The several pages given to the discussion of the characters of cherries are in preparation for a proper understanding of the classifications and descriptions of species and varieties. We are now ready for the classification of the species of cherries which contribute or may contribute forms for cultivation either for their fruits or as stocks upon which to grow edible cherries. The following is a brief conspectus of the edible species of Prunus followed by a fuller conspectus of the sub-genus Cerasus to which cherries belong.

A CLASSIFICATION OF CULTIVATED CHERRIES

The genus Prunus is variously delimited and divided by systematic botanists. A simple, and from a horticultural point of view, a very satisfactory classification, is to put almonds and peaches in one sub-genus (Amygdalus), cherries in a second (Cerasus), plums and apricots in a third (Euprunus), and to place the racemose cherries and cherry-laurels, usually considered in Prunus, in another genus, Padus. In this division of Prunus into three sub-genera we may assign to each the following characters.

A. Leaves convolute, i. e., rolled in the bud (showing best in the opening buds).[3]
Euprunus. Plums and apricots.

A.A. Leaves conduplicate, i. e., folded lengthwise along the midrib in the bud.

B. Fruit more or less dry and hirsute; if juicy or glabrous the blossoms appear long before the opening of the leaves; fruits without stems.
Amygdalus. Almonds and peaches.

B.B. Fruit always juicy and usually glabrous; blooms appearing with the leaves.
Cerasus. Cherries.

Of these several divisions we are here concerned only with Cerasus, to which belong all fascicled cherries, the racemose, or Padus, cherries as yet having little or no value as esculents. The genus Prunus is from year to year being enlarged by the discovery of new species, the additions to Cerasus in particular being numerous. Thus, a decade ago, botanists placed in this sub-genus, at the outside, not more than a score of species but Koehne, the most recent monographer of Cerasus, describes 119 species. Of Koehne's species at least a dozen are more or less cultivated for their fruits and a score or more are grown as ornamentals.

The following species are listed by Koehne:[4]

SPECIES OF CHERRIES
Div. I. TYPOCERASUS Koehne.
Sect. 1 CREMASTOSEPALUM Koehne.
Subsect. 1. MAHALEB Koehne.
Cerasus sect. Mahaleb Roemer. Fam. Nat. Syn. 3:79. 1847.
Prunus subgen. Cerasus sect. Mahaleb Koehne. Deutsche Dendr. 305. 1893.
Ser. 1. Eumahaleb Koehne.
1. Prunus mahaleb Linnaeus. Sp. Pl. 472. 1753. Europe, Western Asia.
Ser. 2. Paramahaleb Koehne.
2. Prunus mollis Walpers. Rep. 2:9. Western North America.
3. Prunus emarginata Walpers. Rep. 2:9. Western North America.
Cerasus californica Greene. Fl. Francis 1:50.
4. Prunus pennsylvanica Linnaeus. Syst. ed 13 Suppl. 252. Eastern North America.
Subsect. 2. EUCERASUS Koehne.
Prunus sect. Eucerasus Koehne. Deutsche Dendr. 306. 1893.
5. Prunus fruticosa Pallas. Fl. Ross. 1:19. 1784. Europe to Siberia.
6. Prunus acida C. Koch. Dendr. 1:112. 1869. Southern Europe.
7. Prunus cerasus Linnaeus. Sp. Pl. 474. 1753. Europe, Western Asia.
8. Prunus avium Linnaeus. Fl. Svec. ed 2:165. 1755. Europe, Western Asia.
Subsect. 3. PHYLLOMAHALEB Koehne.
Ser. 1. Aphanadenium Koehne.
9. Prunus maximowiczii Ruprecht. Bul. Acad. Sci. St. Pétersburg 15:131. 1857.
Prunus bracteata Franchet & Savatier. Enum. Pl. Jap. 2:329. 1879.
Prunus apetala Zabel. Mitt. Deutsch. Dendr. Ges. 13:60 (not Franchet & Savatier) 1904. Amur, eastern Manchuria, Korea, Saghalin, Japan from Hokkaido to Kiushiu.
Prunus maximowiczii aperta Komarow. Act. Hort. Petrop. 22:5, 48. 1904. Manchuria from the Ussuri through Kirin to Mukden and northern Korea
10. Prunus pulchella Koehne. Plant. Wils. Pt. 2:197. 1912. Western Hupeh.
Ser. 2. Macradenium Koehne.
11. Prunus conadenia Koehne. l. c. 197. Western Szechuan.
12. Prunus pleiocerasus Koehne. l. c. 198. Western Szechuan.
13. Prunus macradenia Koehne. l. c. 199. Western Szechuan.
14. Prunus discadenia Koehne. l. c. 200. Western Hupeh.
15. Prunus szechuanica Batalin. Act. Hort. Petrop. 14:167. 1895. Szechuan.
Subsect. 4. PHYLLOCERASUS Koehne.
