ROSACE AE. — PRUNUS 75 



Racemorum fructiferorum axes pedicellique haud vel vix incrassati nee insipni- 

 ter pallidc lenticellati. Folia subtus plus minus vel haud 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 Linn6 (inde ab 

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

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

 laya), P. diversifolia Koehne (Korea), P. brachypoda BataUn (Cliina, Tibet), P. 

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

 schuria, Sachalin, Japonia). 



An hujus sedis?: species koreanae P. seoulensis Leveill^, P. diamantinus L6veill6, 

 P. Fauriei Leveill6. 



Ser. 3. Gratopadus 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 

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

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



Species asiatica: P. Grayana Maximo wicz (China, Japonia) cum Padus acro' 

 phylla C. K. Schneider ehinensi verisimiUime nuUo modo diversa. 



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

 107 (1910). 



Folia decidua venarum reticulo isodiametrieo. 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). 



