THUJA. 403 



the bark, which is rather thin, is also used ia covering the 

 roofs of houses and other buildings. 



Thuja gigantea erecta, R. Smith, the Erect Giant 

 Arbor-Vitse. 

 Syn. Thuja Lobbii er^cta, Sort. 



This is a much closer and a more upright growing kind than 

 the species, and of a brighter green ; it is a nice and distinct 

 kind. 



Thuja gisantea VARIEGATA, HoH-., the Variegated Giant 



Arbor-Vitse. 



Syn. Thuja Lobbii variegata, Hort. 



This is a handsome, variegated variety, with a considerable 

 portion of the branchlets of a pale yellow colour, distributed 

 irregularly all over the plant. 



No. 3. Thuja Ocgidentalis, Linnaeus, the American 

 Arbor-Vitse. 

 Syn. Thuja Theophrasti, Bauhin. 

 „ obtusa, Mcench. 

 „ Cupressus Arbor-Vitse, I'argioni. 



Leaves very small, in opposite pairs, ovate-rhomboid, blunfc- 

 pointed, closely imbricated and flattened, thickly pressed along 

 the branchlets, in four rows, and with an elevated gland on 

 the back of the upper and under ones, which are the broadest, 

 while the marginal ones lap over on both sides ; those on the 

 older branches are more distant, acute, extended at the points, 

 decurrent, and of a dull yellowish green, strongly scented when 

 bruised. Branches distant, horizontal, and irregularly scattered 

 along the stem ; smaller ones drooping, and twisted in various 

 directions; branchlets spread out laterally, numerous, two- 

 edged, alternate, short, flattened, ramified, and covered with 

 numerous small leaves of a bright shining green colour. Cones 

 obovate, four lines long, solitary, on short foot-stalks, covered 

 D D 2 



