ROSACE AE. — PRUNUS 249 



Acad. Sci. St. Pitersbourg, XXIX. 102; in Md. Biol. XI. 699 (1883) hue 

 forsan pertinet. 

 Prunus pseudocerasus shidare-sakura Hort. ex Koehne. 

 44 X 88 ? Prunus affinis 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 Milt. Deutsch. Dendr. Ges. XVII. 159 (1908).— 

 Koehne in Mitt. Deutsch. Dendr. Ges. XVIII. 164 (1909). — Hutchinson in Boi. Mag. 

 CXXXVII. t. 8411 (1911). 



Prunus puddum Miquel in Ann. Mus. Lugd. Bat. II. 90 (pro parte, non WaUich) 



(1865). Vidi in Herb. Leyden. 

 Prunus pseudocerasus, var. sachalinensis F. Schmidt in Mem. Acad. Sci. St. 



Petersbourg, 86t. 7, XII. No. II. 124 (Reis. in Amurland) (1868), verisimile 



hue referenda (exemplaria sunt fructifera). 

 Prunus pseudocerasus, a spontanea Maximowicz in Bull. Acad. Sci. St. Peters- 

 bourg, XXIX. 102; in Mel. Biol. XI. 699 (pro parte) (1883). — Makino in 



Icon. PI. Jap. 1, t. 1-2 (1900). 

 Prunus Mume, var. crasseglandulosa Miquel in Rijks-Herbarium, Leyden (a 



Maximowicz, 1. 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, ^ borealis Makino in Tokyo Bot. Mag. XXII. 99 (1908). 

 Prunus serridata, ^ borealis Makino, 1. c. XXIII. 75 (1909). 

 Prunus pseudocerasus, /3 spontanea Koidzumi in Tokyo Bot. Mag. XXIII. 182 



(1909). 

 P. jamasakura, a elegans, c compta Koidzumi in Tokyo Bot. Mag. XXV. 186 



(1911) ac ejusdem varietatis f. hortensis Koidzumi, 1. c, num hue pertinent? 

 P . jamasakura, a borealis Koidzumi, in Tokyo Bot. Mag. XXV. 187 (1911), ac 



ejusdem varietatis f. hortensis, Koidzumi, 1. c. 188.^ 



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 aUied 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. 



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-^.2 cm. lata, caudato-acuminata, argute, hinc inde duphcato-serrata, 



* Where P. jamasakura, S. verecunda Koidzumi in Tokyo Bot. Mag. XXV. 188 

 (1911) "umbefiis sessilibus, pedicefiis calycibusque puberulis, foliis petiolisque 

 pilosis demum subtus glabriusculis " can belong, I have not yet ascertained. 



