74 CONIFERS AND TAXADS OF JAPAN 



an area of some 25,000 acres where this Thujopsis grows mixed with Fagus Sieboldii 

 Endl. and Quercus mongolica, var. grosseserrata Rehd. & Wils. On the borders of 

 southern Mutsu and northeast Ugo provinces this Thujopsis grows with Cryptomeria 

 japonica D. Don. 



The forestry officials at Aomori told me that this Thujopsis grows best from 

 cuttings, not from seeds. Shoots taken from free-growing trees and about as thick 

 as the little finger if inserted in soil in May will form roots in a month and are 

 ready for planting in permanent positions on the mountain-sides at the end of a 

 year. The trees grow slowly and the growth is often strongly excentric. On a 

 piece of this wood 15 cm. across I counted 103 annual rings. It is worthy of 

 mention that many trees have a nearly smooth red-brown bark which makes the 

 trunk look distinct. The forestry officers at Aomori are doubtful if there are not 

 two forms of the var. Hondai. Both grow together; the cones are identical, and I 

 could discover no difference between them except in the appearance of the bark. 



I collected seeds of the var. Hondai and young plants raised from them are 

 growing freely in this Arboretum. It is top early as yet to form any opinion, but 

 I am hopeful that this northern variety will prove hardy here. The Japanese 

 name for this tree is Hinoki-asunaro. 



THUJA L. 



Five species of this genus are known, two in North America and three in east- 

 ern Asia. Of the American species T. occidentalis L. is widely distributed from 

 Nova Scotia and New Brunswick northwestward to the mouth of the Saskatchewan 

 River and southward over a large area to southern Virginia and northeastern 

 Tennessee. The other (T. plicata D. Don) is found from Yas Bay in Alaska 

 southward along the coast ranges to Mendocino County, California, and eastward 

 to the western slopes of the mountains of Idaho and of northern Montana. Of 

 the Asiatic species T. orientalis L., which differs markedly in its wingless seed, is 

 much planted in China generally and its range as a wild plant is not properly under- 

 stood. It is known to be indigenous in Korea, Mandshuria and northeastern China 

 and may have a wider range in that country. The second Chinese species, T. sutchu- 

 enensis Franch, is very imperfectly known and only from northeastern Szech'uan. 

 The Japanese species also grows in Korea. 



THUJA STANDISHII Carr. 



PLATES LII AND LIII 



THUJA STANDISHII Carriere, Traiti Conif. ed. 2, 108 (1867). Gordon, Pinet. 

 ed. 2, 408 (1875). Masters in Gard. Chron. n. ser. X. 397 (1878); XIII. 589, 

 fig. 102 (1880). Veitch, Man. Conif. 263 (1881). Sargent, Silva N. Am. X. 

 124 in a note (1896). Beissner, Handb. Nadelh. ed. 2, 515 (1909). Nakai in 

 Jour. Coll. Sci. Tokyo, XXXI. 382 (Fl. Kor. pt. 2) (1911). 



Thuiopsis? Standishi Gordon, Pinet. suppl. 100 (1862). Bailly in Rev. Hort. 

 1896, 160, t. 



Thuja japonica Maximowicz in Bull. Acad. Sci. St. Petersbourg, ser. 3, X. 490 (1866); 

 in Mel. Biol. VI. 26 (1866). Masters in Jour. Linn. Soc. XVIII. 486 (1881); in 

 Gard. Chron. ser. 3, XXI. 258, fig. 87 (1897). Sargent, Forest Fl. Jap. 72 (1894). 