16. Prunus tatsienensis Batalin. Act. Hort. Petrop. 14:322. 1897. Szechuan.
Prunus tatsienensis adenophora (Franchet) Koehne. Plant. Wils. Pt. 2:238. 1912.
Prunus maximowiczii adenophora Franchet. Pl. Delavay. 195. 1889. Yunnan.
Prunus tatsienensis stenadenia Koehne. Plant. Wils. Pt. 2:201. 1912. Western Szechuan.
17. Prunus variabilis Koehne. l. c. 201. Western Hupeh.
18. Prunus pilosiuscula (Schneider) Koehne. l. c. 202.
Prunus tatsienensis pilosiuscula Schneider. Fedde Rep. Nov. Sp. 1:66. 1905. Western Hupeh and Szechuan.
19. Prunus polytricha Koehne. Plant. Wils. Pt. 2:204. 1912. Western Hupeh.
20. Prunus rehderiana Koehne. l. c. 205. Western Hupeh.
21. Prunus venusta Koehne. l. c. 239. Western Hupeh.
22. Prunus litigiosa Schneider. Fedde Rep. Nov. Sp. 1:65. 1905. Hupeh.
Prunus litigiosa abbreviata Koehne. Plant. Wils. Pt. 2:205. 1912. Western Hupeh.
23. Prunus clarofolia Schneider. Fedde Rep. Nov. Sp. 1:67. 1905. Szechuan.
Subsect. 5. PSEUDOMAHALEB Koehne.
24. Prunus yunnanensis Franchet. Pl. Delavay. 195. 1889. Yunnan.
25. Prunus macgregoriana Koehne. Plant. Wils. Pt. 2:240. 1912. Western Hupeh.
26. Prunus henryi (Schneider) Koehne. l. c. 240.
Prunus yunnanensis henryi C. K. Schneider. Fedde Rep. Nov. Sp. 1:66 (in part) 1905. Yunnan.
27. Prunus neglecta Koehne. Plant. Wils. Pt. 2:241. 1912.
Prunus yunnanensis henryi C. K. Schneider. Fedde Rep. Nov. Sp. 1:66 (in part) 1905. Yunnan.
Subsect. 6. LOBOPETALUM Koehne.
Ser. 1. Heterocalyx Koehne.
28. Prunus scopulorum Koehne. Plant. Wils. Pt. 2:241. 1912. Western Hupeh.
29. Prunus glabra (Pampanini) Koehne.
Prunus hirtipes glabra Pampanini. Nuov. Giorn. Bot. Ital. 17:293. 1910; 18:122. 1911. Hupeh.
30. Prunus involucrata Koehne. Plant. Wils. Pt. 2:206. 1912. Western Hupeh.
31. Prunus hirtipes Hemsley. Jour. Linn. Soc. 23:218. 1887.
32. Prunus schneideriana Koehne. Plant. Wils. Pt. 2:242. 1912. Chekiang.
33. Prunus duclouxii Koehne. l. c. 242. Yunnan.
34. Prunus ampla Koehne. Plant. Wils. Pt. 2:243. 1912. Szechuan.
35. Prunus malifolia Koehne. l. c. 207. Western Hupeh.
Prunus malifolia rosthornii Koehne. l. c. 243. Szechuan.
Ser. 2. Cyclaminium Koehne.
36. Prunus cyclamina Koehne. Plant. Wils. Pt. 2:207. 1912. Western Hupeh.
Prunus cyclamina biflora Koehne. l. c. 243. Western China.
37. Prunus dielsiana Schneider. Fedde Rep. Nov. Sp. 1:68. 1905.
"P. szechuanica, var.?" or "P. szechuanica dielsiana Schneider," l. c., not P. szechuanica Batalin. Hupeh.
Prunus dielsiana laxa Koehne. Plant. Wils. Pt. 2:208. 1912. Western Hupeh.
Prunus dielsiana conferta Koehne. l. c. 244. Western Hupeh.
38. Prunus plurinervis Koehne. l. c. 208. Western Szechuan.
39. Prunus rufoides Schneider. Fedde Rep. Nov. Sp. 1:55. 1905. Szechuan.
40. Prunus hirtifolia Koehne. Plant. Wils. Pt. 2:209. 1912. Western Szechuan.
Sect. 2. PSEUDOCERASUS Koehne.
Prunus subgen. Cerasus sect. Yamasakura Koidzumi. Tokyo Bot. Mag. 25:183. 1911.
