EOSACE AE . PRUNUS 7 5 



Racemorum fructiferorum axes pedicellique baud vel vix incrassati nee insigni- 

 ter pallide lenticellati. Folia subtus plus minus vel baud papillosa. Cupula intus 

 plerumque saltern basi pilosa, rarius glabra. Stamina (14-) 20-35. Stylus brevis. 



Species americanae: P. virginiana Roemer (Amer. bor.), P. demissa Nuttall apud 

 Torrey and Gray (Amer. bor.). Europaeo-asiaticae : P. Padus Linne* (inde ab 

 Europa usque ad Sachalin). Asiaticae: P. cornuta Steudel (inde ab Afghanistan 

 usque ad Sikkim), P. anadenia Koehne (Afghanistan), P. glaudfolia Koehne (Hima- 

 laya), P. diversifolia Koehne (Korea), P. brachypoda Batalin (China, Tibet), P. 

 velutina Batalin (China), P. bicolor Koehne (China), P. ssiori F. Schmidt (Mand- 

 schuria, Sachalin, Japonia). 



An hujus sedis?: species koreanae P. seoulensis Leveille*, P. diamantinus L6veill6, 

 P. Fauriei Leveille. 



Ser. 3. GRAYOPADUS Koehne in Abhand. Bot. Ver. Brandenburg, LII. 107 

 (1910). 



Sect. Eupadus Koehne, Deutsche Dendr. 303 (pro parte) (1893). 



Axes racemorum pedicellique fructiferi nee incrassati nee lenticellati. Folia 

 subtus haud papillosa in dentibus infimis biglandulosa (ut in subsect. Calycinia). 

 Cupula intus glaberrima; stamina circ. 22-26; stylus longus. 



Species asiatica: P. Grayana Maximowicz (Chuia, Japonia) cum Padus aero- 

 phylla C. K. Schneider chinensi verisimillime nullo modo diversa. 



Subsect. 5. MAACKIOPADUS Koehne in Abhand. Bot. Ver. Brandenburg, LII. 

 107 (1910). 



Folia decidua venarum reticulo isodiametrico. Pedunculi nudi; bracteae per- 

 sistentes. Calyx magis campanulatus quam in subsect. 1-4, fructifer deciduus; 

 stamina c. 20-30; stylus longus stamina aequans v. paullo superans. 



Species omnes asiaticae: P. Maackii Ruprecht (Mandschuria, regio amurensis), 

 P. laxiflora Koehne (China). 



