198 THE nOTANIVAL MAaAZTNR. [Vol. xxxtii. No. so.-.. 



it may be readilj' distingiiisliable in having glabrous leaves and lacking 

 of glands at the base of laniinrc. The smallest leaves alike ttj those 

 of Populus trewula var. Davidiana, but the branchlets and petiols are 

 stouter and always green. It grows on dry soil among the woods 

 consisting of Alnas borealis, Alniis tinctoria, Salix caprea, Quercus 

 crispula, Betula j'aponica, Ulmus laciniata, Tilia japonica, Maackia 

 amurensis var. Bucrgerii and Juglans Sieholdiana etc. Populus tremula 

 var. Davidiana which is a commonest tree in North-Corea grows in 

 Hokkaido too. We have in our University Herbarium two specimens 

 collected at Moiwa Hill and the foot of mount Tokachidake. 



456) Asarum Sieboldii, Miquel Prol. Fl. Jap. (1866-7) p. 66. 

 var. seoulensis, Nakai in Fedde Repert. (1914) p. 267. 



A. Sieboldii, Maximowicz in Mel. Biol. VIH. (1871) p. 397 pp. 

 Nakai Fl. Kor. II. 175 pp. 



Nom. Jap. Ke-usuba-saishin. 



Hab. Manshuria austro-orient. ad Ussuri superiorera. Maio 

 1800 (Maximowicz). Specimen in Herbario Bogoriense servatum. 

 Nova in Flora Manshurica. 



457) Cercidiphylluni japonicum, Siebold ct Zuccakini in Abliandl. 

 Akad. Muencli IV. ])art 3, p. 238 (184G). 



var. magnificum, Nakai. 



A typo sequenti modo dignoscendum. 



Typicum. 



Cortex rami diametro ciix. 3-5 cm. jam longitudine fissns. Ramuli 

 graciles. Petioli gracilcs vulgo rubescentes 1-1.5 mm. crassi. Lamina 

 maxima 8—9 cm. longa et lata supra fere plana infra glauca venis 

 moderate elevatis. 



Magnificum. 



Cortex rami quam 20 cm. latioris longitudine findere incipit, ita 

 truncorum quam typicus multo brevius fissus semper cinercus. Ramuli 

 robusti. Petioli robusti virides 1.5—3 mm. crassi. Lamina maxima 

 13—14 cm. longa et lata supra distinctc rngulosa infra glauca vcnis 

 cximie elevatis. 



Nom. Jap. Uchiwa-katsura. 

 Hab. 



Hondo : in monte ShiTane et Konsei, Nikko (Takenoshin Nakai). 



This Ccrcidiphyllum is evidently different from C. Japonicum in 

 having larger leaves and ashy bark which does not split till it becomes 

 at least 20 years old. On the feet of cited mountains where Cercidi- 

 phylluni japonicum is growing, seldom comes to grow aside, then the 

 characteristics become more consjjicuous to our eyes. In Jtnic I have 



