_Prunus apetala typica_ Schneider. _Ill. Handb. Laubholzk._ =1=:608. 1906. Japan. =92. Prunus autumnalis= Koehne. _Plant. Wils._ Pt. =2=:259. 1912. _Prunus subhirtella autumnalis_ Makino. _Tokyo Bot. Mag._ =22=:117. 1908. Hondo. =93. Prunus kurilensis= Miyabe. _Tokyo Bot. Mag._ =24=:11. 1910. _Prunus ceraseidos kurilensis_ Miyabe. _Mem. Boston Soc. Nat. Hist._ =4=:226 (Fl. Kurile Isl.) 1890. _Prunus incisa kurilensis_ Koidzumi. _Tokyo Bot. Mag._ =23=:184. 1909. =94. Prunus nikkoensis= Koehne. _Plant. Wils._ Pt. =2=:260. 1912. Japan. =95. Prunus miqueliana= Maximowicz. _Bul. Acad. Sci. St. Pétersburg_ =11=:692 (not Schneider) 1883. Japan. =96. Prunus tschonoskii= Koehne. _Plant. Wils._ Pt. =2=:261. 1912. _Prunus ceraseidos_ Maximowicz. _Bul. Acad. Sci. St. Pétersburg_ =29=:103. _Prunus apetala iwozana_ Schneider. _Ill. Handb. Laubholzk._ =1=:608. 1906. Japan. =97. Prunus apetala= (Siebold & Zuccarini) Franchet & Savatier. _Enum. Pl. Jap._ =2=:329. 1879 (not Zabel, cf. _P. maximowiczii_, No. 9). _Ceraseidos apetala_ Siebold & Zuccarini. _Abh. Akad. Münch._ =3=:743. t. 5. 1843. _Prunus ceraseidos_ Maximowicz. _Bul. Acad. Sci. St. Pétersburg_ =29=:103. Japan. Ser. 5. AMBLYODON. _98. Prunus gracilifolia_ Koehne. _Plant. Wils._ Pt. =2=:223. 1912. Western Hupeh. =99. Prunus rossiana= Koehne. _l. c._ 223. Western Hupeh. Div. II. MICROCERASUS (Spach, Roemer) Koehne. _Cerasus_ sect. Microcerasus Spach. _Hist. Vég._ =1=:423. 1834. _Microcerasus_ Webb. _Phytogr. Canar._ =2=:19. 1836-40. Sect. 1. SPIRAEOPSIS Koehne. Subsect. 1. MYRICOCERASUS Koehne. =100. Prunus pumila= Linnaeus. _Mant. Pl._ 75. 1767. Eastern North America. =101. Prunus besseyi= Bailey. _Bul. Cor. Ex. Sta._ =70=:261. 1894. Eastern North America. Subsect. 2. SPIRAEOCERASUS Koehne. =102. Prunus dictyoneura= Diels. _Bot. Jahrb._ 36, Beibl. 82, 57. 1905. Shensi. =103. Prunus humilis= Bunge. _Mém. Étr. Acad. Sci. St. Pétersburg_ =2=:97 (_Enum. Pl. Chin. Bor._) 1833. _Prunus salicina_ Lindley. _Trans. Hort. Soc. Lond._ =7=:239. 1830. _Prunus bungei_ Walpers. _Rep._ =2=:9 (not Moris) 1893. China. =104. Prunus glandulosa= Thunberg. _Fl. Jap._ 202. 1784. _Amygdalus pumila_ Linnaeus. _Mant._ =1=:74. 1767. _Cerasus glandulosa_ Loiseleur. _Nouv. Duhamel_ =5=:33. 1825. =Prunus glandulosa glabra= Koehne. _Plant. Wils._ Pt. =2=:263. 1912. _Prunus japonica glandulosa_ Maximowicz. _Bul. Soc. Nat. Mosc._ =54=:13. 1879. Japan. =Prunus glandulosa glabra alba= Koehne. _Plant. Wils._ Pt. =2=:263. 1912. _Prunus japonica_ Lindley. _Bot. Reg._ 8:t. 1801. 1835.