ROSACE AE . — PRUNUS 27 1 



111. Prunus cinerascens Franchet in Nouv. Arch. Mus. Paris, 8(5r. 2, VIII. 216 

 (PI. David. II. 34) (1S85). 



Western Szech'uan; Mupin, April 1869, A. David. 



Batalin (in Act. Hort. Petrop. XIV. 323) says that probably Prunus cinerascens 

 cannot be separated from P. tomentosa Thunberg. At present I prefer not to unite 

 these two species, because the pedicels of P. cinerascens are longer than in any 

 other of the numerous forms of P. tomentosa (in P. Batalinii Koehne they attain 

 4.5-6.5 mm. in length) and because the ovary with the exception of the very apex 

 is quite glabrous, which is not the case in the two other species. 



112. Prunus Jacquemontii (Edgeworth) Hooker f., Fl. Brit. Ind. II. 314 (1878). 

 Afghanistan, Northwestern Himalaya, Tibet. 



113.1 Prunus incana (Pallas) Steven in Mem. Sac. Nat. Mosc. III. 263 (1812). 



Armenia, Georgia, Himalaya? 



Cf. Cerasus hlppophaeoides Bornmuller in Oester. Bot. Zeit. XLIX. 15 (1899). 



Cappadocia. 



114. Prunus Griffithii (Boissier) Schneider, III. Handh. Laubhohk. I. 606 (1906). 

 Afghanistan. 



115. Prunus prostrata Labillardicre, Icon. PI. Syr. I. 15. t. 6 (1791). 

 Southern Europe, Crete, Algier, Western Asia to Persia and Syria. 



Cf. Prunus bifrons Fritsch, Sitz. Akad. Wien, CI. pt. I. 636, t. 3, fig. 1. (1892). 

 Himalaya? 



116. Prunus brachypetala (Boissier) Walpers, Ann. I. 272 (1848-49). 

 Southern Persia. 



117. Prunus microcarpa C. A. Meyer, Verz. Pfl. Caucas. Casp. 166 (1831). — 

 Stapf in Bot. Mag. CXXXVII. t. 8360 (1911). 



Caucasia, northern Persia. 



Cf. Cerasus tortuosa Boissier & Haussknecht in Boissier, Fl. Or, II. 647 (1872). 



Antilibanon, Cappadocia, Kurdistan. 



118. Prunus verrucosa Franchet in Ann. Sci. Nat. s6r. 6, XVI. 280 (1883). 

 Tm-kestan. 



Cf. Prunus calycosus Aitchison & Hemsley in Trans. Linn. Soc. III. 61, t. 8 

 (1888). 

 Afghanistan, Badghis district. 



119. Pnmus diffusa (Boissier & Haussknecht) Schneider, III. Handh. Laub- 

 holzk. I. 606 (1906). 



Southwestern Persia. 



1 This and the following species I have not yet studied, and I therefore follow 

 Schneider, III. Handh. Laubholzk. I. 601-606 (1906). 



Subgen. AMYGDALUS. 



Pnmus dehiscens Koehne, n. sp. 



Frutex densissimus 2-4-metralis, spinosissimus, fructibus exceptis 

 glaberrimus; rami hornotini fuscescentes, vetustiores cinerei, deinum 

 fusci, rigidi; ramuli patentes, in spinas 3.5-6 cm. longas commutati; 

 gemmae 2 mm. longac. Folia plcraque fasciculata; stipulae ignotae; 

 petioli 2-8 mm. longi, tenues, eglandulosi; lamina e basi acuta v. 



