GRAPE BOTANY 313 



Seeds about one-half the size of those of Rotundifolia, similar in other 

 respects. Leafing, flowering and ripening fruit very late. 



The habitat of V. Munsoniana is central and southern Florida 

 and the Florida Keys. It extends south of the habitat of Ro- 

 tundifolia and blends into this species at then* point of meet- 

 ing. Munsoniana appears to be a variation of Rotundifolia, 

 fitted to subtropical conditions. It is tender, not enduring a 

 lower temperature than zero. In the matter of multiplication, 

 it differs from V. rotundifolia in that it can be propagated readily 

 from cuttings. Like Rotundifolia it is resistant to phylloxera. 



3. Vitis rupestris, Scheele. Mountain Grape. Rock Grape. 

 Bush Grape. Sand Grape. Sugar Grape. Beach Grape. 



A small, much branched shrub or, under favorable circumstances, 

 climbing. Diaphragm thin ; tendrils few, or if present, weak, usually 

 deciduous. Leaves small ; young leaves frequently folded on midrib ; 

 broadly cordate or reniform, wider than long, scarcely ever lobed, 

 smooth, glabrous on both surfaces at maturity ; petiolar sinus wide, 

 shallow ; margin coarsely toothed, frequently a sharp, abrupt point 

 at terminal. Cluster small. Berries small, black or purple-black. 

 Seeds small, not notched ; beak short, blunt ; raphe distinct to indis- 

 tinct, usually showing as a narrow groove ; chalaza pear-shaped, 

 sometimes distinct, but usually a depression only. Leafing, blossom- 

 ing and ripening early. 



This species is an inhabitant of southwestern Texas, extend- 

 ing eastward and northward into New Mexico, southern Mis- 

 souri, Indiana and Tennessee to southern Pennsylvania and the 

 District of Columbia. Its favorite places are gravelly banks 

 and bars of mountain streams or the rocky beds of dry water- 

 courses. This species is rather variable both in type and 

 growth. It was introduced into France at about the same time 

 as Vulpina, and the French vineyardists selected the most 

 vigorous and healthy forms for grafting stock. These pass 

 under the various names of Rupestris Mission, Rupestris du 

 Lot, Rupestris Ganzin, Rupestris Martin, Rupestris St. George 



