246 WILSON EXPEDITION TO CHINA 
Cerasus Sieboldtii Carriére in Rev. Hort. 1866, 371. 
Prunus Sieboldii Wittmack in Gartenfl. LI. 272 (1902). 
Prunus pseudocerasus, y serrulata, subvar. Sieboldtii Makino in Tokyo Bot. Mag. 
XXII. 102 (1908)?, excludenda certe var. albida Makino. 
Prunus serrulata, a serrulata, f. Sieboldtii Makino in Tokyo Bot. Mag. XXIII. 
74 (1909). 
Prunus pseudocerasus, var. typica, subvar. Sieboldii Koidzumi in Tokyo Bot. 
Mag. XXIII. 182 (1909). 
P. Pseudocerasus flore roseo pleno Hort. ex Koehne. 
P. Pseudocerasus naden Hort. ex Koehne. 
Known only with double flowers. 
Introduced from China, 1819, by Samuel Brookes (Ker); 1822, by Reeves under 
the name of Yung-to (Lindley); from Japan by Fortune, distributed by Standish as 
Double Japanese Cherry; exhibited by Siebold as Cerasus pseudo Cerasus rosea 
plena (Carriére). : 
Cultivated because of its flowers in the gardens of Chifu, prov. Shantung; near 
the hill of Nan-shan, April 4, 1898, collected by T. Takagaki (No. 672), as indicated 
by Matsumurain Tokyo Bot. Mag. XIV. 137 (1900). I have seen cultivated specimens 
from Japan in Rijks-Herbarium, Leyden, Siebold (designated as P. donarium Sie- 
bold, flowering twigs, mixed with leafy twigs of P. parvifolia), from Yedo, April 
14, 1876, Hilgendorf (mixed with P. serrulata). Japanese name, as given by 
Koidzumi, Yugatzu Sakra. 
Prunus pseudocerasus, forma Watereri Koehne, 1. c. 172 (1909). 
An Cerasus Wattererii, cited by Lavallée, Icon. Arb. Segrez. 119 (1885), as 
synonym under Cerasus Pseudocerasus? 
An Cerasus Watereri Goldring in Garden, XXXIII. 416, fig. p. 420 (1888)? 
An Prunus serrulata, a serrulata, f. Wattererii Makino in Tokyo Bot. Mag. 
XXIII. 75 (1909)? 
Cultivated in European gardens. 
Prunus pseudocerasus, forma virescens Koehne, n. forma. 
Prunus donarium Siebold in Rijks-Herbarium, Leyden, (pro parte, rami florentes, 
mixti cum ramis foliatis P. parvifoliae). 
Petala cire. 20, ad 9 mm. longa, 6 mm. lata, bilobo-emarginata, viridescentia 
(secundum v. Siebold); stamina circiter 40, ad 7 mm. longa. : 
E Japan, v. Siebold. — See also P. serrulata, f. grandiflora Wagner with greenish 
lowers. 
43. Prunus paracerasus Koehne in Fedde, Rep. Nov. Sp. VII. 133 (1909); in Mitt. 
Deutsch. Dendr. Ges. XVIII. 170 (1909). 
Introduced from Japan. Spontaneous specimens so far not seen. 
44. Prunus serrulata Lindley in Trans. Hort. Soc. London, VII. 138 (1830). — 
Koehne in Mitt. Deutsch. Dendr. Ges. XVIII. 166 (1909) cum descriptione fusa. 
Prunus Cerasus, B flore simplici Thunberg, Fl. Jap. 201 (1784) 
Prunus donarium Siebold in Verh. Batav. Genoot. XII. No. I. 68 (Syn. Pl. 
Oecon.) (1827), secundum Maximowicz, sed cf. supra sub P. pseudoceraso. 
Prunus jamasakura Siebold, 1. c. (1827), secundum Lavallée. 
Cerasus serrulata G. Don in Loudon, Hort. Brit. 480 (1830). 
1 According to a photograph of the authentic specimen sent by Professor O. Juel. 
