=1.= Scheele, _Linn._, =21=:591. 1848. =2.= Ravenel, _U. S. Pat. Off. Rpt._, =1859=:539. _Mountain grape_ of Texas. =3.= Buckley, _Ib._, =1861=:485. _Rock grape._ =4.= Prince, _Gar. Mon._, =5=:73. 1863. _Bush grape_ of Texas. =5.= Engelmann, _Mo. Ent. Rpt._, =1872=:61. _Sand grape; Sugar grape._ =6.= Jaeger, _Mo. Hort. Soc. Rpt._, =1883=:41. =7.= Engelmann, _Bush. Cat._, =1883=:10, 11, 12, 14, 18. _Rock grape; Sand grape; Sugar grape._ =8.= Bush, _Ib._, =1883=:21, 26. =9.= Munson, _Am. Hort. Soc. Rpt._, =1885=:132. _Sand-beach grape; Sugar grape._ =10.= Campbell, _Am. Pom. Soc. Rpt._, =1885=:84. =11.= Munson, _Ib._, =1885=:97, 98. =12.= Ib., _Soc. Prom. Ag. Sci. Rpt._, =1887=:59. _Sugar grape; Sand grape; Beach grape._ =13.= Planchon, _De Candolle's Mon. Phan._, =5=:323, 346. 1887. _Sand grape; Sugar grape; Mountain grape._ =14.= Munson, _Gar. and For._, =3=:474. 1890. =15.= Ib., _U. S. D. A. Pom. Bul._, =3=:7, 9. 1890. =16.= Ib., _Am. Gard._, =12=:659. 1891. =17.= Ib., _Mich. Hort. Soc. Rpt._, =1893=:116. _Rock grape; Sand grape._ =18.= Munson, _Bush. Cat._, =1894=:20, 22. =19.= Husmann, =1895=:110, 188. =20.= Britton and Brown, =2=:411. 1897. _Sand grape; Sugar grape._ =21.= Bailey, _Gray's Syn. Fl._, =1=:421. 1897. _Sand grape; Sugar grape; Rock grape; Bush grape; Mountain grape._ =22.= Beach, _N. Y. Sta. An. Rpt._, =17=:537, 557. 1898. =23.= Munson, _Tex. Sta. Bul._, =56=:234, 235, 239, 259. 1900. _Rock grape._ =24.= Viala and Ravaz, _Am. Vines_, =1903=:42, 82. Small, much branched shrub or sometimes, under favorable circumstances, slightly climbing. Diaphragm thin but slightly thicker than Riparia; tendrils few, or, if present, weak, usually deciduous. Leaves rather small; young leaves frequently folded on midrib; broadly cordate or reniform, wider than long, scarcely ever slightly lobed, smooth, glabrous on both surfaces at maturity; petiolar sinus wide, shallow; margin rather coarsely toothed, frequently a sharp abrupt point at terminal. Cluster small. Berries small, usually larger than Riparia, color black or purple-black. Seeds small, not notched; beak short, rather blunt; raphe slightly distinct to indistinct, usually showing as a narrow groove; chalaza of medium size, pear-shaped, sometimes distinct, but usually a depression only. Leafing, blossoming, and ripening early (blossoming soon after Riparia). Rupestris seems to have been first described and named by Scheele in 1848 in a contribution on the flora of Texas to the periodical _Linnaea_. Ravenel, in 1859, states that this grape is found in Texas and is there known as the Mountain grape. It was mentioned and described by Buckley, Engelmann, and all of the later botanists. (See Plate.)