240 VARIETIES OF THUIA GIGANTEA. 



T. Menziesii, Douglas ex Carriers, Traite Conif. ed. II. 107 (1867). Gordon, 

 Pinet. ed. I. 323. 



T. Lobbi, Hort. 



Eng. Lobb's Arbor Vitae. Amer. Western Arbor Vitse, Red or Canoe Cedar of 

 Oregon. Fr. Thuia Geant de Californie. Germ. Riesens-Lebensbaum. Ital. Albero 

 de la Vita di Lobb. 



var. aurea. 



A large proportion of the foliage and young growths light yellow, 

 the colour being most conspicuous in the short lateral growths of the 

 terminal shoots and in the basal half of the branchlet systems next 

 below them. The aureo-variegata and aurescens of continental gardens 

 are apparently modifications of this variety. 



Fig. 72. Fruiting branchlet of Thuia giguntea reduced. 

 Strobile slightly enlarged. 



var. gracilis. 



A smaller tree with more slender branches and branchlets, especially 

 the latter, which are clothed with smaller scale-like leaves of a paler 

 green. 



Thuia gigantca is widely distributed over a large area extending in 

 a meridinal direction from southern Alaska at about latitude 55 

 north, along the coast range and islands of British Columbia to north 

 California, and laterally from the Eocky Mountains to the Pacific 

 Ocean. It attains its greatest development in the valley of the 

 Columbia river and around Puget Sound where trees have been seen 

 towering to a height of 150 to 200 feet, " sending up a mighty 

 shaft free of branches for upwards of 100 feet, from an enormously 

 enlarged base tapering gradually until at twice the height of a man 

 from the ground, its diameter may not be more than a dozen feet. 



