ROSACEAE. — PRUNUS 259 
Ser. 4. EUCERASEIDOS, n. ser. 
89. Prunus caudata Franchet, Pl. Delavay. 196 (1889). 
Yunnan: woods near the hill of Yen-tze-hay, above Lan-kong, May 24, 1887, 
M. J. Delavay (No. 2658). 
90. Prunus iwagiensis Koehne, n. sp. 
Rami annotini glabri. Stipulae angustissime lineares, ad 6 mm. longae, margine 
glandulosae; petioli cirea 6 mm. longi, glabri, glandulas 1-2 apice gerentes; 
lamina e basi rotundata suborbicularia v. obovata, ad 2.5 cm. longa (sub anthesi), 
caudata, inciso-duplicato-serrata, dentibus primariis manifeste longioribus quam 
latis, medio saepe subdilatatis, secundariis subangustis, obtusiusculis subcuspidatis, 
glandula capitata terminatis, supra sparsim pilosa, subtus in nervis venisque 
validioribus parce v. uberius hirta. Involucra 6-9 mm. longa; pedunculus nullus; 
flores 1-2 umbellati, coaetanei; bracteae interdum subexsertae, herbaceae; pedi- 
celli 11-15 mm. longi, glabri; cupula 5-6 mm. longa, subanguste turbinata, glabra; 
sepala erecto-patula, ovata acuminata, 4-5 mm. longa, integra v. subintegra, 
glabra; petala rotundata, 10 mm. longa 9 mm. lata, vix emarginata; stamina 
32-35, petalis dimidio breviora, ad 5.5 mm. longa; stylus glaber. 
Hondo: woods of Iwagi, May 13, 1905, U. Faurie (No. 6699). 
n Prunus iwagiensis differs from all the Japanese species of the group Euceraseidos 
in the turbinate cupula, and from most of them also in the rather large petals. 
91. Prunus nipponica Matsumura in Tokyo Bot. Mag. XV. 99 (1901). 
Prunus Miqueliana Koidzumi in Tokyo Bot. Mag. XXIII. 184 (non Maxi- 
mowiez) (1909). 
Prunus Ceraseidos Maximowicz in Bull. Acad. Sci. St. Pétersbourg, XXIX. 103; 
in Mél. Biol. XI. 698 (pro parte) (1883). 
Prunus apetala, typica Schneider, Ill. Handb. Laubholzk. Y. 608 (1906), huc 
pertinere videtur. 
Japan: Nikko, June 12, 1901, Matsumura (sent to me as P. Miqueliana); 
Nikko, Simotsuke, June 12, 1901, Yabe (sent to me as “P. Miqueliana = P. nip- 
ponica"); Nikko, Konseitoge, July 22, 1883, Matsumura (sent as P. Migueliana); 
Owatesan, Rikuchu, June 26, 1907, Nakahara; province Echigo, August 1905, H. 
Shirasawa (sent as P. Miqueliana); woods of Takayu, June 24, 1904, 
U. Faurie (No. 6052); Fusi-San, 1864, T'schonoski (as P. ceraseidos, var. glabrata 
Maximowiez; other specimens from T'schonoski belong to the very different P. 
Tschonoskii Koehne); Ontake, 3000 m. alt., July 1875, J. J. Rein. : 
This species differs from all other species of the group Ceraseidos in the bifid 
petals; they are 10-11 mm. long, 4-5 mm. broad; the very narrow incision is 
3 mm. deep and the two lobes are acute. 
92. Prunus autumnalis Koehne, n. sp. 
Prunus subhirtella, var. autumnalis Makino in Tokyo Bot. Mag. XXII. 117 
(1908) ex descriptione eadem videtur quae species mea, sed flores dicuntur 
plus minus pleni rosei. 
Rami annotini glabri, tenues, ochraceo-fuscescentes v. cani; gemmae 3-4 mm. 
longae, nitidae. Stipulae mihi ignotae; petioli circa 9 mm. longi, dense hirti, glan- 
dulas 2 validas gerentes; lamina e basi late cuneata ovato-oblonga, oblonga v. 
oblongo-lanceolata, 3.4-5.7 em. longa, 1.2-2.3 cm. lata, sensim acuminata, inciso- 
duplicato-serrata, dentibus vix acuminatis, glandula capitata terminatis, supra 
Dilis conspersa, subtus in nervis densiuscule ceterum sparsim pilosa, nervis utrin- 
secus 7-8. Involuera 4 mm. longa, 3 mm. lata; pedunculus nullus; bracteae in- 
