CONE-BEARERS. 73 



from a thick, hollow base, hence defective for wide 

 lumber, but highly prized for dugout boats; also the 

 wood, being very durable, is largely used for shingles, 

 clapboards, etc. 



Ninth Genus, LIBOCEDRUS ' 



INCENSE CEDAR. 



Cones oblong, f to 1 inch long; fertile scales 2, 

 equal in size, thick, convex; seeds 4, long-winged. 



No. 1 Post Cedar - decurrens, Torrey. 



Beautiful and very valuable trees of California 

 mountains. Most of the trees affected within- by a 

 fungus dry rot which, however, does not materially 

 injure the timber for use as posts, ties, etc. 



Two oriental genera: Thuyopsis and Biota, belong to the 

 same group (Arbor-Vitse), and are often found in cultiva- 

 tion on the Pacific Coast, being small, pyramidal trees, 

 with close foliage, often beautifully variegated. 



Second Pair True Cypresses. 



Cupressi. 



Cones globular and the scales ob-pyramidal and 

 peltate, frequently with prominent bosses of ears, the 

 vestiges of the reduced scale-tips. Heart-wood yel- 

 lowish. Two genera: 



