MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 



Croton gonzalezii, see Croton sonorae. 



Croton humilis L. 



O. berlandieri Torr. 

 Range: 17, 32. 

 Site : Dry, well-drained, sun. 

 Fruit: Capsule. 

 A small shrub ; occurs in sandy and other soils. 



Croton pringlei, see Croton sonorae. 



Croton sonorae Torr. 



C. pringlei Wats., O. gonzalezii Greenm. 

 Range: 10. 

 Site : Dry, sun. 

 Fruit : Capsule. 

 A small to large, much-branched shrub. 



Croton suaveolens Torr. 



Range: 11, 16, 17. 

 Site : Dry, sun. 

 Fruit : Capsule. 

 A small, stout, much-branched shrub. 



Croton trichocarpus, see Croton cortesianus. 



Croton torreyanus Muell. 



C. suaveolens oblongifolius Torr. 

 Range: 11, 17. 



Site : Dry, well-drained, sun. 

 Fruit : Capsule. 

 A small, slender shrub. 



Cupressus spp. Cypress. 



Evergreen, monoecious trees of comparatively little value commercially. 

 Seven species occur in North America, of which five are found in California 

 and two in the southern Rocky Mountain region ; propagation is by seed sown in 

 spring. 



Stomach records (in addition to specific records) : Four species of birds. 



Cupressus arizonica (Mast.) Greene. Arizona cypress. 



Range: 11, 14. 



Site : Dry, well-drained, sun. 



Fruit: Cone, ripe in September of the second season, persistent many 



years. 



A large evergreen tree ; rapid growing in good soil, slow growing in poorer 

 soils ; long-lived ; susceptible to fire ; wood valuable locally, durable when sea- 

 soned ; seeds remaining in unopened cones viable, at least for several years ; 

 germination percentage of seeds high, irregular ; seed produced abundantly 

 annually ; 100,000 seeds per pound ; much spread by cultivation. 



Cupressus bakeri, see Cupressus macnabiana. 

 Cupressus forbesii, see Cupressus guadaloupensis. 



Cupressus glabra Sudw. Smooth cypress. 



Range : 11, 14. 



Site : Well-drained, moist, sun, shade. 

 Fruit : Cone ; ripening at the end of the second season, persistent 



unopened 14-18 years. 



A large evergreen tree ; slow growing, long-lived ; wood of limited use com- 

 mercially, moderately durable; seed germination moderately high, vitality of 

 seed declining rapidly after fifth year. 



Cupressus goveniana Gord. Gowen cypress. 



C. pygmaea Sarg. 

 Range : 1. 



Site : Dry, well-drained, moist, sun, shade. 

 Fruit : Cone ; mature in September of the second season ; seeds shed 



September-October, cones persistent many years. 



A large shrub to small or rarely large trees ; evergreen ; slow growing, long- 

 lived; root system shallow; thrives on rocky or sandy soils; of no importance 



