338 WILSON EXPEDITION TO CHINA 
Clematis grata, var. grandidentata Rehder & Wilson, n. var. 
Clematis grata Pritzel in Bot. Jahrb. XXIX. 333 (1900). 
Clematis grata, f.-glabrata Pritzel, 1. e. (nomen nudum). 
Clematis Vitalba, y. Cl. grata Finet & Gagnepain in Bull. Soc. Bot. France, 
L. 532 (1903); Contrib. Fl. As. Or. I. 17 (pro parte) (1905). 
Frutex scandens, 3-10-metralis, ramulis hornotinis pubescentibus 
suleatis. Foliola 3-5, lateralia ovata, 5-9 cm. longa et 3-6, plerumque 
7 cm. lata, acuminata, basi rotundata rarius subcordata v. late 
euneata, inciso-dentata infra medium plerumque integra dentibus 
utrinque plerumque 5-6 inaequalibus late triangulari-ovatis acutis 
et mucronulatis patentibus et apice interdum leviter recurvo sinubus 
saepe fere angulum rectum formantibus, petiolulo 0.5-11 em. longo 
breviter villoso, folium terminale late ovatum v. obovatum, saepe 
trilobum, 5-9 cm. longum et 4-8 cm. latum, petiolulo ad 4 em. longo, 
foliola supra sparse adpresse pilosa, maturitate glabrescentia, subtus 
breviter adpresse sericeo-pilosa, densius ad nervos, interdum glabres- 
centia. Flores in cymis 3-floris axillaribus ramulorum apicem versus 
panieulas aphyllas formantibus. Ceterum ut in typo. 
May and August 1907 (No. 110, type); Hsing-shdn Hsien, thickets, 
alt. 1000-1600 m., May and September 1907 (No/ 338); Fang Hsien, 
thickets and margins of woods, alt. 1300-1600 m., May and October 
1907 (Nos. 427, 427°); without locality, June and July 1900 (Veitch 
Exped. Nos. 974, 130823); without locality, A. Henry (Nos. 2015, 
56475, 5578); “Ma-pan-scian,” alt. 1000 m., May 1901, C. Silvestri (No. 
630). Western Szech'uan: Wa-shan, thickets, alt. 1600-2300 m., 
June and October 1908 (No. 1100); west and near Wén-ch'uan Hsien, 
woodlands, alt. 1600-2300 m., July and November 1908 (No. 1233) ; Mt. 
Omei, July 1904 (Veitch Exped. No. 4697); vicinity of Tachien-lu, alt. 
3000-4500 m., A. E. Pratt (No. 78); without locality, A. Henry (Nos. 
5578, 5647, 7267) ; without locality, A. von Rosthorn (Nos. 2023, 2538). 
Shensi: north-west of Hancheng Hsien, 1910, W. Purdom (No. 
381); Tai-pei-shan, 1910, W. Purdom (No. 1). 
The large, coarsely toothed leaflets readily distinguish this variety from the 
type. It is à mountain plant abundant in the thickets, margins of woods and 
eopses throughout central and western China. Under the name Mu-t'ung this 
plant is valued in Chinese medicine as an emetie, purgative and vesicant. A 
picture of it will be found under No. 0136 of the collection of Wilson's 
photographs. 
Western Hupeh: Patung Hsien, thickets, à 1000-1600 m., 
