1922] REHDER, NEW SPECIES. VARIETIES AND COMBINATIONS 223 



remotely and shallowly dentate or denticulate and much constricted below 

 the middle by the wide rounded sinuses; on vigorous shoots the leaves 

 are up to 8 cm. long, but on the flowering lateral branchlets they are 

 usually only 3.5 to 5 or 6 cm. long. It has some resemblance to the 

 Chinese V. Thunbergii var. adslricta (Hance) Gagnepain, but the leaves of 

 that variety are more often 3-lobed and the lobes are acute or even acumin- 

 ate. The rather small deeply divided leaves give to the plant a very grace- 

 ful appearance and it is well worth cultivation as an ornamental vine. 



Vitis Piasezkii Maxim, var. Pagnuccii, comb, no v. — Vitis Pagnuccii 

 Romanet du Caillaud in Congress Geog. Toulouse (1884), ex Planchon 

 in Vigne Am6r. ix. 283 (1885).— Bailey, Cycl. Am. Hort. iv. 1956 (1902). 

 Schneider, 111. Handb. Laubholzk. n. 302, fig. 206g-g l (1909).— Bean, 

 Trees & Shrubs Brit. Isles, n. 674 (1914). — Ampelovitis Carriere in Rev. 

 Hort. 1888, 537, fig. 134.— Ampelovitis Davidi Carriere, 1. c. 1889, 204 

 tab. — Ampelopsis Davidii Mottet in Nicholson & Mottet, Diet. Prat. 

 Hort. i. 138 (1892). — Ampelovitis Davidiana Carr. ex Bailey, Cycl. Am. 

 Hort. iv. 195b (1902), as synon. — Ampelopsis Davidiana Mottet ex 

 Bailey, 1. c. (1902), as synon. — Vitis Davidiana Hort. ex Bailey 1. c. 

 (1902), as synon. 



China. S hen si: Ho-chen-hao, alt. 1300-1400 m., A. David (type locality, 

 ex Planchon). Hancheng Hsien, W. Purdom, No. 372, 1910. Hupeh: north 

 and south of Ichang, thickets, alt. 700-1000 m., E. II. Wilson, No. 215 (in part 

 as to the fruiting specimen), September 1907. Ho nan: Hweihsien, Shansi, 

 border, J. Hers, No. 721, June 19, 1919; Lushih, Hiung-eul-shan, alt. 1300 m., 

 J. Hers, No. 868, October 9, 1919; Tsi-yuan Hsien, Tien-tan-shan, /. Hers, No. 

 No. 1796, September 21, 1921. 



Cultivated specimens: Vineyard T. V. Munson, Denison, Texas, T. V. 

 Manson, August 18, 1890. Arnold Arboretum, No. 4565 (plant received from 

 Vilmorin-Andrieux & Cie., Paris), August 23, 1906 and September 13, 1912 and 

 October 10, 1908. 



This variety differs from the type chiefly in the absence of the floccose 

 tomentum on the underside of the fully grown leaves and on the young 

 branchlets, otherwise I can find no difference; the variability in the shape 

 of the leaves and the inflorescence and fruit are just the same. Extreme 



forms, those of the type with dense grayish or tawny floccose tomentum on 

 the more strongly reticulate under side of the leaves and those of the 

 variety with glaucescent under side quite glabrous at maturity except 

 axillary tuft of hairs, look certainly different enough to be taken as dis- 

 tinct species, but intermediate forms exist, as Wilson's Nos. 126a and 

 248 and Her's Nos. 1214 and 1364, also Wilson's No. 215 referred to the 

 variety is slightly pubescent on the veins and not as glabrous as the culti- 

 vated plant introduced from France. The typical form seems to be pre- 

 valent in the southwestern part of the range of the whole species and the 

 variety in the northeastern part; among the numerous specimens before 

 me from Hupeh only Wilson's No. 215 has glabrescent leaves, while three 

 of the specimens from northern Ilonan belong to the variety and two to 



