Cupressus
chengiana S. Y. Hu var. jiangensis (N. Zhao) Silba
Tree: evergreen; erect; 27 m maximum
height; monoecious. Trunk: 1 m maximum diameter. Bark: grey, red,
or brown; peeling off in strands, or furrowed. Crown: dense; columnar to
narrowly or widely conical (pyramidal). Branches: ascending. Ultimate
branchlets: 1.1–2 mm wide; arranged
3-dimensionally, or in one plane; roundish in cross-section.
Leaves: only adult leaves on adult plants;
scaly. Scale leaves: 1–1.5 mm long; 0.5–1.5 mm wide; arranged
oppositely; medium – dark green, or green with coating (somewhat bluish);
closely appressed; only one type of leaves (no
differentiation in lateral and facial leaves = monomorphic); tip blunt; with
conspicuous, inconspicuous, or without glands; without white resin; dorsal side
rounded or keeled; tip curved inwards.
Male cones: 2–4 mm long; solitary;
12–16 male cone scales; 6–8 male cone scale whorls; oblong; yellow or bright
brown. Male cone scales: arranged oppositely; 2–6 pollen sacs per male
cone scale.
Female cones: 10–12 mm long; 5–10 mm
wide; 12 cone scales; depressed-globose, 2-lobed, globose, ovoid, or oblong;
cone-like (open after maturity); woody; not disintegrating after maturity;
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 near the tip. Columella: absent.
Seeds: 3–5 mm long; 2–4 mm wide; 10–240 seeds
per cone; bright – middle brown; 6–20 seeds per female cone scale; flattened. Seed
wings: 1–2 mm wide; 2 (almost) equal wings.
Supplement: maturity in the second
year; 2 cotyledones; 22 chromosomes (2n). Cultivation:
not cultivated in