BETULACEAE. BETULA 455 



forms like Wilson's No. 7311 with var. mandshurica which otherwise has a different 

 geographical range, and in the extreme forms both varieties look very distinct. 



BETULA L. 



Betula luminifera Winkler in Engler, Pflanzenr. IV.-61, 91, fig. 

 23 a-c (1904). — Schneider, ///. Handh. Laubholzk. II. 882, fig. 552 d, 

 553 g-h (1912). 



Betula acuminata Franchet in Jotir. de Bot. Xlll. 207 (1899), quoad specim. 



Fargesii. 

 Betula acuminata, var. pyrifolia Franchet, 1. c. (1899). 

 Betula alnoides Burkill in Jour. Linn. Soc. XXVI. 497 (non Hamilton) (1899), 



quoad specim. Fargesii. — Diels in Bot. Jahrb. XXIX. 281 (1900). 

 Betula alnoides, var. pyrifolia Burkill in Jour. Linn. Soc. XXVI. 497 (1899), 



exclud. specim. Delavayi. — Diels in Bot. Jahrb. XXIX. 281 (1900), exclud. 



specim. Delavayi. — Bean, Trees & Shrubs Brit. Isl. I. 256 (1914). 

 Betida cylindrostachys Diels in Bot. Jahrb. XXIX. 281 (1900). 

 Betula cylindrostachys, var. resinosa Diels, 1. c. 282. 

 Betula Wilsoniayia Schneider, III. Handb. Laubholzk. II. 882, fig. 552 a, 553 a-b 



(1912). 

 Betula hupehensis Schneider, 1. c. 882, fig. 552 b, 553 c-d (1912). 



Western Hupeh: Hsing-shan Hsien, alt. 700-1700 m., June 12, 

 1907 (No. 17; tree 8-17 m. tall, girth 0.3-0.9 m., bark dark, smooth; 

 fruits); same locality, alt. 1000-1300 m., woods, May 1907 (No. 85''; 

 tree 10-17 m. tall, girth 0.3-1.5 m.; flowers; No. Ss''; sterile); same 

 locality, alt. 1000-1700 m., woods, July 1907 (No. 94; tree 7-13 m. tall, 

 girth 0.6-1.5 m., bark dull orange red, fruits); same locality, wood- 

 lands, alt. 900m., May 16, 1907 (No. 3371^; tree 10 m. tall, girth 0.6 m.; 

 flowers and bark); Fang Hsien, alt. 1000-2000 m., woodlands, com- 

 mon, May 26, 1907 (No. 3369; tree 13-20 m. tall, girth 1.5-2.1 m.; 

 fruits); same locality, alt. 700-2300 m., woodlands, abundant. May 15, 

 1907 (No. 3370; tree 7-17 m. tall, gu-th 0.6-1.8 m.; flowers; No. 

 3370=*; sterile); same locality, April 1901 (Veitch Exped. No. 841*; 

 flowers); same locality, June 1900 (Veitch Exped. No. 1889''; flowers; 

 same locality, June 1901 (Veitch Exped. No. 2800, type of B. hupe- 

 hensis); Patung Hsien, alt. 1000-1700 m., woods and thickets, July 

 1909 (No. 85; tree 10-17 m. tall, girth 0.3-0.9 m.; fruits); same 

 locality, woods, May 1907 (No. 94''; tree 7-13 m. tall, girth 0.6-1.5 

 m.; young fruits); north and south of Ichang, alt. 700-1500 m., 

 woodlands abundant, November 1907 (No. 162; tree 7-20 m. tall, 

 girth 0.6-2.1 m.; fruits); same locaUty, April 1907 (No. 162*; small 

 thin tree, 3-13 m. tall, girth 0.3-1.5 m.; flowers); same locality, April 



