544 



ROSACEAE 



kjura var. subhirtella (Miq.) Koidz.; P. subhirtella var. glabra 



Koidz. Ko-HiGANZAKURA, Chimoto-higan. Small tree 



with slender branches, ascending-pubescent while young; 

 leaves obovate, 3-8 cm. long, duplicate-toothed, with 7-10 pairs 

 of lateral nerves, the petioles pubescent; calyx-tube slightly 



inflated below, short-pubescent; style usually glabrous. 



Mar.-Apr. Alleged hybrid of Nos. 9 and 10. Cultivated 



only, unknown in the wild. 



Var. autumnalis Makino. P. autumnalis (Makino) Koehne 

 JuGATsu-ZAKtiRA. Differs in having double flowers, ap- 

 pearing in spring and in autumn. Cultivated only, un- 

 known in the wild. 



11. Prunus campanula ta Maxim. P. cerasoides var. 



campanulata (Maxim.) Koidz. Hi-kanzakuka, Kan-hi- 



ZAKURA. Small tree with rather stout branches; leaves ob- 

 ovate, ovate or elliptic, 7-12 cm. long, 3.5-5 cm. wide, glabrous; 



flowers 1-3, scarlet, semi-expanding, nodding. Feb.-Mar. 



Cultivated in warmer parts. Ryukyus and Formosa. 



12. Prunus nipponica Matsum. P. iwagiensis Koehne; 

 P. niWoensis Koehne; P. nipponica var. iwagiensis (Koehne) 



Koidz. MiNE-ZAKURA, Takanezakura. Shrub to small 



tree; leaves obovate to broadly so, caudately acuminate, 4-8 

 cm. long, 2-4.5 cm. wide, often thinly pilose beneath while 

 young, sometimes appressed-pilose above, pale green beneath, 

 incisely and doubly acute-toothed, the petioles 7-15 mm. long, 

 glabrous; flowers 1-3, in sessile umbels or in short-peduncled 

 umbellike corymbs, pink, the pedicels 2-3 cm. long, glabrous; 

 calyx-tube glabrous, about 6 mm. long, about 1.5 times as 

 long as the lobes; petals 10-12 mm. long, retuse. ^May- 

 July. High mountains; Hokkaido, Honshu (centr. and n. 

 distr.). 



Var. kurilensis (Miyabe) Wils. P. ceraseidos var. kurilen- 

 sis Miyabe; P. apetala var. iwozana C. K. Schn.; P. incisa var. 

 kurilensis (Miyabe) Koidz.; P. \urilensis (Miyabe) Miyabe ex 



Takeda; P. nipponica var. pubescens Koidz. Chishima-za- 



KURA. Petioles or pedicels or both pilose. Hokkaido, 



Honshu (centr. and n. distr.). Kuriles and Sakhalin. 



13. Prunus jamasakura Sieb. ex Koidz. P. donarium 

 Sieb., pro parte; P. serrulata sensu auct. Japon., non Lindl.; 

 P. pseudocerasus sensu auct. Japon., non Lindl.; P. pseudo- 

 cerasus var. jamasakura subvar. glabra Makino; P. donarium 

 var. glabra (Makino) Koidz.; P. jamasakura var. glabra (Ma- 

 kino) Koidz.; P. serrulata var. spontanea (Maxim.) Makino; 



P. mutabilis Miyoshi Yamazakura. Deciduous tree with 



dark brown transversely striate bark and rather slender gla- 

 brous branchlets; leaves oblong, narrowly elliptic or ovate to 

 obovate-oblong, 8-12 cm. long, 3-4.5(-5.5) cm. wide, deep 

 green and usually glabrous on upper side, whitish and gla- 

 brous beneath, acutely serrulate, the petioles reddish, with a 

 pair of sessile glands near the top; flowers few, in corymbs, 

 2.5-3 cm. across, pink, glabrous, the bracts obovate-cuneate, 

 rounded, 3-6 mm. long; calyx-tube tubular, the lobes entire; 

 drupe purplish black when mature.— Low mountains; Hon- 

 shu (Kanto Distr. and westw.), Shikoku, Kyushu; common 



and variable. Forma pubescens (Makino) Ohwi. P. 



pseudocerasus var. jamasakura subvar. pubescens Makino, pro 



parte Usuge-yamazakura. Petioles or pedicels or both 



thinly puberulent. 



Var. chikusiensis (Koidz.) Ohwi. P. chi^usiensis Koidz.; 



P. serrulata var. chikusiensis (Koidz.) Hatus. Tsukushi- 



zakura. An insular phase with stout branches, thicker 



leaves, and larger bracts; flowers larger, nearly white. 



Small islands around Kyushu. 



