VITIfe 



Macoun. to N. Dnk., Kans. and Colo, and south to W. Va., 

 Mo. and N.W.Texay. B.M 2421). -The commonest Urapo 

 in the northern states w^st of New Enijhind, abundant 

 alonj< streams. Varial)le in the flavor and maturily of 



the fruit. Forms witti petioles aud uu<U'r surfa<-e"s of 

 I vs. puliesceut sometimes occur. ( )ccasion!ilIy 

 liyitridizes with I'. Labnt.'^CK eastward, the liy- 

 brid beiuij known by the tnmentosu young 

 shoots and uufoklint; leaves, and the darker foli- 

 aire, which is marked with rusty tomeutum alon^ 

 the veins of the less jag-ged leaves. 



Var. pr^BCOX. Bailey, is the Ji-ne Grape of 

 Missouri, the little sweet fruits ripening in July. 



10. Treleasei, Muus 



VITIS 1951 



cnlj'iua, nnidu-aus and <:or<lifolin having,' been sug- 

 gested as jts probable ).a,re>nts. It is variable in char- 

 In most of Ms forms it would betaken for a com- 



npenin 

 Plant shrubby 



I lie, the sma 



much branched, 

 mostly short ( general I \" 

 shorter than the Ivs.) ten 

 drils deculuous the lirst year 

 uHless finding support, in- 

 ternodes short, the dia- 

 ph ragms twice thicker 

 (about one - sixteeutii in. I 

 than in V. vulphia and shal- 

 low-biconcave: stipules less 

 than one-fourth as large as 

 in V. fu/pina : Ivs. large 

 and green, very broad-ovate 

 or even reniform - ovate 

 ( often wider than Ion 2: 1 . 

 thin glabrous and shining 

 on both surfaces, the basal 

 sinus very broad and open 

 and making no distinct an- 

 gle with the petiole, the 

 margin unequally notch - 

 toothed (not Jagged as in ['. 

 vulpuia) and indistinctly o- 

 lobed, the apex much shorter 

 than in I', vnlpina : fertile 

 lis. with very short, recurved 

 stamens, sterile with as- 

 cending stamens: cluster 

 small (2 to '.i in. long) : ber- 

 ries ^z in- or less thick, black 

 with a thin bloom, ripening 

 three weeks later than I'. 

 vii/pina when gro'wn in the 

 same place, thin-skinned: 

 pulp juicy and 

 sweet: seeds 

 small. Brewster 

 county, S. W. 

 Texas and New 

 Mexico to Brad- 

 shaw Mountains. 

 Arizona. — Little 

 known, and pos- 

 sibly a dry-coun- 

 try form of r. 

 ml pinn . In habit i r sug- 

 gests r. Arizoiiica, var. i/hi- 

 hra, from which it is dis- 

 tinguished, among other 

 things, by its earlier flower- 

 ing and larger leaves with 

 coarser tcptli and less 

 pointed apex. 



11. L6iigii, Prince f V. 

 .Solutns, Planch. P. M(h:o- 

 Mc.ficana, Lemm.). Diifei-s 

 from vigorous forms of P. 

 vnlpina in having floccose 

 or pubescent young growth : 

 Ivs. decidedly more circular 

 in outline, with more angu- 

 lar teeth and duller in color, 

 often distinctly pube.scent 

 beneath: stamens in fertile 

 fls. short and weak and 

 laterally reflexed, those in sterile fls. long and strong: 

 seeds larger. N. AY. Texas and New Mexico. — Regarded by 

 French authors as a hybrid, the species P. rupesfri.s, 



123 



2698. Vitis vulpina (or V. ripariaj. Natural size. 

 Probably the most widesprejid of American native grapes. 



was very likely originally a hybrid between P. rupesfris 

 (which it sometimes closely resembles in herbarium 

 specimens except for its woulliness ) and some tomentose 