Subsect. 7. HYPADENIUM Koehne.
41. Prunus glandulifolia Ruprecht & Maximowicz. Mém. Sav. Étr. Acad. Sci. St. Pétersburg 9:87 (Prim. Fl. Amur.) 1859. Amur.
Subsect. 8. SARGENTIELLA Koehne.
42. Prunus pseudocerasus Lindley. Trans. Hort. Soc. Lond. 6:90. 1826. Cultivated in China.
Cerasus pseudocerasus G. Don. Loudon Hort. Brit. 200. 1830.
Prunus sieboldii Koidzumi. Tokyo Bot. Mag. 25:184. 1911.
Prunus pseudocerasus sieboldii Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:102.
Prunus paniculata Ker. Bot. Reg. 10: t. 800. 1824, not Prunus paniculata Thunberg.
Cerasus paniculata De Candolle. Prodr. 2:539. 1825.
Cerasus sieboldtii Carrière. Rev. Hort. 371. 1866.
Prunus sieboldii Wittmack. Gartenfl. 51:272. 1902.
Prunus pseudocerasus serrulata sieboldtii Makino. Tokyo Bot. Mag. 22:102. 1908?
Prunus serrulata serrulata sieboldtii Makino. l. c. 23:74. 1909.
Prunus pseudocerasus typica sieboldii Koidzumi. l. c. 182.
Prunus pseudocerasus flore roseo pleno Koehne. (Horticultural)
Prunus pseudocerasus naden Koehne. (Horticultural)
Prunus pseudocerasus watereri Koehne. l. c. 172. 1909.
Cerasus wattererii, cited by Lavallée Icon. Arb. Segrez. 119. 1885, as a synonym under Cerasus pseudocerasus?
Cerasus watereri Goldring. Garden 33:416, fig. p. 420. 1888?
Prunus serrulata serrulata wattererii Makino. Tokyo Bot. Mag. 23:75. 1909? (Horticultural)
Prunus pseudocerasus virescens Koehne.
Prunus donarium Siebold. Rijks-Herbarium, Leyden.
43. Prunus paracerasus Koehne. Fedde Rep. Nov. Sp. 7:133. 1909. Japan. (Horticultural)
44. Prunus serrulata Lindley. Trans. Hort. Soc. London 7:138. 1830.
Prunus cerasus flore simplici Thunberg. Fl. Jap. 201. 1784.
Prunus donarium Siebold. Verh. Batav. Genoot. 12: No. 1. 68 (Syn. Pl. Oecon.) 1827.
Prunus jamasakura Siebold. l. c. 1827.
Cerasus serrulata G. Don. Loudon Hort. Brit. 480. 1830.
Prunus puddum Miquel. Ann. Mus. Lugd.-Bat. 2:90, (in part, not Wallich) 1865.
Prunus pseudocerasus jamasakura glabra Makino. Tokyo Bot. Mag. 22:93. 1809.
Prunus pseudocerasus jamasakura præcox Makino. l. c. 98. 1908.
Prunus pseudocerasus jamasakura glabra præcox Makino. l. c. 113.
Prunus pseudocerasus serrulata glabra Makino. l. c. 101.
Prunus pseudocerasus spontanea hortensis Koidzumi. l. c. 23:183. 1909.
Prunus cerasus flore pleno Thunberg. Fl. Jap. 201. 1784.
Prunus serrulata Lindley. cf. supra.
Cerasus serrulata G. Don. Loudon Arb. Brit. 2:701, fig. 407. 1833.
Cerasus pseudocerasus Lavallée. Icon. Arb. Segrez. 119, t. 36. 1885, (ubi citatur: Cerasus maeda h.).
Prunus pseudocerasus serrulata glabra fugenzo Makino. Tokyo Bot. Mag. 22:73. 1908.
Prunus serrulata serrulata fugenzo rosea Makino. l. c. 23:74. 1909.
Prunus jamasakura elegans glabra Koidzumi. l. c. 25:185. 1911.
Prunus jamasakura speciosa Koidzumi. l. c. 186. Japan, Korea.
Prunus serrulata albida (Makino) Koehne.
Prunus pseudocerasus hortensis flore simplici albo Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:102.
Prunus pseudocerasus Stapf. Bot. Mag. 131: t. 8012. 1905.
Prunus pseudocerasus serrulata sieboldii albida Makino. Tokyo Bot. Mag. 22:102. 1908.
Prunus serrulata serrulata albida Makino. l. c. 23:74. 1909.
Prunus serrulata yashino Koehne. Mitt. Deutsch. Dendr. Ges. 18:167. 1909.
