ROSACEAE. — PRUNUS 215 
Prunus Herincquiana Schneider, Ill. Handb. Laubholzk. Y. 608 (pro parte) (1906). 
Prunus itosakura Makino in Tokyo Bot. Mag. XXII. 114 (1908), quoad syno- 
nymum Prunus Herincquiana. 
Prunus Itosakura, var. ascendens Makino in Tokyo Bot. Mag. XXII. 114 (1908), 
an hue pertinet? ‘‘ Veins 9-20 on each side of the leaf." Prunus itosakra, 
y ascendens Koidzumi in Tokyo Bot. Mag. XXIII. 181 (1909), est eadem. 
Western Hupeh: Patung Hsien, alt. 1800 m., April 25, 1900 
(Veitch Exped. No. 93); Changyang Hsien, mountain sides, April 
4, 1900 (Veitch Exped. No. 70); mountain sides, alt. 600-1000 m., 
April and June 1907 (No. 2833; tree 10-13 m. high). 
Korea, woods of Hallaisan, May 1909, Taquet (No. 2876); July 
1909, Taquet (No. 2875); Quelpaert, “in pago Hokeuni," May 5, 
1908, Taquet (No. 786); Quelpaert prope Hongno, July 1907, U. Faurie 
(No. 1546). 
Japan: Provinces of Senano and Nambu, a. 1864, Tschonoski (Max- 
imowicz, iter II, specimen of P. pendula Maximowicz); Hondo, Ha- 
kone, a. 1864, T'schonoski (in the Rijks-Herbarium, Leyden, designated 
as P. oblongifolia Maximowicz); cultivated at Tokyo, April 9, 1874, 
Hilgendorf (mixed with P. serrulata Kriegeri); Hirosaki, May 28, 1905, 
U. Faurie (No. 6698); without locality, Siebold (in the Leyden Herba- 
rium, specimen of P. subhirtella Miquel mixed with true P. subhirtella). 
Prunus canescens Bois in Vilmorin & Bois, Frut. Vilmorin. 66, 2 
fig. (1904). — Koehne in Mitt. Deutsch. Dendr. Ges. XVIII. 177 (1909). 
Western Hupeh: Hsing-shan Hsien, cliffs, etc., alt. 1000 m., June 
1907 (No. 65); without locality, April 1901 (Veitch Exped. No. 1862). 
Prunus droseracea Koehne, n. sp. 
Arbor 5-metralis, truncus 20 cm. diam.; ramuli novelli pilis paucis- 
simis longis conspersi, vetustiores glabri, cani. Stipulae lanceolatae, 
cire. 8 mm. longae, fimbriato-serratae, fimbriis glandula longa conica 
V. Cylindracea terminatis, petioli 6-13 mm. longi, glabri; lamina e 
basi emarginata v. rotundata ovata v. obovata 2-5 cm. longa 1.3-2.5 
cm. lata (sub anthesi), subito longe anguste acuminata, medio profunde 
duplicato-, basi apiceque simpliciter serrata, dentibus multis bi- v. tri- 
fidis acuminatis, glandula sat valida conica terminatis, supra sparsim 
strigulosa, subtus aequaliter laxe pilis nitidulis obsita, nervis utrin- 
secus cirea 10, subtus haud pallidior. Involucra cirea 7-8 mm. longa; 
peduneulus 2-12 mm. longus, glaber; flores 2-4 subracemoso-umbellati 
V. umbellati, coaetanei; bracteae rotundatae v. ovatae, 4-8 mm. longae, 
insigniter fimbriato-serratae, dentibus glandula valida oblonga v. conica 
terminatis (infimae saepe steriles, subeuphylloideae, involucrum 
