252 WILSON EXPEDITION TO CHINA 



Chili: Weichang, 1910, W. Purdom (No. 29; bush 1.5-2.5 m. tall). Korea: 

 "in monte des diamants," June 22, 1906, U. Faurie (No. 500); " in dumosis," 

 Seoul, June 1906, U. Faurie (No. 503). 



This species is most nearly related to the European R. catharticus Linnaeus, 

 but there are some forms from eastern Siberia which are difficult to determine. 

 They may represent varieties of both these species. 



Whether R. dahuricus, var. nipponicus Makino in Tokyo Bat. Mag. XVIII. 98 

 (1904) from middle and northern Japan, where it is said to be common, represents 

 a good variety or even a different species, I cannot decide. 



36. Rhamnus iteinophyllus Schneider. See p. 239. 



37. Rhamnus hamatidens L^veille in Fedde, Rep. Sp. Nov. X. 473 (1912). 

 Kweichou: Pin Fa, April 15, 1903, J. Cavalerie (No. 992). 



The type specimen, which I have seen, consists only of young shoots with female 

 flowers. The leaves very much resemble those of a peach or a willow. They are 

 very smooth and only a little pilose on the midrib above and on the short 3-4 mm. 

 long petioles. They measure up to 11 cm. in length and 2.7 cm. in width and have 

 a somewhat irregular serration with appressed rather distant teeth. The base is 

 acute and the apex runs into a long and slender acumen. The glabrous shoots are 

 round and quite smooth. The stamens of the pistillate flowers are very much 

 reduced to filiform staminodes; the petals are wanting. It may be a very distinct 

 species, the relationship of which cannot be indicated before the mature leaves 

 and fruits are known. 



38. Rhamnus lamprophyllus Schneider in Notizhl. Bat. Gart. Berlin, 1908, 

 78; III. Handb. Laubholzk. II. 289, fig. 198 1-m, 199 g (1909). 



Hupeh: A. Henry (No. 6504). 



I have not yet seen any other specimen which I could surely refer to this species. 



39. Rhamnus utilis Decaisne. See p. 240. 



40. Rhamnus Wilsonii Schneider. See p. 240. 



41. Rhamnus hypochrysus Schneider in Notizhl. Bot. Gart. Berlin, 1908, 76; 

 III. Handb. Laubholzk. II. 290, fig. 198 p-q, 199 o-q (1909). 



Szech'uan: A. von Rosthorn (No. 1585). Northern Shensi: G. Giraldi 

 (Nos. 931, 932, 940). 



HOVENIA Thunb. 



Hovenia dtilcis Thunberg, Fl. Jap. 101 (1784). — Hemsley in Jour. 

 Linn. Soc. XXIII. 131 (1886), excludendo synonymo. — Schneider, 

 III. Handb. Laubholzk. II. 291, fig. 200, 201'* (1909). — Pampanini in 

 Nuov. Giorn. Bot. Ital. n. ser. XVII. 425 (1910). 



Western Hupeh: neighbourhood of Ichang, alt. 300-1000 m., 

 common, June 1907 (No. 2429; tree 10-20 m. tall, girth 1-2.5 m., 

 flowers white); Patung Hsien, June 1900 (Veitch Exped. No. 

 1191, in part). Eastern Szech'uan: Wushan Hsien, July 1901 

 (Veitch Exped. No. 1191, in part). Western Szech'uan: Mon- 

 kong Ting, alt. 1600 m., June 30, 1908 (No. 2429"; tree 8-20 m. tall, 

 girth 1-2.5 m.); without locahty, A. von Rosthorn (No. 1898). 