Prunus pseudocerasus yoshino Koehne. (Horticultural)
Prunus serrulata lannesiana (Carrière) Koehne. Mitt. Deutsch. Dendr. Ges. 18:167. 1909.
Cerasus lannesiana Carrière. Rev. Hort. 198. 1872.
Prunus pseudocerasus hortensis flore simplici carneo Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:102.
Prunus serrulata serrulata lannesiana Makino. Tokyo Bot. Mag. 23:74. 1909.
Prunus jamasakura speciosa nobilis Koidzumi. l. c. 25:187. 1911.
Prunus serrulata kriegeri Koehne. Gartenfl. 52:2 (nomen nudum) 1902.
Cerasus pendula kriegeri F. Späth ex Koehne.
Prunus serrulata grandiflora A. Wagner. Gartenfl. 52:169, t. 1513a. 1903.
Prunus pseudocerasus hortensis flore pleno viridi Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:102.
Prunus pseudocerasus serrulata glabra viridiflora Makino. Tokyo Bot. Mag. 22:102 1908.
Prunus serrulata serrulata viridiflora Makino. l. c. 23:74. 1909.
Cerasus donarium Siebold. Rijks-Herbarium, Leyden.
Prunus pseudocerasus ukon Koehne. (Horticultural)
Prunus serrulata ochichima Koehne. Mitt. Deutsch. Dendr. Ges. 18:169. 1909.
Prunus serrulata serrulata fugenzo, 2. alborosea Makino. Tokyo Bot. Mag. 23:74. 1909.
Prunus pseudocerasus ochichima Koehne. (Horticultural)
Prunus pseudocerasus shirofugen Koehne. (Horticultural)
Prunus serrulata hisakura Koehne. Gartenfl. 51:2, t. 1494 b. 1902.
Cerasus caproniana flore roseo pleno Van Houtte. Fl. des. Serres 21:141, t. 2238. 1875.
Cerasus serratifolia rosea Carrière. Rev. Hort. 889, t. fig. B. 1877.
Prunus pseudocerasus hortensis flore semipleno roseo Maximowicz. Bul. Acad. Sci. St. Pétersburg 11:699. 1883.
Prunus pseudocerasus hisakura Koehne. (Horticultural)
Prunus pseudocerasus benifugen Koehne. (Horticultural)
Prunus pseudocerasus "New Red." Koehne. (Horticultural)
Prunus serrulata "W. Kou." Koehne. (Horticultural)
Prunus jamasakura speciosa nobilis donarium Koidzumi. Tokyo Bot. Mag. 25:187. 1911.
Prunus serrulata veitchiana Koehne. Fedde Rep. Nov. Sp. 9:122. 1911.
Cerasus pseudocerasus "James Veitch." Gartenfl. 51:497. 1902. (Horticultural)
Prunus serrulata mucronata Koehne. Mitt. Deutsch. Dendr. Ges. 18:170. 1909.
Prunus pseudocerasus hortensis flore pulcherrimo pleno candido Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:102.
Prunus cerasus flore roseo pleno Koehne. (Horticultural)
Prunus serrulata flore pleno Koehne. (Horticultural)
Prunus serrulata shidare-sakura Koehne. Mitt. Deutsch. Dendr. Ges. 18:170. 1909.
Prunus pseudocerasus hortensis flore carneo suffuso Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:102.
Prunus pseudocerasus shidare-sakura Koehne. (Horticultural)
44 × 88 ? Prunus affinis Makino. Prunus pseudocerasus jamasakura × incisa? Makino. Tokyo Bot. Mag. 22:99. 1908. Japan.
45. Prunus sargentii Rehder. Mitt. Deutsch. Dendr. Ges. 17:159. 1908.
Prunus puddum Miquel. Ann. Mus. Lugd.-Bat. 2:90 (in part, not Wallich) 1865.
Prunus pseudocerasus sachalinensis F. Schmidt. Mém. Acad. Sci. St. Pétersburg sér. 7, 12: No. 2. 124.
Prunus pseudocerasus spontanea Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:102.
Prunus mume crasseglandulosa Miquel. Rijks-Herbarium, Leyden.
Prunus pseudocerasus Sargent. Garden and Forest 10:462, fig. 58 (not Lindley) 1897.
Prunus Sp. Zabel. Beissner, Schelle & Zabel Handb. Laubholz-Ben. 241. 1903.
Prunus pseudocerasus borealis Makino. Tokyo Bot. Mag. 22:99. 1908.
Prunus serrulata borealis Makino. l. c. 23:75. 1909.
Prunus pseudocerasus spontanea Koidzumi. l. c. 182.
Prunus jamasakura elegans compta Koidzumi. l. c. 25:186. 1911.
