TROCHODENDRACEAE. 



Determined by Alfred Rehder and E. H. Wilson. 



EUPTELEA Sieb. & Zucc. 



Euptelea pleiospenna Hooker & Thomson in Jour. Linn. Soc. VII. 

 240, t. 2 (1864); in Hooker f., Fl. Brit. Ind. I. 39 (1872). — King in 

 Ann. Bot. Gard. Calcutta, III. 199, t. 39^ (1891). — Solereder in Ber. 

 Deutsch. Bot. Ges. XVII. 399 (1899). — Finet & Gagnepain in Bull. 

 Soc. Bot. France, LII. M^m. IV. 25 (1905); Contrib. Fl. As. Or. II. 25 

 (1907). 



Euptelea Davidiana Baillon in Adansonia XI. 305 (1875). — Franchet in 

 Nouv. Arch. Mus. Paris, ser. 2, VIII. 193 (PL David. II. 11) (1886). — 

 Van Tieghem in Jour, de Bot. XIV. 271 (1900). — Hemsley in Hooker's 

 Icon. XXVIII. sub t. 2787 (1905), quoad specimina e Mupin et Yun- 

 nan. — Finet & Gagnepain in Bull. Soc. Bot. France, LII. Mem. IV. 25 

 (1905); Contrib. Fl. As. Or. II. 25 (1907). 



Euptelea Delavayi Van Tieghem in Jour, de Bot. XIV. 273 (1900). 



Western Szech'uan: east of Mao-chou, Chiu-ting-shan, thickets, 

 alt. 1300-2000 m.. May 22, 1908 (No. 3546; bush or small tree, 4-8 m. 

 tall); west of Kuan Hsien, Niu-tou-shan, woods, alt. 1600-2800 m., 

 June 20, 1908 (No. 3546''; small tree 8 m. tall); without precise local- 

 ity, alt. 1600-2600 m., July 1903 (Veitch Exped. No. 3133); Wei- 

 kuan, A. von Rosthorn (No. 2517). Yunnan: Mengtze, mountains 

 north, woods, alt. 2300 m., A. Henry (No. 10746). 



This small tree is abundant in the thickets and margins of woods, especially in 

 the vicinity of streams throughout western Szech'uan from the neighborhood of 

 Sung-pan in the north to Tachien-lu in the west and southwards through Yunnan. 

 We have no specimens actually localized from Mupin, but have them from the 

 northern, southern and western boundary of this petty state. We have not seen 

 the type of Baillon's E. Davidiana, but the geographical distribution so strongly 

 supports Solereder's evidence that there can be no doubt but Baillon's fragment 

 is referable to the same species and to its numerous specimens before us. 



Hooker & Thomson describe the under surface of the leaves as " pale," but 

 glaucescent gives a better idea of the appearance, which is due to a dense cover- 

 ing of papillae. This glaucescent appearance of the under surface readily dis- 

 tinguishes this species which, like E. Franchetii, is a small bushy tree, with thin 

 branches and leaves assuming brilliant tints in the autumn. 



Our specimen of Henry's 10746 has all the leaves ovate, acuminate and broadly 



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