242 WILSON EXPEDITION TO CHINA 
petiolis distinctius pilosis, fructibus stipitibus quam perigonium 
subduplo longioribus suffultis. 
Western Szech'uan: Wa-shan, woods, alt. 2200 m., July 1908 
(No. 820, type; tree 17 m. tall, girth 1.8 m.; with ripe fruits and good 
leaves); near Wa-shan, roadside, alt. 1600 m., September 9, 1908 (No. 
1423; tree 27 m. tall, girth 2.4 m.; sterile, leaves very rough on both 
sides, up to 15.5 em. long and 7 em. broad); southeast of Tachien-lu, 
alt. 2400 m., woods, October 1910 (No. 4360; tree 8-10 m. tall, girth 
0.6 m.; sterile, leaves very rough, but a little more glabrous beneath). 
This seems to be a distinct variety, and it may even represent a species. The 
young twigs are glabrous, and the winter-buds are glabrous or slightly hairy. The 
shape of the leaves is scarcely different from that of the type, the compound 
serration being very similar. The main teeth usually possess 3-4 small, rather 
sharp secondary teeth. The most distinct character is found in the fruit, which, on 
account of its long stipe, much resembles that of U. Brandisiana Schneider. 
This tree is not common, but is found scattered over a wide area in western 
Szech'uan. In habit and in general appearance it differs in no way from the type 
species. It is in cultivation in this Arboretum from living material I sent in 1908 
under No. 1423. 
A picture will be found under No. 349 of the collection of my photographs and 
also in my Vegetation of Western China, No. 492. E. H. W. 
Ulmus pumila Linnaeus, Spec. 226 (1753), exclud. synon. Plukenet. — 
Pallas, Fl. Ross. I. 76, t. 48, fig. A, C, E (1784), exclud. plantas e Ros- 
sia et forma suberosa e Sibiria.! — Aiton, Hort. Kew, I. 320 (1789). — 
Willdenow, Berlin Baumz. 395 (1796); Spec. I. pt. 2, 1326 (1798), 
exclud. synon. pro parte. — Persoon, Syn. I. 291 (1805). — Plan- 
chon in Ann. Sci. Nat. sér. 3, X. 271 (1848); in De Candolle, Prodr. 
XVII. 159 (1873). — Turezaninow in Bull. Soc. Nat. Mosc. XXVII. 
368 (1854), exclud. var. 8; Fl. Baical-Dahur. 95 (1856), exclud. var. 
B8. — Maack & Ruprecht in Bull. Phys.-Math. Acad. Sci. St. Péters- 
bourg, XV. 375 (1857); in Mél. Biol. II. 556 (1858). — Trautvetter 1n 
Mém. Sav. Étr. Acad. Sci. St. Pétersbourg, IX. 248 (Maximowicz, 
Prim. Fl. Amur.) (1859). — Franchet in Nouv. Arch. Mus. Paris, sér. 
2, VII. 78 (Pl. David. I. 268) (1884). — Dippel, Handb. Laubholzk. H. 
27 (1892). — Koehne, Deutsche Dendr. 135 (1893). — Palibin in Act. 
Hort. Petrop. XIV. 139 (1895). — Mouillefert, Traité Arb. Arbriss. II. 
1 Pallas includes three different forms. His “A. Ulmus pumila Rossiae australis,” 
t. 48, fig. D, Eis U. foliacea Gilibert; * B. Ulmus pumila transbaicalensis" repre- 
sents the true U. pumila with exception of the branch with corky wings (fig. B), 
which apparently belongs to U. japonica, var. levigata Schneider. Pallas did not 
describe a variety transbaicalensis, as Henry, l. c., cites, for “transbaicalensis” is not 
printed in italics and is used only as a geographical term. 