Prunus jamasakura borealis Koidzumi. l. c. 187. Korea, Saghalin, Japan.
46. Prunus tenuiflora Koehne. Plant Wils. Pt. 2:209. 1912. Western Hupeh.
47. Prunus wildeniana Koehne. l. c. 249. Hupeh.
48. Prunus leveilleana Koehne. l. c. 250. Korea.
49. Prunus sontagiæ Koehne. l. c. 250. Korea.
50. Prunus mesadenia Koehne. l. c. 250. Nippon.
51. Prunus parvifolia (Matsumura) Koehne. l. c. 251.
Prunus pseudocerasus parvifolia Matsumura. Tokyo Bot. Mag. 15:101. 1901.
Prunus pseudocerasus typica parvifolia Koidzumi. l. c. 23:182. 1909.
Prunus jamasakura elegans parvifolia Koidzumi. l. c. 25:186. 1911. Japan.
Prunus parvifolia aomoriensis Koehne. Plant. Wils. Pt. 2:251. 1912. Northern Nippon.
52. Prunus concinna Koehne. l. c. 210. Western Hupeh.
53. Prunus twymaniana Koehne. l. c. 211. Western Szechuan.
Subsect. 9. CONRADINIA Koehne.
54. Prunus conradinæ Koehne. Plant. Wils. Pt. 2:211. 1912. Western Hupeh.
55. Prunus helenæ Koehne. l. c. 212. Western Hupeh.
56. Prunus saltuum Koehne. l. c. 213. Western Hupeh.
57. Prunus pauciflora Bunge. Mém. Étr. Acad. Sci. St. Pétersburg2:97 (Enum. Pl. Chin. Bor.) 1835. Chili.
58. Prunus sprengeri Pampanini. Nuov. Giorn. Bot. Ital. 18:230. 1911. Hupeh.
59. Prunus yedœnsis Matsumura. Tokyo Bot. Mag. 15:100. 1901. Cultivated in the gardens of Tokyo.
Subsect. 10. SERRULA Koehne.
60. Prunus majestica Koehne. Plant. Wils. Pt. 2:252. 1912.
Prunus puddum Franchet. Pl. Delavay. 197 (not Roxburgh following Brandis) 1889.
Prunus cerasoides tibetica Schneider. Fedde Rep. Nov. Sp. 1:54 (in part) 1905. Yunnan.
61. Prunus serrula Franchet. Pl. Delavay. 196. 1889. Yunnan.
Prunus serrula tibetica (Batalin) Koehne. Plant. Wils. Pt. 2:213. 1912. Western Szechuan.
Subsect. 11. PUDDUM Koehne.
62. Prunus campanulata Maximowicz. Bul. Acad. Sci. St. Pétersburg 29. 103.
Prunus cerasoides Koidzumi. Tokyo Bot. Mag. 23:181 (in part, not D. Don) 1909. Fokien.
Cultivated in Japan.
63. Prunus hosseusii Diels. Fedde Rep. Nov. Sp. 4:289. 1907. Siam.
64. Prunus cerasoides D. Don. Prodr. Fl. Nepal. 239. 1825.
Prunus silvatica Roxburgh. Hort. Beng. 92. 1814.
Cerasus phoshia Hamilton. De Candolle Prodr. 2:535. 1825.
Cerasus puddum Seringe. De Candolle Prodr. 2:537. 1825.
Prunus puddum Roxburgh. Forest Fl. Brit. Ind. 194. 1874. Nepal.
65. Prunus rufa Steudel. Nomencl. Bot. 2:404. 1841.
Cerasus rufa Wallich. Cat. No. 721. 1829. Eastern Himalaya.
66. Prunus trichantha Koehne. Plant. Wils. Pt. 2:254. 1912.
Prunus rufa Hooker. Fl. Brit. Ind. 2:314 (in part) 1878. Eastern Himalaya.
Subsect. 12. MICROCALYMMA Koehne.
67. Prunus herincquiana Lavallée. Plant. Wils. Pt. 2:214. 1912. Western Hupeh.
Prunus herincquiana biloba (Franchet) Koehne. Western Hupeh.
Prunus biloba Franchet in Herb. Paris. China.
68. Prunus subhirtella Miquel. Ann. Mus. Lugd.-Bat. 2:91. 1865.
Prunus subhirtella oblongifolia Miquel. l. c.
Prunus incisa Maximowicz. Bul. Sci. Acad. St. Pétersburg 29:99.
Prunus pendula ascendens Makino. Tokyo Bot. Mag. 7:103. 1893?
Prunus herincquiana ascendens Schneider. Ill. Handb. Laubholzk. 1:608. 1906.
