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. c. (nomen nudum). 



Clematis Vitalba, y. CI. 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 

 sulcatis. Foliola 3-5, lateralia ovata, 5-9 cm, longa et 3-6, plerumque 

 7 cm. lata, acuminata, basi rotundata rarius subcordata v. late 

 cuneata, 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 cm. longo 

 breviter villoso, folium terminale late ovatum v. obovatum, saepe 

 trilobum, 5-9 cm. longum et 4-8 cm. latum, petiolulo ad 4 cm. longo, 

 foliola supra sparse adpresse pilosa, maturitate glabrescentia, subtus 

 breviter adpresse sericeo-pilosa, densius ad nervos, interdum glabres- 

 centia. Flores in cymis 3-fioris axillaribus ramulorum apicem versus 

 paniculas aphyllas formantibus. Ceterum ut in typo. 



Western Hupeh : Patung Hsien, thickets, alt. 1000-1600 m., 

 May and August 1907 (No. no, type); Hsing-shan 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 locahty, June and July 1900 (Veitch 

 Exped. Nos. 974, 1308^^); without locality, A. Henry (Nos. 2015, 

 5647% 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. iioo); west and near Wen-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 locahty, A. von Rosthorn (Nos. 2023, 2538). 

 Shensi: north-west of Hancheng Hsien, 1910, TV. 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 a mountain plant abundant in the thickets, margins of woods and 

 copses throughout central and western China. Under the name Mu-t'ung this 

 plant is valued in Chinese medicine as an emetic, purgative and vesicant. A 

 picture of it will be found under No. 0136 of the collection of Wilson's 

 photographs. 



