Tree to 21.3 m tall. Needles 5-7.5 cm long, 3 mm wide (Tripp 1995).
Fu et al. (1999) report: "R. R. Mill considers the plants from Hainan (and possibly also those from Guangdong and Guangxi) to be separable as C. hainanensis H. L. Li (Lloydia 16: 164. 1953), which was placed in the synonymy of C. mannii by L. K. Fu (Acta Phytotax. Sin. 22: 281. 1984). Mill's comparison of the types and other material of both species suggests that they may be distinct taxa, with C. hainanensis differing as follows: leafy branchlets 8-10 × 4.5-5.5 cm in outline (not 11-19(-24) × 6-8(-9.5) cm); leaves borne at 70-80° to branchlet axis (not 45-70° ), parallel sided throughout (not tapered), stomatal bands 0.7-1.3 mm wide (not 1.2-1.6 mm), 2.5-4 × as wide as midvein (not 6-8 × ), apex abruptly and very shortly mucronate (not cuspidate); seed cones solitary (not 2 or 3 together)."
China: Hainan Island, perhaps also Guangdong and Guangxi, although those plants are here assigned to C. mannii in accordance with Fu et al. (1999). Hardy to Zone 9 (cold hardiness limit between -6.6°C and -1.1°C) (Tripp 1995, Bannister and Neuner 2001).
Seriously threatened in its home range due to logging for lumber and bark stripping for its content of anticancer alkaloids (Tripp 1995).
The species account at Threatened Conifers of the World.
H.L. Li. 1953. Lloydia 16(3):164.
Hiep, N.T. and J.E. Vidal. 1996. Fl. Cambodge, Laos et Vietnam 28: 115-118.
Last Modified 2017-12-29