphragms: tendrils forked: fl.- 

 clusters mostly large and elongated: 

 seeds pyriform. (Euritis.) 

 B. The wine-grape, grown extensively in 

 Calif, as well as in Eu., and also in 

 glass graperies: skin and pulp 

 mostly firmly adhering in the ripe fr. 8. vinifera 

 BB. The grape-s of more modern domestica- 

 tion or intro. representing the com- 

 mercial kinds in .V. Amer. outside 

 the Calif, region, and exotic species 

 grown for ornament: skin of the 

 mature berry usually separating 

 freely from the pulp, 

 c. Sts. stiff-hairy or bristly, or prickly. 



(Spinovitis.) 

 D. Lrs. becoming glabrous beneath: sts. 



glabrous and prickly 9. Davidii 



DD. Lrs. floccose or loosely pubescent 

 beneath: sts. glandular-bristly 



and pubescent 10. Romanetii 



CC. Sts. glabrous or pubescent, not acu- 

 leate or armed. 



D. Vitis species of AT. Amer., some of 

 them giving rise to pomological 

 races and the others of botanical 

 interest. (Xos. 11-32). 

 E. Class of green-lvd. grapes, mostly 

 marked at maturity by absence of 

 prominent white, rusty, or blue 

 tomentum or scurf or conspicu- 

 ous bloom on the Its. beneath 

 (under surface sometimes thinly 

 pubescent, or minute patches of 



floccose wool in the axils of the 

 veins, or perhaps even cobwebby) : 

 foliage mostly thin: tendrils in- 

 termittent, i. e., every third joint 

 bearing no tendrils (or infl.). 

 V. cinerea and V. arizonica are 

 partial exceptions and might be 

 looked for in EE (Nos. 11-23). 

 F. Group of vulpina-like grapes, 

 characterized by thin light or 

 bright green mostly glossy Its. 

 (which are generally glabrous 

 below at maturity except per- 

 haps in the axils of the veins and 

 in V. Champinii, with a long 

 or at least a prominent point 

 and usually long and large 

 sharp teeth or the edges even 

 jagged. 



G. LTS. broader than long, with 

 truncate-oblique base. (V. 

 Treleasei might be sought 



here.) 11 rupestris 



GG. Lts. ovate in outline, with a 

 mostly well-marked basal 

 sinus. 



H. Diaphragm (in the nodes) 



thin: young shoots not red: 



hs. not deeply lobed. 



I. Lf.-margin not lobed or only 



obscurely so, the teeth small 



or else not elongated 12. monticola 



13. Champinii 



JL 14- -margin tending to be 

 prominently lobed above, 

 the teeth usually long. 

 3. Young parts pubescent or 



floccose 14. Longii 



jj. Young parts nearly or quite 



glabrous. 

 'K. Tendrils prominent and 



persisting 15. vulpina 



KK. Tendrils small and decidu- 

 ous 16. Treleasei 



HH. Diaphragm very thick and 

 strong: young shoots bright 

 red: Ivs. often strongly lobed.17. rubra 

 FF. Group of cordifolia-like grapes, 

 with thickish and dull-colored 

 or grayish green Ivs. often hold- 

 ing some close dull pubescence 

 below at maturity and the shoots 

 and Its. nearly always more or 

 less pubescent when young, the 

 teeth mostly short, the point 

 mostly rectangular and con- 

 spicuous. 

 G. Plant strong and climbing, with 



stout persistent tendrils. 

 H. Young shoots terete or slender, 

 and glabrous or very soon 



becoming so 18. cordif olia 



HH. Young shoots angled, and cov- 

 ered the first year with tomen- 

 tum or wool. 



I. Under surface of Its. glabrous 



or essentially so at maturity. 



3. Blade of If. lustrous or glossy 



when full grown 19. Berlandieri 



H. Blade of If. dull 20. Baileyana 



n. Under surface of hs. grayish 



pubescent 21. cinerea 



GG. Plant scarcely climbing, the 

 tendrils perishing when fail- 

 ing to find support 22. arizonica 



FFF. Group of orbicular-scallop-lvd. 



species of the Pacific coast 23. California 



EE. Class of colored-lvd. grapes, 

 marked by thick or at least firm 

 foliage, the Ivs. prominently 

 rusty or whtie-tomentose or 

 glaucous-blue. V. cinerea, V. 

 ari-onica, and possibly V. 

 californica might be sought here; 

 and late-gathered forms of V. 

 bicolor might be looked for in E. 



