EOS ACE AE . — PRUNUS 259 



Ser. 4. EucERASEiDos, n. ser. 



89. Prunus caudata Franchet, PI. Delavmj. 196 (1889). 



Yunnan: woods near the hill of Yen-tze-hay, above Lan-kong, May 24, 1887, 

 M. J. Delavay (No. 2G58). 



90. Prunus iwagiensis Koehne, n. sp. 



Rami annotini glabri. Stipulae angustissime lineares, ad 6 mm. longae, margine 

 glandulosae; petioli circa 6 mm. longi, glabri, glandulas 1-2 apice gerente.s; 

 lamina e basi rotundata suborbicularia v. obovata, ad 2.5 cm. longa (sub anthesi), 

 caudata, inciso-duplicato-serrata, dentibus primariis manifesto 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- 

 celU 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). 



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 Maxl- 



mowicz) (1909). 

 Prunus Ceraseidos Maximowicz in Bull. Acad. Sci. St. Petersbourg, XXIX. 103; 



in Mel Biol. XI. 698 (pro parte) (1883). 

 Prunus apetala, typica Schneider, III. Handb. Laubholzk. I. 608 (1906), hue 

 pertinere videtiu-. 

 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, Matsimiura (sent as P. Miqueliana); 

 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, Tschonoski (as P. ceraseidos, var. glabrata 

 Maximowicz; other specimens from Tschonoski 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 autximnaUs 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 vaUdas gerentes; lamina e basi late cuneata ovato-oblonga, oblonga v. 

 oblongo-lanceolata, 3.4-5.7 cm. longa, 1.2-2.3 cm. lata, sensim acuminata, inciso- 

 duplicato-serrata, dentibus vix acuminalis, glandula capitata terminatis, supra 

 pilis conspersa, subtus in nervis densiuscule ceterum spar.sim pilosa, nervis utrin- 

 eecus 7-8. Involucra 4 mm. longa, 3 mm. lata; pedunculus nullus; bracteae in- 



