316 WILSON EXPEDITION TO 



This is the most widely distributed of all Chinese Roses, being found in all the 

 warmer parts of China from the sea-coast to the extreme western part of Szech'uan. 

 It is particularly abundant in the neighborhood of Ichang in grassy and stony places 

 fully exposed to the sun. It varies considerably, often on the same branch, in degree 

 of hairiness and in the size of leaves and corymbs. Several specimens from Hupeh 

 have very villose young shoots and leaf-rhachis, while those from Chekiang and 

 western Szech'uan are often quite glabrous; the number and form of the spinuHform 

 appendages to the calyx-lobes is also variable. Nevertheless it is an exceptionally 

 well-marked species agreeing with R. Banksiae Aiton, in its free, hnear, and rarely 

 deciduous stipules, but differing from that species in its cymose-corymbose inflores- 

 cence and exserted styles which, however, are not connate into a column, as in 

 the Synstylae, where Cr6pin places this species. This Rose is first mentioned by 

 Petiver in his Gazophjlacium Naturae et ArtiSj 56, t. 35, fig. 11 (1704), under the 

 name of " Rosa Ckusan. glabra, Juniperifructu" and his figure of a fruiting branch 

 is excellent. Linnaeus {Spec. I. 492 [1753]) cites Petiver's plant under his R. indicay 

 but certainly the greater part at any rate of the description belongs to another 

 plant. The Rose figured by Ker {Icon. PicL Indo.-As. PL Dom. Catiley [1818]; 

 Icon. PL Chin, e hibL Braamiana [1821]), and considered by Hemsley (in Jour. 

 Linn. Soc. XXIII. 248 [1887]) to be the wild form of R. Banksiae Aiton, is the R. 

 microcarpa Lindley, as the cymose inflorescence proves, and was so interpreted by 

 Walpers {Rep. 11. 12) and others. Hemsley (1. c. 252) considers that Rosa intermedia 

 or R. dubia Carriere (in Rev. Hori. 1868, 270, figs. 29, 30) ''is apparently the same 

 as, or closely alUed to, R. microcarpa Lindley." Miss Willmott {Gen. Rosa, 1. 113) 

 cites these names as synonyms of Lindley's plant. The shape of the stipules and 

 the leaves and inflorescence show that the Rose Carriere described as R. dubia and 

 figured as R. intermedia is R. multiflora Thunberg. L^veille (1. c.) states that his 

 R. Chaffanjoni has the styles glabrous; but in the specimens he has sent us they 

 are decidedly villose. We can find no characters by which we can separate the 

 various forms of this Rose which Leveille has described as species. We suspect, 

 too, that Rosa Colletiii Cr^pin (in BulL Soc. Bot. Belg. XXVIII. CompU Rend. 49 

 [1889]) is only a geographical variant of R. microcarpa Lindley, but CoUett & 

 Hemsley's figure (in Jour. Linn. Soc. XXVIII. 56, t. 10 [1891]) represents a form 

 which is rather different in aspect from any we have seen. 



Rosa Banksiae Aiton, HorL Kew, ed. 2, III. 258 (1811). — Sims in 

 BoL Mag. XLV. t. 1954 (1818). — Lindley, Ros, Monog. 131 (1820). 

 Thory in Redouts, Roses, II. 43, t. (1821). 



Rosa Banksiae, var. albo-plena Rehder in Bailey, CycL Am. Hort IV. 1552 



(1902). 

 Rosa Banksiae, f. subinermis, fl. pleno v. semipleno albo Focke in Not. Bot. 



Gard. Edinburgh, V. 65 (1911). 



The original Rosa Banksiae Aiton is known only as a cultivated plant; it has 

 double-white flowers and was first sent to England in 1807 by William Kerr from 

 gardens in or near Canton. To this typical form belong Henry's No. 10508, 

 described on his label as a large climber with white flowers from mountains north 

 of Mengtsze, Yunnan, and Forrest's No. 2048 from western Yunnan. This form 

 and the double-yellow flowered R. Banksiae lutea Lindley, are commonly cultivated 

 in gardens of central and southern Japan, having, according to Professor M. Shirai 

 (A Chronological Table of Natural History in Japan [1908]), been introduced from 

 China in 1733. 



