— 38 — 



22. Alnus japonica. Sieb. et Zucc. 



Fl. Jap. Fam. Nat. II. p. 230. Miq. Prol. Fl. Jap. p. 69. Sargent 

 Forest Fl. Jap. p. 63 t. 20. Shirasawa Iconogr. t. 9. f. 18-34. 

 Kom. Fl. Mansch. II. p. 60. Winkler Betul. p. 114.Nakai Fl. 

 Kor. II. p. 204. Call, in Schneid. Handb. I. p. 126. 



A. japonica var. genuina, Call, in Fedde Rep. X. p. 228. 



A. japonica var. minor, Miq. Prol. p. 69. 



A. maritima var. japonica, Regel in DC. Prodr, XVI. 2. p. 186. 

 Fr. et Sav. Enum. PI. Jap. I. p. 457. Matsum. Rev. p. 7. Palib. 

 Consp. Fl. Kor. II. p. 48. 



A. Harinoki Japon ex Sieb. Syn. PI. Oecon. Univ. Jap. (1827) p. 25. 



Arbor stricta usque 15 m alta. Ramuli juveniles glabri v. pilosi. 

 Folia distincte petiolata, petiolis 0.5-2.8 cm longis glabris v. pilosis, 

 laminis 2.5-12 cm longis oblongo-lanceolatis v. lanceolatis v. late- 

 lanceolatis v. ovato-lanceolatis v. oblanceolatis basi vulgo acutis v. 

 obtusis apice attenuatis rarius obtusis insequaliter v. subsequaliter 

 serrulatis, utrinque glabris v. pilosis. Inflorescentia £ ad apicem 

 rami annotini evoluta racemosa v. solitaria v. binata 4-9 cm longa, 

 florens in mense Feb.-Mart. Bractese. fuscse squamosa? Bracteolas 

 3 — 5 imbricatas ad bracteam adnatse. Flores in quaque bractea 3-4, 

 perigonii sagmentis oblongis 4, staminibus segmenta perigonii 

 oppositis 3-4, filamentis brevibus inclusis, antheris exertis 1 mm 

 longis bilocularibus flavis. Flores $- ad basin bracteae persistentis 

 dispositi bini et spicas erectas oblongo-ovatas formantes. Spica 

 fructifera 1.5-2 cm longa 1-1.3 cm lata. Fructus compressi late 

 oblongi v. obovati leviter alati fusci, stylis brevibus persistentibus 

 coronati. 



Hab. in montibus et secus flumibus v. in silvis Coreanas peninsulas. 



Distr. Yeso, Hondo, Shikoku, Kiusiu et Manshuria. 

 var. koreana, Call, in Fedde Rep. X. p. 229. 

 Rami juveniles foliaque rufo-villosula. 



Hab. in montibus Ouensan. 



Planta endemica. 



