The Cypresses 97 



an ornament it is well known in Europe and in the eastern States. A dwarf form 

 is also known in cultivation. It is also called Pacific arbor- vitae, Arbor-vitae, Lobb's 

 Arbor-vitae, Pacific red cedar, Red cedar, Gigantic red cedar, Gigantic cedar, 

 Western cedar, and Shinglewood. 



XL THE CYPRESSES 



GENUS ODPRESSUS [TOURNEFORT] LINN^US 



ijUPRESSUS comprises about 12 species of scaly- leaved eveigreen trees 

 or shrubs with naked buds, natives of western North America, Mexico, 

 southern Europe, and Asia. 

 They have opposite, paired leaves, taper-pointed, blunt or rarely 

 rounded at the apex, the tips spreading or appressed; they are rounded and some- 

 times glandular on the back, turn brown and become thick before falling; on vig- 

 orous twigs and young plants they are longer, narrower, and sometimes spreading. 

 Their monoecious flowers are borne at the ends of the twigs, the two kinds being on 

 different branchlets; the staminate flowers are generally oblong, composed of many 

 yellow opposite stamens, their filaments short, the coimectives mostly broader than 

 long, anther-cells 2 to 6, nearly globular; the pistillate flowers are ovoid to nearly 

 globular, with 5 to 10 opposite scales bearing many ovules. Cones globose, ripen- 

 ing and shedding the seed the second year, after which they remain on the branches 

 for some time; they are composed of a few thickened scales which are abruptly 

 enlarged and flattened at the apex, with a thickened pyramidal projection; the 

 seeds are numerous, erect, borne under the cone scales; -they are thick, sharply 

 angular, somewhat flattened, their wings thin; cotyledons 2 to 4. 



These trees are very resinous, and some species furnish close, durable, fragrant 

 woods. As ornamental trees or shrubs they are frequently planted, especially, in 

 warm regions; the old world Cypress, Cupressus sempervirens Lirmaeus, is the type 

 of the genus. The generic name is Greek. 



In our area they are confined to the states of California and Arizona. One 

 species occurs in Lower California and two or three others in Mexico. 



Leaves dark green, not glaucous, or but slightly so. 

 Leaves glandless or but obscurely glandular. 

 Fruit 2.5 to 3.5 cm long. i. C. macrocarpa. 



Fruit 1.5 to 2 cm. long. 

 Twigs slender; seed light brown. 2. C. Goveniana 



Twigs stout; seed black. 3. C. pygmaa. 



Leaves with a distinct gland on the back. 4. C. Macnabiana. 



Leaves pale, glaucous, not glandular or obscurely so. 5. C. arizonica. 