Prunus itosakra subhirtella Koidzumi. Tokyo Bot. Mag. 23:180. 1908. Japan.
Prunus subhirtella fukubana Makino. Tokyo Bot. Mag. 22:118. 1908.
Prunus itosakra ascendens amabilis Koidzumi. l. c. 23:181. 1909?
69. Prunus pendula Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:98.
Prunus itosakura Siebold. Verh. Batav. Genoot. 12: No. 1. 68. 1830.
Cerasus pendula flore roseo Siebold. Cat. 5:31. 1863, Maximowicz.
Cerasus pendula rosea Dombrain. Floral Mag. 10. t. 536. 1871.
Prunus subhirtella pendula Tanaka. Useful Pl. Jap. 153, fig. 620. 1895.
Cerasus itosakura Siebold. Herb., Maximowicz. l. c.
Cerasus herincquiana Lavallée. Icon. Arb. Segrez, 117. 1885.
Prunus miqueliana Schneider. Ill. Handb. Laubholzk, 1:609 (not Maximowicz) 1906.
Prunus herincquiana Schneider. l. c. 608.
Cerasus pendula Siebold in herb., Koehne. l. c.
Prunus cerasus pendula flore roseo Koehne. l. c. (Horticultural)
Prunus itosakra pendula Koidzumi. Tokyo Bot. Mag. 23:180. 1909. Japan.
70. Prunus taiwaniana Hayata. Jour. Coll. Sci. Tokyo 30:87. 1911. Formosa.
71. Prunus microlepis Koehne. Plant. Wils. Pt. 2:256. 1912. Hondo.
Prunus microlepis ternata Koehne. l. c. 256. Hondo.
Subsect. 13. CERASEIDOS (Siebold & Zuccarini) Koehne.
Ceraseidos Siebold & Zuccarini. Abh. Akad. Münch. 3:743 t. 5. 1843.
Ser. 1. Phyllopodium.
72. Prunus setulosa Batalin. Act. Hort. Petrop. 12:165. 1892. Eastern Kansu.
73. Prunus phyllopoda Koehne. Plant. Wils. Pt. 2:257. 1912. Northern Shensi.
74. Prunus canescens Bois. l. c. 215. Western Hupeh.
75. Prunus veitchii Koehne. l. c..257. Western Hupeh.
Ser. 2. Droserina.
76. Prunus giraldiana Schneider. Fedde Rep. Nov. Sp. 1:65. 1905. Northern Shensi.
77. Prunus droseracea Koehne. Plant. Wils. Pt. 2:215. 1912. Western Szechuan.
Ser. 3. Oxyodon.
78. Prunus trichostoma Koehne. l. c. 216. Western Szechuan.
79. Prunus latidentata Koehne. l. c. 217. Western Szechuan.
80. Prunus micromeloides Koehne. l. c. 218. Western Szechuan.
81. Prunus oxyodonta Koehne. l. c. 218. Western Szechuan.
82. Prunus glyptocarya Koehne. l. c. 219. Western Szechuan.
83. Prunus podadenia Koehne. l. c. 258. Western China.
84. Prunus lobulata Koehne. l. c. 220. Western Szechuan.
85. Prunus stipulacea Maximowicz. Bul. Acad. Sci. St. Pétersburg 11:689. 1883. Kansu.
86. Prunus pleuroptera Koehne. Plant. Wils. Pt. 2:221. 1912. Western Szechuan.
87. Prunus zappeyana Koehne. l. c. 221. Western Hupeh.
Prunus zappeyana? subsimplex Koehne. l. c. 222. Western Hupeh.
88. Prunus incisa Thunberg. Fl. Jap. 202. 1784.
Cerasus incisa Loiseleur. Nouveau Duhamel 5:33. 1812.
Ceraseidos apetala Miquel. Ann. Mus. Lugd.-Bat. 2:93 1865 (in part). Japan.
Ser. 4. Euceraseidos.
89. Prunus caudata Franchet. Pl. Delavay. 196. 1889. Yunnan.
90. Prunus iwagiensis Koehne. Plant. Wils. Pt. 2:259. 1912. Hondo.
91. Prunus nipponica Matsumura. Tokyo Bot. Mag. 15:99. 1901.
Prunus miqueliana Koidzumi. l. c. 23:184 (not Maximowicz) 1909.
Prunus ceraseidos Maximowicz. Bul. Acad. Sci. St. Pétersburg 29:103.
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.
Prunus glandulosa glabra rosea Koehne. Plant. Wils. Pt. 2:263. 1912.
Prunus japonica typica flore roseo Maximowicz, in sched.
Prunus japonica flor. simp. Tanaka. Useful Pl. Jap. 153, fig. 621. 1895.
