286 WILSON EXPEDITION TO CHINA 



ZELKOVA Spach. 



Zelkova sinica Schneider, n. sp. 



Planer a japonica Hemsley in Jour. Bot. XIV. 209 (non Miquel) (1876). 

 Zelkova acuminata Hemsley in Jour. Linn. Soc. XXVI. 449 (pro parte, non 



Planchon) (1894). — Diels in Bot. Jahrh. XXXVI. Beibl. LXXXII. 33 



(1905). 



Arbor ad 17 m. alta, trunco cortice levi pro genere normali obtecto; 

 ramuli hornotini dense breviter villosuli v. pro parte glabri, brunnes- 

 centes, lenticellis satis magnis discoloribus conspersi, annotini cinereo- 

 rubiginosi, glabri, vetustiores cinerascentes. Folia satis parva, adulta 

 firma, ovato-oblonga, basi vix v. paulo inaequali subrotunda v. late 

 cuneata, apicem versus satis sensim acuminata, interdum fere brevi- 

 ter caudata, supra satis viridia, tantum in costa impressa nervisque 

 plus minusve sparse pilosula, subtus in sicco cinerascentia (v. paulo 

 brunnescentia), saepissime tantum in axillis nervorum lateralium utrin- 

 secus 7-9 (imo apice excepto) paulo prominentium albo-barbata, 

 ceterum glabra v. pilis sparsis difficile recognoscendis praedita, mar- 

 gine regulariter et breviter crenato-serrata serraturis non v. vix 

 apiculatis, 1.5-4.8 cm. longa et 0.8-2.3 cm. lata; petioli 1-4 mm. 

 longi, villosuli. Flores ignoti. Fructus maturi singuli, axillares, 

 irregulariter obovato-rhomboidei, glabri (v. sparse pilosuli), circiter 

 5 mm. longi et crassi, basi perigonio 5 lobato persistente suffulti, apice 

 stigmatibus 2 incurvis coronati; pedicelli brevissimi, pilosi. 



Western Hupeh: Hsing-shan Hsien, roadside, alt. 900 m., Octo- 

 ber 1907 (No. 2699, type; tree 7-17 m. tall, girth 0.35-1.8 m.; with 

 ripe fruits and bark); same locality, etc., July 1907 (No. 2699^; with 

 unripe fruits). Northern Shensi: " Kian-san," August 8, 1897, 

 J. Giraldi (with fruits); '' Lao-y-san," 1897, J. Giraldi (sterile; leaves 

 up to 6.3 cm. long and 2.5 cm. wide, petioles up to 8 mm. long). 

 Chekiang: Ningpo, E. Faber (mature leaves as in the type, but 

 loosely pubescent beneath). Kiangsu; Shanghai, E. Faher (younger 

 leaves with a soft pubescence beneath, young fruits hairy). 



The specimens enumerated above agree well with each other in their small leaves 

 with a short crenate serration. The pubescence of Faber's specimens is, so far as I 

 can see, due to a younger condition of the leaves. In F. N. Meyer's specimens 

 mentioned below the leaves are mostly larger and have a distinctly apiculate ser- 

 ration, their texture and nervation being somewhat different too. There is a 

 sterile specimen collected by him in Kiangsu, Spirit Valley, near Nanking, June 

 4, 1915 (No. 1444; at edges of forest in rich soil), the leaves of which are up to 

 9.5 cm. long and 4.5 cm. wide. They are rough above and bear a distinct pu- 



