Cupressus duclouxiana Hickel
Tree: evergreen; erect; 60 m maximum
height; monoecious. Trunk: 0.8 m maximum diameter. Bark: red, or
brown; peeling off in strands, or furrowed. Crown: dense; columnar to narrowly
or widely conical (pyramidal). Branches: horizontal, or drooping. Ultimate
branchlets: 0.5–1 mm wide; 10–15 mm long;
arranged 3-dimensionally; quadrangular in cross-section.
Leaves: only adult leaves on adult plants;
scaly. Scale leaves: 1–2.5 mm long; 0.5–0.75 mm wide; arranged
oppositely; bright green, or green with coating (somewhat bluish); closely appressed; only one type of leaves (no differentiation in
lateral and facial leaves = monomorphic); tip blunt, or acute; with
conspicuous, inconspicuous, or without glands; without white resin; dorsal side
rounded; tip curved outwards.
Male cones: 4–7 mm long; 2–3 mm
wide; solitary; 12–20 male cone scales; 6–10 male cone scale whorls; globose,
ovoid, or oblong; yellow or bright brown. Male cone scales: arranged
oppositely; 2–6 pollen sacs per male cone scale.
Female cones: 12–30 mm long; 15–32 mm
wide; 6–10 cone scales; depressed-globose, 2-lobed, or globose; cone-like (open
after maturity); woody; not disintegrating after maturity; bluish, reddish, or
dark; young cones green with bluish coating. Female cone scales:
arranged oppositely; inserted on different levels in mature cones; without
several small additional cone scales on the female cone; tip blunt; with small
dorsal umbo; umbo more or less in the centre. Columella: absent.
Seeds: 3–5 mm long; 1–3 mm wide; 60–280 seeds
per cone; red, bright – dark brown, or black; 10–28 seeds per female cone
scale; flattened; tubercled; with conspicuous hilum. Seed
wings: 0.3–1 mm wide; 2 (almost) equal wings.
Supplement: maturity in the second
year; 2 cotyledones; 22 chromosomes (2n). Cultivation:
cultivated in