Prunus japonica glandulosa Matsumura. Tokyo Bot. Mag. 14:136. 1900. Japan.
Prunus glandulosa glabra albiplena Koehne. Plant Wils. Pt. 2:264. 1912.
Cerasus japonica multiplex Seringe. De Candolle Prodr. 2:539 (in part) 1825.
Prunus japonica flore pleno Siebold & Zuccarini. Fl. Jap. 1:172 t. 90 f. 111. (in part) 1826.
Prunus japonica Oudemans. Neerlands Plantentuin t. 2. 1865.
Prunus japonica flore albo pleno Lemaire. Ill. Hort. 5: t. 183. 1858.
Prunus japonica Maximowicz. Bul. Soc. Nat. Mosc. 54. 14 (in part) 1879.
Prunus japonica multiplex Makino. Tokyo Bot. Mag. 22:72 (in part) 1908. Japan.
Prunus glandulosa purdomii Koehne. Plant. Wils. Pt. 2:264. 1912. Northern China.
Prunus glandulosa trichostyla Koehne. l. c. 224.
Prunus glandulosa trichostyla faberi Koehne. l. c. 224.
Prunus japonica J. Hutchinson. Bot. Mag. 135: t. 8260 (not Thunberg) 1909. Shantung.
Prunus glandulosa trichostyla paokangensis (Schneider) Koehne. Plant. Wils. Pt. 2:264. 1912.
Prunus japonica packangensis Schneider. Fedde Rep. Nov. Sp. 1:53. 1905. Western Hupeh.
Prunus glandulosa trichostyla sinensis (Persoon) Koehne. Plant. Wils. Pt. 2:265. 1912.
Amygdalus indica nana Plukenett. Phytogr. 1: t. 11. f. 4 (1691, new edit. 1769).
Prunus sinensis Persoon. Syn. 2:36. 1807.
Cerasus japonica Seringe. De Candolle Prodr. 2:539 (in part) 1825.
Prunus japonica flore pleno Siebold & Zuccarini. Fl. Jap. 1:172 t. 90 f. 111. (in part) 1826.
Prunus japonica Maximowicz. Bul. Soc. Nat. Mosc. 54:14 (in part) 1883. Northern Shensi.
Prunus glandulosa salicifoli (Komarov) Koehne. Plant. Wils. Pt. 2:265. 1912.
Prunus japonica salicifolia Komarov. Act. Hort. Petrop. 22:754. 1904. Shing-king.
105. Prunus pogonostyla Maximowicz. Bul. Soc. Nat. Mosc. 54:11. 1879.
Prunus formosana Matsumura. Tokyo Bot. Mag. 15:86. 1901.
Prunus pogonostyla globosa Koehne. Plant. Wils. Pt. 2:265. 1912. Formosa.
Prunus pogonostyla obovata Koehne. l. c. 265. Formosa.
106. Prunus japonica Thunberg. Fl. Jap. 201. 1784.
Prunus japonica japonica Maximowicz. Bul. Soc. Nat. Mosc. 54:12. 1879.
Prunus japonica typica Matsumura. Tokyo Bot. Mag. 14:135. 1900.
Prunus japonica eujaponica Koehne. Plant. Wils. Pt. 2:266. 1912.
Prunus japonica eujaponica fauriei Koehne. l. c. 266. Japan.
Prunus japonica eujaponica oldhamii Koehne. l. c. 266. Hupeh.
Prunus japonica gracillima Koehne. l. c. 266.
Prunus japonica gracillima thunbergii Koehne. l. c. 266.
Prunus japonica thunbergii Koehne. Fedde Rep. Nov. Sp. 8:23. 1910. Cultivated in the Späth Arboretum near Berlin, received from St. Petersburg.
Prunus japonica gracillima engleri Koehne. Plant. Wils. Pt. 2:266. 1912.
Prunus japonica engleri Koehne. l. c. 266. Manchuria.
Prunus japonica gracillima minor Koehne. l. c. 267. Cultivated in the Späth Arboretum, Berlin.
Prunus japonica gracillima sphaerica (Carrière) Koehne. l. c. 267.
Prunus japonica sphaerica Carrière. Rev. Hort. 468, fig. 163. 1890.
Prunus japonica kerii (Steudel) Koehne. Plant. Wils. Pt. 2:267. 1912.
Prunus japonica Ker-Gawler. Bot. Reg. 1: t. 27. 1815.
Amygdalus pumila Sims. Bot. Mag. 47: t. 2176. 1820.
Prunus kerii Steudel. Nomencl. Bot. ed. 2, 403. 1841, which cites "Cerasus" japonica Ker-Gawler.
