THE INCENSE CEDAE. 181 



LiBOCKDEus Chilensis vrRiDis, Hcyrt. 

 Syn. Libocedrus excelsa, H(yn. 

 This variety only differs from the species in having bright 

 green leaves, and entirely free from the glaucous bands on the 

 leaves and branchlets. 



No, 2, LiBOCEDEUS DECUERENS, Torrey, the Decurrent-leaved 



Arbor-Vitae. 



Syn. Libocedrus Craigiana, Low. 



„ „ gigantea. Low. 



„ „ „ glauca, Lamsim, 



„ Thuja NuttaUiana, Douglas. 



„ „ Craigiana, Jeffrey. 



„ „ „ glauca, Lawson. 



» » gigantea, Hort., not Nuttodl. 



Leaves on the young plants awl-shaped, somewhat lanceo- 

 late, decurrent at the base, extended at the apex, and sharp- 

 pointed, loosely imbricated in four rows, thickly set on the 

 branchlets in opposite pairs, the outer pair or marginal ones 

 being longest, and folded partially over the inner pair on both 

 sides, giving the young shoots a jointed, trident-like appear- 

 ance. Leaves on the adult plants very small, scale-formed, 

 one-twelfth of an inch long, and one twenty-fourth of an inch 

 wide, ovate, blunt-pointed, thick in texture, in close opposite 

 pairs, rather distant along the branchlets, pale green, and 

 shining, the marginal ones overlapping the sides, and having 

 the appearance of being in three rows on each side. Branches 

 rather erect, long, slender, and spreading laterally, with nume- 

 rous smaller ones. Branchlets short, flattened, channelled 

 along the sides, distantly jointed, proliferous, short, and 

 alternate. Cones erect, solitary on the ends of the upper 

 branchlets, oblong, tapering to the points, one inch or more 

 long, and half an inch wide near the base, and composed of 

 two opposite pairs of scales, with a flat one down the middle, 



