ROSACEAE. — PRUNUS 249 
Acad. Sci. St. Pétersbourg, XXIX. 102; in Mél. Biol. XI. 699 (1883) huc 
forsan pertinet. 
Prunus pseudocerasus shidare-sakura Hort. ex Koehne. 
44 X 88 ? Prunus affini Makino, = Prunus pseudocerasus jamasakura 
X incisa? Makino in Tokyo Bot. Mag. XXII. 99 (1908). 
Japan. 
Unknown to me. I do not think it probable that a hybrid exists between P. 
serrulata Lindley (= P. pseudocerasus jamasakura Makino) and P. incisa. 
45. Prunus Sargentii Rehder in Mitt. Deutsch. Dendr. Ges. XVII. 159 (1908).— 
Koehne in Mitt. Deutsch. Dendr. Ges. XVIII. 164 (1909). — Hutchinson in Bot. Mag. 
CXXXVII. t. 8411 (1911). 
Prunus puddum Miquel in Ann. Mus. Lugd. Bat. II. 90 (pro parte, non Wallich) 
(1865). Vidi in Herb. Leyden. 
Prunus pseudocerasus, var. sachali is F. Schmidt in Mém. Acad. Sci. St. 
Pétersbourg, sér. 7, XII. No. II. 124 (Reis. in Amurland) (1868), verisimile 
hue referenda (exemplaria sunt fructifera). 
Prunus pseudocerasus, a spontanea Maximowiez in Bull. Acad. Sci. St. Péters- 
bourg, XXIX. 102; in Mél. Biol. XI.699 (pro parte) (1883). — Makino in 
Icon. Pl. Jap. 1, t. 1-2 (1900). 
Prunus Mume, var. crasseglandulosa Miquel in Rijks-Herbarium, Leyden (a 
Maximowicz, l. c., ad P. pseudocerasum ducta). 
Prunus pseudocerasus Sargent in Garden and Forest, X. 462, fig. 58 (non 
Lindley) (1897). 
| Prunus “spec. Nordjapan,” Zabel in Beissner, Schelle & Zabel, Handb. Laubholz- 
Ben. 241 (1903). 
Prunus pseudocerasus, B borealis Makino in Tokyo Bot. Mag. XXII. 99 (1908). 
Prunus serrulata, B borealis Makino, 1. c. XXIII. 75 (1909). 
Prunus pseudocerasus, B. spont Koidzumi in T'okyo Bot. Mag. XXIII. 182 
(1909). 
J kura, a elegans, c pta Koidzumi in Tokyo Bot. Mag. XXV. 186 
(1911) ac ejusdem varietatis f. hortensis Koidzumi, 1. c., num huc pertinent? 
P. jamasakura, a borealis Koidzumi, in Tokyo Bot. Mag. XXV. 187 (1911), ac 
ejusdem varietatis f. hortensis, Koidzumi, l. c. 188.1 
Korea, Saghalin, Japan. : 
I have not yet seen specimens from China. Later, probably, several forms will 
have to be distinguished. In flower the living plant is markedly different from 
P. serrulata Lindley, but it is often difficult to refer dried specimens to the one 
Or the other species. Very closely allied to P. Sargentii Rehder is P. tenuiflora 
Koehne, the range of which, however, is so widely separated from that of P. Sar- 
gentii, that it seems better to consider P. tenuiflora for the present as a distinct 
Species. 
46. Prunus tenuiflora Koehne. See p. 209. 
47. Prunus Wildeniana Koehne, n. sp. E 
Ramuli novelli glabri v. basi pilis solitariis conspersa, annotini cani v. cano- 
fuscescentes, vetustiores sordide fusci. Stipulae ignotae; petioli 6-11 mm. longi, 
laxe subaccumbenti-hirtuli v. subglabri, glandulas 1-2 medio v. apice gerentes; 
lamina e basi acuta v. rotundata anguste ovata v. late elliptica v. obovata, 6-8.5 
cm. longa, 3-4.2 cm. lata, caudato-acuminata, argute, hinc inde duplicato-serrata, 
Where P. jamasakura, 8. verecunda Koidzumi in Tokyo Bot. Mag. XXV. 188 
(1911) ‘‘umbellis sessilibus, pedicellis calycibusque puberulis, foliis petiolisque 
pilosis demum subtus glabriusculis" can belong, I have not yet ascertained. 
