260 WILSON EXPEDITION TO CHINA 



clusae, raro subexsertae, oblongae, 5 mm. longae, serrulatae, herbaceae; flores 1-2 

 umbellati, autumno florentes; pedicelli 4-7 mm. longi, parcissime pilosi; cupula 

 4 mm. longa, tubuloso-campanulata, glabra v. parcissime pilosa; sepala oblonga 

 acutiuscula, 3.5 mm. longa, minutim dense serrulata; petala anguste ovata, 9 mm. 

 longa, 5 mm. lata, vix emarginata; stamina 29, petalis multo breviora, ad 3 mm. 

 longa; stylus staminibus 2-3 mm. longior, glaber (" thinly pilose," Makino). 

 Drupa ignota. 



Hondo: Yedo, autumno, Wichura (No. 11476). 



Belongs according to the leaves to sect. Euceraseidos, though it much resembles 

 in the shape of the cupula and the sepals P. pendula Maximowicz. 



93. Prunus kurilensis Miyabe apud Takeda in Tokyo Bot. Mag. XXIV. 11 

 (1910). 



P. ceraseidos, var. kurilensis Miyabe, in Mem. Boston Soc. Nat. Hist. IV. 226 



(Fl. Kurile I si.) (1890). 

 P. incisa, var. kurilensis Koidzumi in Tokyo Bot. Mag. XXIII. 184 (1909). 



I have seen no specimen of this species. In the Berlin Botanic Garden a plant 

 is cultivated received from Sapporo aus P. kurilensis which has not yet flowered. 

 It exhibits the following characters: 



Rami hornotini autumno glabri, hinc pallidi, hinc purpureo-fusci, vetustiores 

 nigrescenti-fusci; gemmae 1.5-2 mm. longae, rotundatae v. ovatae. Stipulae circa 

 3-4 mm. longae, ovatae vel oblongae, glanduloso-serratae, pro parte persistentes; 

 petioli 5-14 mm. longi, breviter patentim villosi; glandulae saepe 1-2, petioli apici 

 vel laminae basi insertae; lamina e basi acuta vel rotundata rotundato-ovata v. 

 latius angustiusve obovata, 4-7.5 cm. longa, 2.4-4.2 cm. lata, lobulato-dupli- 

 cato-serrata, lobulis latioribus quam longis vel sublongioribus quam latis, dentibus 

 subacuminatis, glandula capitata terminatis, supra sparsim strigosa vel glabrata, 

 subtus in costa, vix in nervis hirsuta v. glabrata, supra laete viridis, subtus 

 paullo pallidior. 



The leaves resemble strongly those of P. nipponica Maximowicz. The Berlin 

 plant differs from the original description in the narrower leaves, which are described 

 by Miyabe as orbicular to obovate, 7-8 cm. long and 5.2-6 cm. broad. 



94. Prunus nikkoensis Koehne, n. sp. 



Rami annotini pallide cani, nigro-punctulati, glabri, vetustiores nigro-fusci. 

 Folia valde juvenilia tantum nota: glandulae 1-2 petioli apici insertae; lamina 

 ovata, 1.5-2 cm. longa, caudata, profunde inciso-duplicato-serrata, dentibus duplo 

 longioribus quam latis, obtusiusculis subcuspidatis, glandula capitata terminatis, 

 supra undique, subtus in nervis pilis longis albis plus minus dense obtecta. In- 

 volucra 7-9 mm. longa, 5-9 mm. lata, erecto-patula; pedunculus nullus; flores 

 2-4 umbellati, praecoces v. subpraecoces; bracteae inclusae; pedicelli 6-13 mm. 

 longi, glabri; cupula 5-6 mm. longa, subanguste campanulato-tubulosa v. leviter 

 obconica, glabra; sepala ovata v. ovato-oblonga, subacuminata, 2-3.5 mm. longa, 

 Integra, glabra; petala ovata v. obovata, 6.5-7 mm. longa, 4 mm. lata, emarginata 

 sinu triangulari-patente; stamina 31-34, petalis breviora, ad 3.6-4 mm. longa; 

 stylus staminibus 2.5-4 mm. longior, glaber. Drupa ignota. 



Japan: without date and locality, H. Shirasawa (sent to me as P. pseudocerasus 

 spontanea); Nikko", May 7, 1898, U. Faurie (No. 2096, determined by Shirai as P. 

 ceraseidos, var. glabrata Maximowicz). 



This species is very distinct from P. pseudocerasus Lindley in the precocious 

 flowers and in the quite different serratures of the leaves and their glands. It ia 

 also readily distinguished from " P. ceraseidos glabrata Maximowicz " (which is prob- 



