ULMACEAE. — ZELKOVA 287 
bescence, especially on the veins, beneath; the serration is somewhat pointed as 
in Z. serrata. Meyer also collected what is apparently the same form near Soochow 
in Kiangsu, April 26, 1908 (No. 342), of which he sent seeds to the Department of 
Agriculture in Washington. From these seeds are growing young plants under 
No. 22985 (in part, mixed with Ulmus parvifolia Jacquin) in Chico, California. 
Sterile specimens of these plants before me show the same firm leaves with a 
more or less dense grayish pubescence beneath. The serration is the same as in 
Meyer’s No. 1444 or even sharper. All these plants apparently represent a dis- 
tinct new species which may be distinguished by its firmer leaves, which are more 
or less pubescent beneath at least when young and have a more incumbent 
shorter serration. 
This is a rare tree in the parts of China where I have collected, and is only 
known to me from one locality near the town of Hsing-shan Hsien, where there are 
several trees from 6 to 16 m. tall, with trunks from 0.5 to 2 m. in girth. The 
bark is smooth and pale gray, and exfoliates in small, thin roundish flakes leaving 
behind brown scars. E B: W 
Here may be added the other species from eastern Asia, with which Z. sinica 
has been confused by previous authors. 
Zelkova serrata Makino in Tokyo Bot. Mag. XVII. 13 (1903). 
Corchorus hirtus Thunberg, Fl. Jap. 228 (non Linnaeus) (1784). 
Corchorus serratus Thunberg in Trans. Linn. Soc. II. 335 (1794). 
Ulmus Keaki Siebold in Verh. Bat. Genoot. XII. 28 (Syn. Pl. Oec. Jap.) (1830). 
Planera acuminata Lindley in Gard. Chron. 1862, 428. — Regel in Gartenfl. 
XII. 56 (1863). 
Planera Kaki Kirchner in Petzold & Kirchner, Arb. Musc. 567 (1864). 
Planera japonica Miquel in Ann. Mus. Lugd.-Bat. III. 66 (1867); Prol. Fl. 
Jap. 254 (1867). 
Planera Keaki K. Koch, Dendr. II. pt. 1, 427 (1872). — Graebener in Gartenfl. 
XXXVII. 21, fig. 6-8 (1888). 
Zelkova acuminata Planchon in Compt. Rend. Acad. Paris, LXXIV. 1496 
(1872), fide Maximowiez; in De Candolle, Prodr. XVII. 166 (1873). — 
Hemsley in Jour. Linn. Soc. XXVI. 449 (1894). — Shirasawa in Bull. 
Agric. Coll. Tokyo, YI. 267, t. 13, fig. 14 (Jap. Laubh. Winter. t. 9, fig. 14) 
(1895); Icon. Ess. For. Jap. I. 65, t. 36, fig. 1-17 (1900). — Mouillefert, 
Traité Arb. Arbriss. II. 1206 (1898). — Palibin in Act. Hort. Petrop. XVIII. 
190 (Consp. Fl. Kor. II. 44) (1900). — Henry in Elwes & Henry, Trees Great 
Brit. & Irel. IV. 920, t. 267, fig. 7 (1909). — Bean, Trees & Shrubs Brit. Isl. 
II. 693 (1914). 
Zelkova Keaki Maximowicz in Bull. Acad. Sci. St. Pétersbourg, XVIII. 288 
(1873); in Mél. Biol. IX. 21 (1873). — Franchet & Savatier, Enum. PI. 
Jap. I. 430 (1875). — Mayr, Aus Wald. Jap. 32, 48 (1891); Fremdl. Wald- 
und Parkbäume, 525, fig. 246-249 (1906).— Dippel, Handb. Laubholzk. II. 
40, fig. 15 (1892).— Sargent in Garden & Forest, VI. 323, fig. 49 (1893); 
Forest Fl. Jap. 58, t. 19 (1894). — Koehne, Deutsche Dendr. 137 (1893). — 
Nakai in Jour. Coll. Sci. Tokyo, XXXI. 188 (Fl. Kor. II.) (1911). 
Abelicea acuminata O. Kuntze, Rev. Gen. Pl. II. 621 (1891). 
Abelicea Keaki Schneider, Dendr. Winterst. 238, fig. 166 e-g (1903). 
Abelicea hirta Schneider, Ill. Handb. Laubholzk. 1. 226, fig. 143-144 (1904). 
Zelkova hirta Schneider, 1. c. 806 (1906). 
NORTHEASTERN ASIA. Mandshuria: Mukden, March 11, 1913, F. N. 
eyer (No. 1796"; very useful timber; cultivated in Yarrow Plant. Intro. Field 
