216 JOURNAL OF THE ARNOLD ARBORETUM [vol. v 



The related P. mongolica Maxim, discovered on the Urato Mountains, 

 which are close to the northeastern border of Shansi, will possibly be 

 found also in northern Chili, Shansi or Shensi. 



Prunus pilosa Maximowicz in Bull. Acad. Sci. St. Petersb. xxix. 79 



(1883); in Mel. Biol. XI. 664 (1883). 



Amygdalus pilosa Turczaninov in Bull. Soc. Nat. Moscou, v. 1S9 (1832). — 

 Bretschneider, Hist. Eur. Bot. Discov. China, 344 (1898). 



Chili: Tsagan Balgassu (ex Turczaninov, 1. c, and Maximowicz, 1. c); 

 Si wan tze (ex Maximowicz, 1. c). 



Shansi: "Shara hoda" Mountains (ex Maximowicz, 1. c). 



Prunus triloba Lindley in Gard. Chron. 1857, 268. — Maximowicz in 

 Bull. Soc. Nat. Moscou, liv. 15 (1879); in Bull. Acad. Sci. St. Petersb. 

 xxix. 79 (1883); in Mel. Biol. xi. 665 (1883).— Franchet in Nouv. Arch. 

 Mus. Paris, ser. 2, v. 256 (PI. David, i. 104) (1883); in Mem. Soc. Sci. 

 Nat. Cherbourg, xxiv. 214 (1884)/ — Hemsley in Jour. Linn. Soc. xxiii. 

 222 (1887).— Palibin in Act. Hort. Petrop. xiv. 116 (1895).— Bretschneider, 

 Hist. Eur. Bot. Discov. China, 1052 (1898). — Koehne in Sargent, PI. 

 Wilson, i. 274 (1912). — Cowdry in Jour. N. China Branch R. As. Soc. Lin. 

 164 (PI. Peitaiho) (1922). 



Amygdalus pedunculata Bunge in M£m. Div. Sav. Acad. Sci. St. Petersb. 

 ii.' 96 (Enum. PI. Chin. Bor.) (1833).— Maximowicz in M&n. Di\. Sav. 

 Acad. Sci. St. P6tersb. ix. 471 (Ind. Fl. Pekin.) (1859).— Bretschneider, 

 Hist. Eur. Bot. Discov. China, 332 (1898).— Non Pallas. 



Of this plant there exists a double-flowered form which unfortunately 

 is the type of the species; this makes it desirable to give varietal names 

 to both forms, as technically the binomial should stand for the double- 

 flowered form, while practically almost all botanists use the binomial 

 for the spontaneous form, and without a definite varietal name it is impos- 

 sible to know which form is meant. 



Prunus triloba f. multiplex, comb. nov. 



Amygdalus pedunculata (1. multiplex Bunge in M£m. Div. Sav. Acad. Sci. 



St. Petersb. n. 96 (Enum. PL Chin. Bor. 22) (1833). 

 Amygdalus pedunculata 7. polygyria Bunge, 1. c. 

 Prunus triloba var. plena Dippel, Handb. Laubholzk. in. 608 (1893). — Koehne 



in Sargent, PL Wilson. 1. 274 (1912). 



Chili: Peking, garden of German Legation, F. N. Meyer, no. 1393, 

 April 19, 1914; without locality, W. Purdom, no. 284, 1909 (seeds only; 

 plants raised from this seed are growing in this Arboretum). — See also 

 Bunge, 1. c, Maximowicz, 1. c, and Koehne, 1. c. 



Shansi: Tai pei shan, G. Giraldi, no. 1137, April, 1895 (ex Koehne, I.e.). 



Maximowicz refers Bunge's Amygdalus pedunculata y. polygyria to P. 

 Petzoldii (=P. triloba var. Petzoldii) but the flowers I have seen of the 



latter plant were not polygynous, while in/, multiplex they are occasionally 



so. 



Prunus triloba f. simplex, comb. nov. 



Amygdalus pedunculata a. simplex Bunge in M£m. Div. Sav. Acad. Sci. St. 

 Petersb. 11. 96 (Enum. PL Chin. Bor. 22) (1833). 



