BETULACEAE. 



Determined by Camillo Schneidee, 



OSTRYOPSIS Decne. 



1. Ostryopsis Davidiana Decaisne in Bull. Soc, Bot. FrancCj XX. 155 

 (1873). — Hance in Jour, Bot XIII. 137 (1875). — Lavallee, Arb, 

 Segrez. 5, t. 3 (1880). — Maximowicz in Mel Biol. XL 316 (1881); in 

 Bull Acad. Sd. SL Petersbourg, XXVII. 535 (1882). — Dippel, Handb. 

 Lauhholzk. II. 136, fig. 65 (1892). — Palibin in Act Hort. Petrop. XIV, 

 140 (1895). — Burkill in Jour, Linn, Soc, XXVI. 502 (1899), 

 Schneider, III Handb, LaubholzL I. 143, fig. 75 f-n, 76 s (1904). 

 Winkler in Engler, Pflanzenr. IV.-61, 20, fig. 5 (1904). — Bean, Trees 

 & Shrubs Brit IsL II. 116 (1914). 



Corylus Davidiana Baillon, Hist. PI VI. 224, fig. 174 (1877). — Franchet in 

 Nouv. Arch. Mus. Paris, s^r. 2, VII. 88 {PL David. I. 278) (1884). 



Western Szech'uan: Mao-chou, cliffs and dry places, Min River 

 valley, alt. 1800-2300 m., August 28, 1910 (No. 4470; bush 1.2-3 m. 

 tall; fruits). Chili : Hsiao Wu-tai-shan, alt. ICOO m., August 8, 1913, 

 F. N, Meyer (No. 1125; fruits); Cal-ceen-wong, 1910, W. Purdom (No. 

 69; fruits); Jehol, A. David (No. 1694; type, ex Decaisne). 



Here may be added notes on two Ostryopsis of which I have not seen specimens: 



Ostryopsis Davidiana, var. cinerascens Franchet in Bull. Soc. Bot. Francef 

 XXXII. 27 (1885). — Burkill in Jour. Linn. Soc. XXVI. 503 (1899). 



Yunnan: "in coUibus calcareis ad Mosoyn prope Lankong," June 1, 1884, 

 A. Delavay (T!:;o. 37, type, ex Franchet; No. 830, ex Burkill). 



This variety is said to differ from the type in its broader ovate-rotundate leaves, 

 which are more thickly covered beneath with a shining silky pubescence. The 

 branchlets also are more pilose and glandular. It is said to be a very small bush, 

 0.6 m. high. Winkler (in Engler, PJlanzenr. IV.-61. 20 [1904]) does not mention 

 this variety, but cites under the type a specimen from Yunnan, A. Delavay (No, 

 1066), without any special locaHty. 



2. Ostryopsis nobilis Balfour & Smith in Not. Bot. Card, Edinburgh, VIII. 19-1 

 (1914). 



Yunnan: in open thickets on the mountains to the northeast of the Yangtsze 

 Bend, lat. 27° 45' N., alt. 3100-3400 m., June 1913, G. Forrest (No. 10343, t>'pe; 

 shrub 2-4 m.; fruits). 



This interesting species according to the authors differs from 0. Davidiana De- 

 caisne by its much larger leaves (6-12 cm. long, 5-10 cm. broad), which are covered 



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