VITIS 



Macoun, toN. Dak., Kans. and Colo, and south to W Va 

 Mo. and N.W.Texas. B.M 2429. -The commonest Grape 

 in the northern states west of New England, abundant 

 along streams. Variable in the flavor and maturity of 

 tin- fruit. Forms with petioles and under surfaces of 

 Ivs. pubescent sometimes occur. Occasionally 

 hybridizes with V. Labrusca eastward, the liy 

 brid being known by the tomentose youiig 

 shoots and unfolding leaves, and the darker foli- 

 age, which is marked with rusty tomentum along 

 the veins of the less jagged leaves. 



Var. prJecox, Bailey, is the JCNE GRAPE of 

 Missouri, the little sweet fruits ripening in July. 

 10. Treleasei, Munson. Plant shrubby and 

 much branched, climbing little, the small and 

 mostly short (generally 

 shorter than the Ivs.) ten- 

 drils deciduous the first year 

 unless finding support, in- 

 ternodes short, the dia- 

 phragms twice thicker 

 (about one - sixteenth in.) 

 than in V. vulpina and shal- 

 low-biconcave: stipules less 

 than one-fourth as large as 

 in V. I'ltlpinn : Ivs. large 

 and green, very broad-ovate 

 or eve n reniform - ovate 

 (often wider than long), 

 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 I". 

 vulpina} and indistinctly 3- 

 lobed, the apex much shorter 

 than in V. rufphiti : fertile 

 fls. with very short, recurved 

 stamens, sterile with as- 

 cending stamens: cluster 

 small (2 to 3 in. long) : ber- 

 ries l / s in. or less thick, black 

 with a thin bloom, ripening 

 three weeks later than I'. 

 vulpina when grown in the 

 same place, thin-skinned: 

 pulp juicy and 

 sweet: seeds 

 small. Breu-sti'i- 

 county, S. VY. 

 Texas and New 

 Mexico to Brad 

 shaw Mountains. 

 Arizona. Little 

 known, and pos- 'ffl 

 sibly a dry-coun- 

 try ' form of V. 

 r'l/pina. In habit it sug- 

 gests r. Arizonica, var. gla- 

 brii. from which it is dis- 

 tinguished, among other 

 things, by its earlier flower- 

 ing and larger leaves with 

 coarser teeth and less 

 pointed apex. 



11. L6ngii, Prince (V. 

 Solonis, Planch. I'. Nuevo- 

 M>>.i-ic,\n<i, Lemm.). Differs 

 from vigorous forms of V. 

 vulpina in having floccose 

 or pubescent young growth : 

 Ivs. decidedly more circular 

 in outline, with more angu- 

 lar teeth and duller in color, 

 often distinctly pubescent 

 beneath: stamens in fertile 

 fls. short and weak and 



laterally re flexed, those in sterile fls. long and strong: 

 seeds larger. N.W.Texas and New Mexico. Regarded by 

 Frencli authors as a hybrid, the species V. rupestris, 



123 



VITIS 



vulpina, candicang and cordifolia bavin* bee 



gested as its probable pan-nts. I, is variable i, 

 acter In ,>, of its forms it would be tak, for 

 I"""!'t "I" I". r,,,,r sM , and K. vutpino bu t he 1 , r 

 species is not known to occur in most of its range It 



2698. Vitis vulpina (or V. riparia). Natural size. 

 Probably the most widespread of American native grapes. 



was very likely originally a hybrid between I', rupestrii 

 (which it sometimes closely resembles in herbarium 

 specimens except for its woolline.ss) and some tomentose 



