[67] Heer Pflanz. Pfahl. 27, fig. 16c.
[68] Hooker Fl. Brit. Ind. 2: 315. 1879.
[69] The reader who desires fuller information regarding the botany of this species should consult the references given with the botanical description of Prunus insititia.
[70] McMahon, Bernard Gardener’s Calendar 587. 1806.
[71] Samuel Deane, D.D. New England Farmer 265. 1797.
[72] Koch, Karl Deut. Obst. 150. 1876.
[73] This subject is well discussed in an article by E. A. Carrière in Revue Horticole 438. 1892.
[74] Handb. Laubh. 628. 1906.
[75] Fl. Siles. 1:2, 10. 1829.
[76] Fl. Nied. Ostr. 819. 1890.