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Macnab cypress, Macnab's cypress

Arizona cypress, Arizona smooth cypress, cedro, cedro blanco, ciprés de Arizona, Cuyamaca cypress, Piute cypress

Habit Trees to 23 m, shrubby where subject to fires; crown conic at first, broadly columnar with age, dense.
Bark

rough, furrowed, fibrous.

smooth at first, remaining so or becoming rough, furrowed, fibrous.

Branchlets

comblike, 0.5–1 mm diam.

decussate, 1.3–2.3 mm diam.

Leaves

with conspicuous, pitlike, abaxial gland that produces drop of resin, sometimes glaucous.

usually with conspicuous, pitlike, abaxial gland that produces drop of resin, often highly glaucous.

Pollen cones

2–3 × 2 mm;

pollen sacs 3–5.

2–5 × 2 mm;

pollen sacs mostly 4–6.

Seed(s)

cones globose, mostly 1.5–2.5 cm, brown or gray, not glaucous;

scales 3–4 pairs, smooth except for erect conic umbos, 2–4 mm.

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.

Shrubby

trees to 12 m;

crown broadly conical, dense.

2n

= 22.

Cupressus macnabiana

Cupressus arizonica

Habitat Chaparral and foothill woodland, often on serpentine Canyon bottoms, pinyon-juniper woodland, chaparral
Elevation 300–850 m (1000–2800 ft) 750–2000 m (2500–6600 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
from FNA
AZ; CA; NM; TX; Mexico
[WildflowerSearch map]
Discussion

In the inner north Coast Ranges Cupressus macnabiana and C. sargentii produce the only known natural hybrids in Cupressus (L. Lawrence et al. 1975).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 2. FNA vol. 2.
Parent taxa Cupressaceae > Cupressus Cupressaceae > Cupressus
Sibling taxa
C. arizonica, C. bakeri, C. goveniana, C. guadalupensis, C. macrocarpa, C. sargentii
C. bakeri, C. goveniana, C. guadalupensis, C. macnabiana, C. macrocarpa, C. sargentii
Synonyms C. arizonica var. glabra, C. arizonica var. nevadensis, C. arizonica var. stephensonii, C. glabra, C. nevadensis, C. stephensonii
Name authority A. Murray bis: Edinburgh New Philos. J. ser. 2, 1: 293, plate 11. (1855) Greene: Bull. Torrey Bot. Club 9: 64. (1882)
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