14. Prunus sargenlii Rehd. P. pseudocerasus var. sacha- 

 linensis F. Schmidt; P. sachalinensis (F. Schmidt) Koidz.; P. 

 jamasa\m-a var. borealis (Makino) Koidz.; P. serrulata var. 

 sachalinensis (F. Schmidt) Makino; P. serrulata var. borealis 

 Makino; P. floribunda Koehne O-yamazakura, Ezo- yama- 

 zakura, Beni-yamazakura. Resembles the preceding; bark 

 dark chestnut-brown, the branchlets stout, glabrous, with viscid 

 buds; leaves elliptic, ovate-elliptic or sometimes obovate-elliptic, 

 8-13 cm. long, 4-7 cm. wide, rounded or at least some of them 

 subcordate at base, deep green and usually glabrous on upper 

 side, glaucescent and glabrous beneath, with obliquely deltoid 

 teeth, the petioles 1.5-3 cm. long, glabrous, reddish, with a 

 pair of reddish sessile glands near the top; flowers 3-4 cm. 

 across, in sessile umbels, glabrous, pink; calyx-lobes entire; 



drupe dark purple. Apr.-May. Mountains; Hokkaido, 



Honshu (centr. and n. distr.). Sakhalin and Korea. 



Forma pubescens (Tatew.) Ohwi. P. sargentii var. pubes- 

 cens Tatew. Ke-Ezo-yamazakura. Pubescent on lower 



leaf surfaces, petioles or pedicels, or on all of them. 



15. Prunus verecunda (Koidz.) Koehne. P. jamasa- 

 kura var. verecunda Koidz.; P. donarium subsp. verecunda 

 (Koidz.) Koidz. Kasljmizakura. Resembling the pre- 

 ceding two species; bark grayish brown, the branchlets grayish 

 to yellowish brown, glabrous; leaves obovate, obovate-elliptic 

 or sometimes elliptic, rounded to cuneate, sometimes shallowly 

 cordate at base, 8-12 cm. long, 4-6 cm. wide, vivid green 

 and sometimes scattered-pilose on upper side, pale green to 

 bright green and lustrous and often with spreading hairs be- 

 neath, with short-awned coarser marginal teeth than in Nos. 

 13 and 14, the petioles slightly reddish, with a pair of small, 

 sessile glands on the upper part, usually more or less spread- 

 ing-pilose; flowers pink to nearly white, 2.5-3 cm. across, the 

 peduncles sometimes absent, the pedicels often spreading- 

 pilose, the bracts 3-6 mm. long; calyx-lobes glabrous, usually 

 entire. Apr.-May. Mountains; Hokkaido, Honshu, Shi- 

 koku, Kyushu. ^Korea. 



16. Prunus lannesiana (Carr.) Wils. var. speciosa 

 (Koidz.) Makino. P. seirulata var. albida subvar. speciosa 

 (Koidz.) Makino; P. donarium subsp. speciosa (Koidz.) 

 Koidz.; P. speciosa (Koidz.) Nakai Oshima-zakura. Re- 

 sembles Nos. 13-15; branchlets stouter, grayish to pale brown, 

 glabrous; leaves rather thick, obovate to obovate-elliptic, some- 

 times elliptic, 8-13 cm. long, 5-8 cm. wide, rounded to broadly 

 cuneate at base, vivid green on upper side, pale green beneath, 

 glabrous on both sides, with narrowly deltoid awn-tipped 

 teeth about 2 mm. long, some of the teeth doubly toothed, the 

 petioles nearly green or slightly reddish, with a pair of glands 

 near the top; flowers in corymbs, white, sometimes pink, 3.5-4 

 cm. across, the pedicels rather stout, elongate, glabrous, the 

 bracts flabellate-obovate, about 1 cm. long; calyx-lobes serrulate 

 with gland-tipped minute teeth; fruit rather large, dark purple. 



Mar.-Apr. Low mountains near the sea; Honshu (Awa, 



Izu Prov., and Izu Isls.). 



Var. lannesiana. Cerasus lannesiana Carr.; P. pseudocerasus 

 var. hortensis Maxim., pro parte maj.; P. donarium Sieb., pro 

 parte; P. serrulata var. lannesiana (Carr.) Rehd.; P. serrulata 



var. hortensis (Maxim.) Makino Satozakura. Includes 



an assemblage of various cultivars with large single or double 

 flowers. 



17. Prunus avium L. Seiyo-mizakura. Tree with 

 pyramidal crown and stout branches; leaves ovate- to obovate- 

 oblong, 8-15 cm. long, 5-7 cm. wide, abruptly short-acuminate, 

 irregularly obtuse-toothed, spreading-pilose beneath especially 