Prunus japonica typica flore pleno Zabel. Beissner, Schelle & Zabel Handb. Laubholz-Ben. 238. 1903. Chekiang. Cultivated in England.
? Prunus praecox Carrière. Rev. Hort. 488, fig. 142, 143. 1892. Originated from sowings of Prunus japonica sphaerica and supposed to be Prunus japonica × domestica.
107. Prunus nakaii Léveillé. Fedde Rep. Nov. Sp. 7:198. 1909. Korea.
108. Prunus carcharias Koehne. Plant. Wils. Pt. 2:267. 1912. Szechuan.
Sect. 2. AMYGDALOCERASUS Koehne.
Cerasus sect. Microcerasus Spach.
Microcerasus Webb. Phytogr. Canar. 2:19 (1836-50); Schneider Ill. Handb. Laubholzk. 1:601. 1906.
Prunus subgen. Microcerasus Focke. Engler & Prantl Natürl. Pflanzenfam. 3:3, 54. 1888.
Prunus sect. Trichocerasus et subgen. Microcerasus Koehne. Deutsche Dendr. 302, 306. 1893.
109. Prunus tomentosa Thunberg. Fl. Jap. 203. 1784.—Siebold & Zuccarini Fl. Jap. 1:51, t. 22. 1826. Japan, western and northern China.
Prunus tomentosa spaethiana Koehne. Plant. Wils. Pt. 2:269. 1912. Cultivated in European gardens.
Prunus tomentosa graebneriana Koehne. l. c. 269. Cultivated near the Botanic Garden, Berlin-Dahlem.
Prunus tomentosa insularis Koehne. l. c. 269. Japan. Cultivated in Japan.
Prunus tomentosa souliei Koehne. l. c. 269. Szechuan.
Prunus tomentosa kashkarovii Koehne. l. c. 269. Tibet.
Prunus tomentosa endotricha Koehne. l. c. 225. Western Hupeh.
Prunus tomentosa breviflora Koehne. l. c. 270. Northern Shensi.
Prunus tomentosa trichocarpa (Bunge) Koehne. Plant. Wils. Pt. 2:270. 1912.
Prunus trichocarpa Bunge. Mém. Étr. Acad. Sci. St. Pétersburg 2:96 (Enum. Pl. Chin. Bor.) 1833. Northern China.
Prunus tomentosa tsuluensis Koehne. Plant. Wils. Pt. 2:270. 1912. Northern Shensi.
Prunus tomentosa heteromera Koehne. l. c. 270. Szechuan.
110. Prunus batalinii (Schneider) Koehne. l. c. 270.
Prunus tomentosa, (?) Batalinii Schneider. Fedde Rep. Nov. Sp. 1:52. 1905. Szechuan.
111. Prunus cinerascens Franchet. Nouv. Arch. Mus. Paris. sér. 2, 8:216 (Pl. David. II. 34) 1885. Western Szechuan.
112. Prunus jacquemontii (Edgeworth) Hooke. Fl. Brit. Ind. 2:314. 1878. Afghanistan, Northwestern Himalaya, Tibet.
113. Prunus incana (Pallas) Steven. Mém. Soc. Nat. Mosc. 3:263. 1812. Armenia, Georgia, Himalaya?
Cf. Cerasus hippophaeoides Bornmüller. Oester. Bot. Zeit. 49:15. 1899. Cappadocia.
114. Prunus griffithii (Boissier) Schneider. Ill. Handb. Laubholzk. 1:606. 1906. Afghanistan.
115. Prunus prostrata Labillardière. Icon. Pl. Syr. 1:15, t. 6. 1791. Southern Europe, Crete, Algier, Western Asia to Persia and Syria.
Cf. Prunus bifrons Fritsch. Sitz. Akad. Wien 101: pt. 1. 636, t. 3, fig. 1. 1892. Himalaya?
116. Prunus brachypetala (Boissier) Walpers. Ann. 1:272. 1848-49. Southern Persia.
117. Prunus microcarpa C. A. Meyer. Verz. Pfl. Caucas. Casp. 166. 1831. Caucasia, Northern Persia.
Cf. Cerasus tortuosa Boissier & Haussknecht. Boissier Fl. Or. 2:647. 1872. Antilibanon, Cappadocia, Kurdistan.
118. Prunus verrucosa Franchet. Ann. Sci. Nat. sér. 6, 16:280. 1883. Turkestan.
Cf. Prunus calycosus Aitchison & Hemsley. Trans. Linn. Soc. 3:61, t. 8. 1888. Afghanistan.
119. Prunus diffusa (Boissier & Haussknecht) Schneider. Ill. Handb. Laubholzk. 1:606. 1906. Southwestern Persia.