ACERACEAE. ACER 97 



Sect. LITHOCARPA Pax 



Acer Franchetii Pax in Hooker's Icon. XIX. text to t. 1897 (1889). 



Western Hupeh: north and south of Ichang, abundant, alt. 

 1400-1800 m., October 1907 (No. 337, in part); Patung Hsien, woods, 

 alt. 1200-1800 m., May and October 1907 (No. 337, in part); Chang- 

 lo Hsien, alt. 1200-1800 m., May 1907 (No. 337, in part); Fang Hsien, 

 woods, common, alt. 1500-1800 m., May, July and November 1907 

 (Nos. 337, in part, 1888); South Wushan, woods, alt. 1200-1800 m., 

 May 1907 (No. 337, in part) ; Hsing-shan Hsien, woods, common, alt. 

 1500-1800 m., May, June and November 1907 (No. 337, in part). 

 Western Szech'uan: Chiu-ting-shan, woods, alt. 1500 m., May 

 1908 (No. 337, in part). 



Sect. TRIFOLIATA Pax 



Acer Henryi Pax in Hooker's Icon. XIX. text to t. 1896 (1889). 



Western Hupeh: Fang Hsien, woods, common, alt. 1500-1800 m., 

 May and June 1907 (No. 424, in part) ; Chang-yang Hsien, alt. 1200- 

 1800 m., May and June 1907 (No. 424, in part); Patung Hsien, alt. 

 1200-1800 m., May 1907 (No. 424, in part) ; north and south of Ichang, 

 woods, abundant, alt. 1000-1800 m., May 1907 (No. 424, in part); 

 Hsing-shan Hsien, woods, alt. 1700-1800 m., May 11 and November 

 1907 (Nos. 424, in part, 424 a ). 



The form which has the leaflets always coarsely toothed has been distinguished 

 as A. Henryi, var. serratum Pampanini in Nuov. Giorn. Bot. Ital. n. ser. XVII. 421 

 (1910). 



Acer sutchuense Franchet in Jour, de Bot. VIII. 294 (1894). 



Western Hupeh: Fang Hsien, woods, rare, alt. 1800-2100 m., 

 May and June 1907 (Nos. 1886, 1887) ; southeast of Sungpan, woods, 

 alt. 2400-2700 m., August 1910 (No. 1886, in part). 



Acer griseum Pax in Engler, Pflanzenreich, Heft 8 (IV. 163), 30 

 (1902). 



Acer nikoense, var. griseum Franchet in Jour, de Bot. VIII. 294 (1894). 



Western Hupeh: Hsing-shan Hsien, woods, not common, alt. 

 1200-1700 m., May 14, October and November 1907 (No. 340). 



The bark is dark cinnamon-brown, peeling off in thin flakes like that of Betula 

 nigra, L. 



