502 WILSON EXPEDITION TO CHINA 



A. nitida. — Regel in 5wH. Soc. Nat. Mosc. XXXVIII. pt. 2, 421 (1865), 

 excl. A. nitida. — PrantI in Engler & Prantl, Nat. Pflanzenfam. III. abt. 

 1, 45 (1887), excl. A. nitida. — Callier apud Schneider, III. Handb. Laub- 

 holzk. 11. 889 (1912), excl. A. nitida. 

 Ahius, sect. Alnaster Regel in Nouv. Mem. Soc. Nat. Mosc. XIll. 133 (Monog. 

 Betulac. 75) (pro parte) (1861), quoad A. napalensem. 



1 refer to this group only A. nepalensis D. Don because it differs from A. 

 nitida Endlicher and also from the other species placed under sect. Gymnothyrsus 

 by its numerous handsome paniculate clusters of male catkins and by its seeds, 

 which have the same kind of wings as the species in the subgen. Alnaster and the 

 subgen. Cremastogyne. Besides it differs from A. nitida D. Don in its paniculate 

 female catkins and in the papillose under side of the leaves. 



12. Alnus nepalensis D. Don, Prodr. Fl. Nepal. 58 (1825). — Endhcher, Gen. 

 Suppl. IV. pt. 2, 20 (1847). — Regel in Btdl. Soc. Nat. Mosc. XXXVllI. pt. 2, 

 421 (1865); in De Candolle, Prodr. XVI. pt. 2, 181 (1868). — Brandis, Forest Fl. 

 Brit. Ind. 460 (1874); Ind. Trees, 623 (1906). — Kurz, Forest Fl. S. Ind. II. 476 

 (1877). — Hooker f., Fl. Brit. Ind. V. 600 (1888). — Sargent, Silva N. Am. IX. 70, 

 inadnot. (1896). — Mouillefert, Traite Arb. & Arbriss. II. 1133 (1897).— Franchet 

 in Jour, de Bot. XIII. 208 (1899). — Burkill in Jour. Linn. Soc. XXVI. 500 

 (1899). — Collett, Fl. Siml. 473 (1902). — Gamble, Man. Ind. Timb. 670 (1902).— 

 Winkler in Engler, Pflanzenr. IV.-61, 108, fig. 25 (1904). — CaUier apud Schneider, 

 III. Handb. Laubholzk. II. 889, fig. 555 g, 556 d-f (1912). — Diels in Not. Bot. 

 Gard. Edinburgh, VII. 41 (PI. Chin. Forrest.) (1912). 



Betula Boshia Hamilton ex D. Don, Prodr. Fl. Nepal. 58 (pro synon.) (1825). 

 Betula leptostachya Wallich Herb. 1824 ex Wallich, Cat. No. 2799 (1828). 

 Alnus napalensis WalHch, PI. As. Rar. II. 27, t. 131 (1831). — Regel in Nouv. 

 Mem. Soc. Nat. Mosc. XIII. pt. 2, 141, t. 13, fig. 40-43, t. 16, fig. 4-6 (1861). 

 Clethropsis nepalensis Spach in Ann. Sci. Nat. ser. 2, XV. 202 (1841). 



CHINA. Yunnan: Mengtsze, south of Red River, alt. 1200-1500 m., 

 forming woods, A. Henry (No. 9223, in part; trees 5-10 m. tall; fruits); same 

 locality, on mountains, forming woods, alt. 1500-1800 m., A. Henry (No. 9223 

 in part; trees 3-7 m. tall). For further specimens see Burkill, 1. c, and Fran- 

 chet, 1. c. 



INDIA. Kumaon : "common at alt. 4-8000 ft.," Strachey & Winterbottom 

 (flowers and fruits). Gurhwal: Gaurikund via Trijugi Narain and Maser-td,l 

 to Bilung, September 24 to October 3, 1855, Schlagintweit (No. 9372; flowers); 

 without special locahty, alt. 1000 ft., 1886, H. Mayr (tree; fruits); Nepal: " ad 

 Narainhetty," December, F. Hamilton (sub nom. Betula Boshia; tj^pe, ex D. Don); 

 without special locality, " in montibus," 1824, N. Wallich (No. 2799, sub nom. 

 Betula leptostachya). Sikkim: " regio temp. 5-8000 ped.," J. D. Hooker (young 

 flowers and fruits); Darjeehng, Ryang, alt. 1500 ft., November 12, 1870, C. B. 

 Clarke (No. 13693; flowers); Yoksun, alt. 3500 ft., October 9, 1875, C. B. Clarke 

 (Nos. 25151^ 25151*>; flowers); Lingcham, alt. 5000 ft., October 22, 1875, C. B. 

 Clarke (No. 25479; sterile); Mongpo, alt. 5000 ft., October 10, 1884, C. B. Clarke 

 (No. 36465*^; flowers); " Sikkim superior," May 1885, Pantling (No. 46331^ Herb. 

 Clarke; fruits). Eastern Bengal: without locahty (No. 4490 Herb. Griffith; 

 fruits and flowers). Assam: without locality, 1891 Dr. King's collector (flowers 

 and fruits). 



This species is abundant in southwestern Yunnan in dry woods, often forming 

 pure stands; it also occurs as an undergrowth in Pine woods. E. H. W. 



