1. Cupressus arizonica Greene, Bull. Torrey Bot. Club. 9: 64. 1882.
Arizona cypress, Arizona smooth cypress, Cuyamaca cypress, Piute cypress, cedro, cedro blanco, ciprés de Arizona
Cupressus arizonica var. glabra (Sudworth) Little; C. arizonica var. nevadensis (Abrams) Little; C. arizonica var. stephensonii (C. B. Wolf) Little; C. glabra Sudworth; C. nevadensis Abrams; C. stephensonii C. B. Wolf
Trees to 23 m, shrubby where subject to fires; crown conic at first, broadly columnar with age, dense. Bark smooth at first, remaining so or becoming rough, furrowed, fibrous. Branchlets decussate, 1.3--2.3 mm diam. Leaves usually with conspicuous, pitlike, abaxial gland that produces drop of resin, often highly glaucous. Pollen cones 2--5 ´ 2 mm; pollen sacs mostly 4--6. Seed cones globose or oblong, mostly 2--3 cm, gray or brown, often glaucous at first; scales mostly 3--4 pairs, smooth or with scattered resin blisters, sometimes with erect conic umbos to 4 mm, especially on apical scales. Seeds mostly 4--6 mm, light tan to dark brown, not glaucous to heavily glaucous. 2 n = 22.
Canyon bottoms, pinyon-juniper woodland, chaparral; 750--2000 m; Ariz., Calif., N.Mex., Tex.; Mexico.
Bark texture and foliage features have been used to distinguish geographic varieties or segregate species. Although bark texture may be consistent within populations, over the species as a whole there is complete intergradation between smooth and fibrous barks. Various forms are commonly cultivated and sometimes persistent in the southern United States.