322 WILSON EXPEDITION TO CHINA 



ad marginem exteriorem, dentibus ut in foliolo terminali, 3-10 cm. 

 longa et 2.5-8 cm. lata; petioli 5-8 cm. longi, cinereo-pubescentes. 

 Flores in fasciculis cymosis axillaribus et terminalibus sat densis, 

 breviter pedicellati, hermaphroditi, intus intense coerulei, extus 

 dense sericeo-pubescentes. Achaenia dense villosa. Ceterum ut in 

 typo. 



Western Hupeh: Ichang, foot of limestone cliff, alt. 50-600 m., 

 August and December 1907 (No. 763, type); same locality (Veitch 

 Exped. No. 2596^); without precise locality, A. Henry (Nos. 3053, 

 4359, 4478). ''Ou-tan-shan," August 1907, C. Silvestri (No. 632); with- 

 out locality, 1907, C. Silvestri (No. 633). Shensi : Tai-pei-shan 1910, 

 W. Purdom; "Huan-tuo-san," October 10-20, 1897, G. Giraldi. 



This variety is chiefly distinguished by its rather dense pubescence. The type 

 agrees in the stems being woody at the base and the leaf-bases rounded, but 

 differs in its more coarsely toothed glabrescent leaves, polygamo-dicEcious flowers 

 and sparsely villose achenes. Var. Davidiana difi"ers in its herbaceous habit, 

 cuneate leaves, glabrescent and coarsely toothed, and more sessile densely clus- 

 tered inflorescence. In general appearance this new variety comes nearest to the 

 form found in Shantung, which, however, has more coarsely toothed, less hairy 

 leaves, usually cuneate at the base and unisexual flowers. The Shensi specimen 

 collected by Giraldi is somewhat less pubescent than the other specimens. 



Ser. CoNNATAE Koehne. 



Clematis pterantha Dunn in Hooker's Icon. XXVIII. t. 2713 

 (1901). — Finet & Gagnepain in Bull Soc. BoL France, L. 544 (1903); 

 Contrib. FL As. Or. I. 29 (1905). 



Clematis Philippiana L6veille et Vaniot in Bull. Acad. Intern. Geog. BoL 

 XI. 169 (1902), secundum Finet & Gagnepain. 



Clematis pterantha, var. grossedentata Rehder & Wilson, n. var. 



A typo recedit foliolis minoribus 4-5 cm. longis chartaceis acutis 

 grossius et saepe incise paucidentatis utrinque sparse breviter ad- 

 presse pilosis, pedicellis et sepalis extus villosis. 



Western Szech'uan: Tung Valley near Wa-shan, thickets, alt. 

 600 m., rare, September 21, 1908 (No. 2488). 



A well-marked variety. In the type the leaves are much larger, papyraceous, 

 long acuminate, less coarsely toothed, glabrous below, the petioles and pedicels 

 also are glabrous. 



Clematis lasiandra Maximowicz in Bull. Acad. Sci. St. Petershourg, 

 XXII. 213 (1876); in Mel. Biol. IX. 586 (1876); in Act. Hort. Petrop. 

 XI. 7 (1890). — Kuntze in Verh. BoL Ver. Brandenh. XXVI. 169 



