ROSACE AE . — PRUNUS 215 



Prunus Ilerincquiana Schneider, Ill.Handb. Laubholzk. I. 608 (pro parte) (1906). 



Prunus itosakura Makino in Tokyo Bot. Mag. XXII. 114 (1908), quoad syno- 

 nymuni 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. GOO-1000 m., 

 April and June 1907 (No. 2833; tree 10-13 m. high). 



Korea, woods of Hallaisan, May 1909, Taqiiet (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, Tschonoski (in the Rijks-Herbarium, Leyden, designated 

 as P. ohlongifolia Maximowicz); cultivated at Tokyo, April 9, 1874, 

 Hilgendorf (mixed with P. serrulata Kriegeri) ; Hirosaki, May 28, 1905, 

 U. Faurie (No. 6698) ; without locality, Siehold (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 locaUty, 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, 

 circ. 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 profunda 

 duplicato-, basi apiceque simpliciter serrata, dentibus multis bi- v. tri- 

 fidis acuminatis, glandula sat valida conica terminatis, supra sparsim 

 strigulosa, subtus aequaliter laxe pilis nitiduhs obsita, nervis utrin- 

 secus circa 10, subtus baud pallidior. Involucra circa 7-8 mm. longa; 

 pedunculus 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, subeuphylloidcae, involucrum 



