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 Now. Giorn. Bot. Ital. n. s. XVII. 270 (1910). 
Clematis Vitalba e Japonia Houttuyn, Pflanzensyst. VII. 309, t. 55, f. 2 (1781). 
Clematis crispa Thunberg, Fl. Jap. 239 (non Linnaeus) (1784). 
Clematis virginica 'Thunberg, Fl. Jap. 230 (non Linnaeus) (1784). 
Clematis Flammula robusta, Carriére in Rev. Hort. 1874, 465, fig. 59; 1899, 
529, fig. 227. 
Clematis recta, m. paniculata Kuntze in Verh. Bot. Ver. Brandenb. XXVI. 115 
(Monog. Clem.) (1885). 
Clematis recta Finet & Gagnepain in Bull. Soc. Bot. France, L. 535 (1903); 
Contrib. 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 suleatis 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 em. 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 em. longa et 7-10 mm. lata; stamina 2-3-seriata, filamentis 4-6 
mm. longis complanatis linearibus quam antherae angustioribus 
1 To this section belongs also the following species not collected during the 
Arnold Arboretum Expeditions: 
, Clematis fasciculiflora Franchet, Pl. 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. 62D: Szemao, alt. 1600 m., A. Henry (No. 10114*?): Yuanchiang, 
alt. 1 „ A. Henry (No. 11575). 
— 
