THE AMERICAN ARBOR VIT/E. 323 



No. 2. Thuja Menziesii, Douglas, Menzies Arbor Vitfc. 

 Syii. Thuja plicata, Lambert, not Donn. 

 „ „ Lobbii, Hort. 

 „ „ Lobbiana, Hort. 

 » » gigantea, Hooker, not Nuttall. 



Leaves, in alternate opposite pairs, closely imbricated, and 

 without any gland on the back ; those on the branches are more 

 distant, enlarged at the base, decurrent, and tapering to an 

 acute point, while those on the branchlets are very flat, closely 

 placed, regularly imbricated in four rows, much shorter, more 

 rounded, and furnished with a short spiny point ; the marginal 

 ones being more or less lanceolate, bristle-pointed, and lapping 

 over on each side, but extended at the points. Branches, 

 spreading, flat, more or less horizontal, irregularly scattered 

 along the stem, slender, and of a deep brown colour ; branch- 

 lets, flattened, short, slender, flexible, alternately two-rowed, 

 and nearly all on the inner side, quite straight, linear, and un- 

 divided. Cones, small, oval, tapering to both ends, nodding 

 and solitary at the extremities of the short branchlets, and very- 

 much resemble those of the common American Arbor Vitae, but 

 much more swelled in the middle, and more regularly attenuated, 

 or tapering to both ends, and with the scales much larger, more 

 tapering, and much rounder or obtuse at the apex. 



A fine graceful tree, found on the North-west coast of Ame- 

 rica and California, by Douglas, growing from forty to fifty feet 

 high, with long flexible branches, thickly clothed with branch- 

 lets. 



It is quite hardy. 



No. 3. Thuja Occidentalis, Linnaus, the American Arbor- 



Vitae. 

 Syn. Thuja Theophrasti, Bauhin. 

 „ „ obtusa, Mcench. 

 „ ,, odorata, MarsJL, 

 „ Cupressus Arbor-Vitae, Targioni-Tozzetti. 

 „ Thuja Sibirica, Linnaus' 



Leaves, very small, in opposite pairs, ovate rhomboid, blunt 



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