388 THE BOTANICAL MAGAZINE. [Voi. xxvi. No. 312. 



(1867), p. 5 ; Miq. Prol. Fl. Jap. (1866-67), p. 263 ; Kegel, 

 Gartenfl. (1866), p. 229, tab. 516 ; K. Koch, Dendrol. I. (1869), 

 p. 359 ; Franch. et Sav. Enum. PI. Jap. I. (1875), p. 157 ; 

 Dippel, Handb. Laubholzk. III. (1893), p. 329, fig. 175; 

 Schneid. 111. Handb. Laubholzk. I. (1906), p. 383, fig. 245 a-1 ; 

 Matsum. Ind. PI. Jap. II. 2 (1912), p. 185. 



Platycrater arguta a typica Schneid. 1. c. 



Platycrater arguta /?. hortensis Maxim. 1. c. 



Nom. Jap. Baikwa-amacha, Alokko-bana. 



Hab. Japan, southern. 



By L. Dippel, Viburnum serratum Thunb. was thought as 

 the same species with Hydrangea Thunbergii Sieb. (=H. opu- 

 loides Steud. van Thunbergii Makino.=IZ'. hortensis Sm. var. 

 Thunbergii Boissieu.) and it was altered into Hydrangea ser- 

 rata b^' Seringe (in DC. Prodr. IV. p. 15), K. Koch (Dendro- 

 logie, I. p. 357), and Dippel (Handb. Laubholzk. III. p. 325), 

 but the Thunberg's plant, carefully judging from his descriptions, 

 should be identified with Platycrater arguta Sieb. et Zucc. as I 

 did above. 



Hydrangea cuspidata (Thunb.) Makino, non Miq. 



Viburnum cuspidatum Thunb. Fl. Jap. (1784), p. 125 ; 

 Willd. Sp. PI. L (1797), p. 1491 ; Pers. Syn. PI. L (1805), p. 

 327 ; Schult. Syst. Yeg. VI. (1820), p. 636 ; Spreng. Syst. Veg. 

 I. (1825), p. 934. 



Hydrangea involucrata Sieb. Syn. Hydr. in Nov. Act. Nat. 

 Cur. XIV. 2 (1829), p. 691 ; Sieb. et Zucc. Fl. Jap. I. (1826), p. 

 118, tab. 63 et 64 II, et in Abhandl. Akad. Muench. IV. 2 

 (1846), p. 192 ; Ser. in DC. Prodr. IV. (1830), p. 666 ; Walp. 

 Repert. II. (1843), p. 376 ; Hoffm. et Schult. in Journ. Asiat. 

 (1852), p. 299, n. 281; Miq. Prol. Fl. Jap. (1866-67), p. 262 ; 

 Maxim. Revis. Hydr. As. Orient. (1867), p. 10 ; K. Koch, 

 Dendrol. L (1869), p. 357 ; Franch. et Sav. Enum. PI. Jap. I. 

 (1875), p. 150 ; Dipp. Handb. Laubholzk. III. (1893), p. 316, 

 fig. 168 ; Schneid. 111. Handb. Laubholzk. I. (1906), p. 388, fig. 

 250 a-e^ ; Matsum. Ind. PI. Jap. II. 2 (1912), p. 178. 



