76 CONIFERS AND TAXADS OF JAPAN 



well Pinetum there is a handsome specimen of this Thuja planted in 1874 and now 

 13 m. tall. 



CHAMAECYPARIS Spach 



This genus is confined to the Atlantic and Pacific coast regions of North America 

 and to Formosa and Japan. Six species are now recognized; one (C. thyoides Britt.) 

 is confined to eastern North America and two (C. nootkatensis Lamb, and C. Law- 

 soniana A. Murr.) to western North America. In Formosa one species (C. for- 

 mosensis Matsum.) is endemic and a form of the Japanese C. obtusa S. & Z. also 

 grows wild there. The two Japanese species have in Japan given rise to many 

 abnormal forms and these are now familiar garden plants. These forms, many of 

 them dwarfs, are apt to give a wrong impression of the size to which the parent 

 trees and other species of this genus grow; it is well to remember that C. Law- 

 soniana A. Murr. exceeds 60 m. in height, that the two Japanese species are often 

 over 50 m. high and that C. formosensis Matsum. grows 65 m. tall with a trunk 

 20 m. in girth and exceeds in size all other conifers indigenous in the Old World 

 north of the Equator, its only rival being Cryptomeria japonica D. Don. 



KEY TO THE JAPANESE SPECIES 



Leaves obtuse, not glandular; cone about 1 cm. in diameter; seeds from 1 to 5 on 

 each scale C. obtusa. 



Leaves acuminate, obscurely glandular; cone about 0.7 cm. in diameter; seeds from 

 1 to 2 on each scale C. pisifera. 



CHAMAECYPARIS OBTUSA S. & Z. 



Plates LIV and LV 



Chamaecyparis obtusa Siebold & Zuccarini apud Endlicher, Syn. Conif. 63 

 (1847). Carriere, TraitS Conif. 136 (1855). Franchet & Savatier, Enum. PL 

 Jap. I. 471 (1875). Sargent, Forest Fl. Jap. 73 (1894). Shirasawa, Icon. Ess. 

 For. Jap. I. 25, t. 10, fig. 17-32 (1900). Matsumura, Ind. PI. Jap. II. pt. 1, 7 

 (1905). Mayr, Fremdl. Wold- u. Parkb. 277, t. 5, fig. 4 (1906). Beissner, Handb. 

 Nadelh. ed. 2, 554, fig. 141 (1909). Parde, III. Conif. t. 134, fig. 1 a-15 (1913). 



Retinispora obtusa Siebold & Zuccarini Fl. Jap. II. 38, t. 121 (1844). Lindley in 



Gard. Chron. 1861, 265. 

 Chamaepeuce obtusa Zuccarini ex Gordon, Pinet. suppl. 93 (as a synonym) (1862). 

 Retinispora Fusinoki Zuccarini ex Gordon, Pinet. suppl. 93 (as a synonym) (1862). 

 Cupressus obtusaK. Koch, Dendr. II. pt. 2, 168 (1873). Sargent, Silva N. Am. X. 



98 in a note (1896). Masters in Jour. Linn. Soc. XXXI. 355 (1896). Kent in 



Veitch, Man. Conif. ed. 2, 220, fig. 64 (1900). Elwes & Henry, Trees Gr. Brit. 



& Irel. V. 1185, t. 303, 304 (1910). Clinton-Baker, III. Conif. III. 52, fig. (1913). 

 Retinospora obtusa Gordon, Pinet. ed. 2, 367 (1875). Masters in Gard. Chron. n. 



ser. V. 235, fig. 41 (1876). Veitch. Man. Conif. 245, fig. 56 (1881). 

 Thuya obtusa Masters in Jour. Linn. Soc. XVIII. 491, fig. 4 (1881). 



I did not see this tree in a wild state north of the Kiso-gawa in Mino and Shinano 

 provinces, where it grows in mixed forests between 600 and 1300 m. above the sea 

 with Pinus densiflora S. & Z., P. parviflora S. & Z., Tsuga Sieboldii Carr., Sciadopitys 

 verticillata S. & Z., Abies firma S. & Z., Chamaecyparis pisifera S. & Z. and such 



