ENUMERATION OF CONIFERS 207 



2. CUPRESSUS, L. C\TRESS 



Evergreen trees, rarely shrubby, with aromatic foHage, the bark usually 

 separating in long shred-like scales; branclilets quadrangular or terete, rarely 

 compressed: leaves opposite, small, scale-like, appressed, minutely denticu- 

 late-ciliate, on young seedling plants linear-subulate and spreading: flowers 

 monoecious, minute, solitary on short branclilets, the two sexes on separate 

 branches; staminate ovate or oblong, yellow, composed of 6-1 '2 decussate 

 stamens; fertile flowers subglobose: cones globular or nearly so, consisting of 

 3-7 pairs of ligneous peltate scales, with a mucro or boss on the flattened 

 apex, each bearing many or numerous seeds, but the lower scales usually 

 sterile and smaller; they ripen the second year. {Cujrressus is the ancient 

 Latin name of the cypress-tree, derived from the Greek kuparissos.) — 

 About 12 species in Pacific North America and Mexico and in the Old World 

 from southeastern Europe to the Himalayas and China. 



Many species are favorite ornamental trees in warm-temperate and 

 subtropical regions. In their native countries most of the species are 

 valuable timber trees; their wood is close-grained and very durable in the 

 soil and in water. 



A. Branchlets irregularly ramified, the ultimate bi-anchlets 

 not in one plane. 

 B. Apex of leaves obtuse or obtusish, dark green. 



c. Leaves not at all or not conspicuously glandular: cones 

 1-1} 2 inches across. 

 D. Length of leaves -^ inch: staminate flowers with 



10-12 stamens 1. C. sempervirens 



DD. Length of leaves xe inch: staminate flowers with 



6-8 stamens 2. C. macrocarpa 



cc. Leaves conspicuously resinous-glandular: cone %-l 



inch long 3. C. Macnabiana 



BB. Apex of leaves acute. 



c. Leaves dark green: usually small tree or shrub with 

 ascending or spreading branches: cone }/i-l inch 



across 4. C Goveniana 



cc. Leaves pale bluish-green or glaucescent: cone ^-\yi 

 inches across. 

 D. Branches upright or spreading; branchlets terete. 

 E. Color of branchlets bright red, slender: leaves 



wath small gland-pits 5. C. guadalupensis 



EE. Color of branchlets gray, stout: leaves glandless 



or conspicuously resinous-glandular 6. C. arizonica 



DD. Branches spreading, drooping at the extremities; 



branchlets slightly compressed 7. C. lusitanica 



AA. Branchlets regularly pinnately ramified, ultimate branch- 

 lets in one plane, slender, drooping. 

 B. Cone 14-^ inch across: branchlets not or slightly com- 

 pressed. 



