RANUNCULACEAE. — CLEMATIS 321 



Verh. BoL Ver. Brandenh. XXVI. 182 (Monog. Clem.) (1885).— 

 Hemsley in Jour. Linn. Soc. XXIII. 4 (1886). — Pritzel in BoL 

 Jahrb. XXIX. 332 (1900). — Finet & Gagnepain in Bull. Soc. BoL 

 France, L. 545 (1903); Contrih. Fl As. Or. I. 31 (1905). — Pampanini 

 in Nuov. Giorn. BoL Ital. n. ser. XVII. 269 (1910). 



Clematis tubulosa Turczaninow in Bull. Soc. Nat. Mosc. X. 7. 148 (1837). — 



Hooker in Bot. Mag. LXXII. t. 42G9 (1846). — Lindley in Jour. Hort. Soc. 



III. 78 (1848). — Paxton, Mag. Bot. XIV. 31, t. (1848). — Hance in Jour. 



Linn. Soc. XIII. 75 (1873). — Maximowicz in Bull. Acad. Sci. St. Peters- 



bourg, XXII. 214 (1876); in Mel. Biol. IX. 589 (1876). — Decaisne in Nouv. 



Arch. Mus. Paris, ser. 2, IV. 204 t. 9 (1881).— Lavallde, Clem. 79 (1884).— 



Schneider, III. Handb. Laubholzk. I. 281, fig. 184 h, 185 a-c (1906). 

 Clematis Davidiana Verlot in Rev. Hort. 1867, 90. — Decaisne in Nouv. 



Arch. Mus. Paris, ser. 2, IV. 205, t. 10 (1881). — Schneider, III Handb. 



Laubholzk. I. 281, fig. 184 k, 185 f-g (1906). 

 Clematis Hookeri Decaisne in Nouv. Arch. Mus. Paris, s^r. 2, IV. 206, t. 11 



(1881). 

 Clematis tubulosa, var. Davidiana Franchet in Nouv. Arch. Mu^. Paris, ser. 



2, V. 165 {PL David. I. 13) (1882). 

 Clematis tubidosa, var. Hookeri Hooker f. in Bot Mag. XLI. t. 6801 (1885). 

 Clematis heracleaefolia, var. Davidiana Hemsley in Jour. Linn. Soc. XXIII. 4 



(1886). 



Type in Manchuria and north-east China. 



Plants grown in this Arboretum from seeds collected south of Jehol by M 

 Purdom seem indistinguishable from C. tubulosa Turczaninow which represents 

 the type of the species, while all the other synonyms are referable to the var. 

 Davidiana Hemsley. These seeds came from the locaUty where Staunton collected 

 the specimen on which C. heracleaefolia De Candolle is founded. From the mass 

 of material before us we are disposed to refer all the continental forms of this 

 group to C. heracleaefolia De Candolle and its varieties, considering them all 

 variations of one polymorphic, polygamous species. The Japanese C. stans Siebold 

 & Zuccarini (syn. C. Maximowiczii Decaisne, C. Lavallei Decaisne, C. Savatieri 

 Decaisne) with its coarsely toothed and lobed leaves, loosely paniculate inflores- 

 cence, small whitish flowers and glabrescent, shining, ovoid achenes, seems to U3 

 sufficiently distinct to be considered a species. 



Clematis heracleaefolia, var. ichangensis Rehder & Wilson, n. var. 



Suffruticosa, basi tantum lignosa, ramis pubescentibus. Folia 

 ternata, intense viridia, supra sparse adpresse breviter pilosa, subtus 

 molliter subaccumbenti-villosa praecipue ad nervos; foliolum ter- 

 minale late ovatum v. rotundato-ovatum, leviter 3-lobatuni, breviter 

 acuminatum, basi rotundatum, sparse et inaequaliter dentatura 

 dentibus brevibus plerumque rotundatis mucronatis, 6-10 cm. 

 longum et 4-10 cm. latum, petiolulo 2.5-5 cm. longo cinereo-pubes- 

 centi ; f oliola lateralia subsessilia, ovata v. late ovata, acuta v. breviter 

 acuminata, basi obliqua rotundata v. truncata, saepius lobo unico 



