RANUNCULACEAE. — CLEMATIS 331 



Hemsley in Jour. Linn. Soc. XXIII. 6 (1886). — Sargent in Garden 

 and Forest, III. 620, fig. 82 (1890). — Pritzel in Bot. Jahrb. XXIX. 

 332 (1900). — Mottet in Rev. Hort. 1902, 86, fig. 31. — Pampanini 

 in Nouv. Giorn. Bot. Ital. n. s. XVII. 270 (1910). 



Clematis Vitalba e Japonia Houttuyn, Pflanzensyst. VII. 309, t. 55, f. 2 (1781). 



Clematis crispa Thunberg, Ft. Jap. 239 (non Linnaeus) (1784). 



Clematis virginica Thunberg, Fl. Jap. 230 (non Linnaeus) (1784). 



Clematis Flammula robusta, Carriere in Rev. Hort. 1874, 465, fig. 59; 1899, 



529, fig. 227. 

 Clematis recta, rr. paniculata Kuntze in Verh. Bot. Ver. Brandenb. XXVI. 115 



{Monog. Clem.) (1885). 

 Clematis recta Finet & Gagnepain in Bull. Soc. Bot. France, L. 535 (1903); 



Conlrib. Fl. As. Or. I. 20 (non Linnaeus) (1905). 



Kiangsi: Kiukiang plain, hedgerows, common, alt. 100 m., July 

 27, 1907 (No. 1548; climber 5 m., flowers white). Hupeh: without 

 locality, A. Henry (No. 309). 



Ser. MoNTANAE Schneider.^ 



Clematis gracilifolia Rehder & Wilson, n. sp. 



Frutex scandens, 2-3-metralis, ramis leviter sulcatis subteretibus; 

 ramuli hornotini adpresse cinereo-villosuli, annotini glabri, fusci. 

 Folia decidua, pinnata, plerumque 5-, interdum 7-foliolata; foliola 

 ovata V. oblongo-ovata, breviter petiolulata, basi late cuneata, 

 acuta, grosse v. inciso-dentata dentibus utrinque 1-3 mucronatis, 

 terminale saepe tripartitum, 1-1.5 cm. longa et 0.5-1 cm. lata, utrinque 

 adpresse pilosa, maturitate chartacea, obscure viridia, concoloria, 

 costa et nervis secundariis subtus elevatis; petioli 2-3.5 cm. longi, 

 cirrhosi, sparse pilosi. Flores albi, 2.5-3 cm. diam., 1-4-fasciculati, 

 e gemmis perulatis simul cum foliis orientes; pedicelli graciles, 2-5 

 cm. longi, nudi, accumbenti-villosi ; sepala 4, patentia, obovata v. 

 oblongo-obovata, apice rotundata, basi sensim cuneata, circiter 

 1.5 cm. longa et 7-10 mm. lata; stamina 2-3-seriata, filamentis 4-6 

 mm. longis complanatis linearibus quam antherae angustioribus 



* To this section belongs also the following species not collected during the 

 Arnold Arboretum Expeditions: 



Clematis fasciculiflora Franchet, PI. Delavay. I. 5 (1889). — Finet & Gagnepain 

 in Bull. Soc. Bot. France, L. 523 (1903); Contrib. Fl. As. Or. I. 8 (1905). 



Western Szech'uan: without exact locality, alt. 2000 m., September 1903 

 (Veitch Exped. No. 3127). Yunnan: Mengtze. alt. 1600-1800 m., A. Henry 

 (Nos. 10114, 13627); Szemao, alt. 1600 m., A. Henry (No. 10114''): Yuanchiang, 

 alt. 1600 m., A. Henry (No. 11575). 



