1. Keteleeria hainanensis Chun & Tsiang, Acta Phytotax. Sin. 8: 259. 1963.
海南油杉 hai nan you shan
Keteleeria evelyniana Masters var. hainanensis (Chun & Tsiang) Silba.
Trees to 30 m tall; trunk to 2 m d.b.h.; bark light gray or yellowish brown, rough, irregularly and longitudinally fissured; crown conical; branchlets reddish brown in 1st or 2nd year, finally grayish brown or gray, glabrous. Leaves almost radially spreading, narrowly linear-lanceolate or lanceolate, 5-14 cm × 3-4(-9) mm, stomatal lines abaxial, 8-16 in each band, apex usually acuminate. Seed cones cylindric, 14-18 × ca. 7 cm, base usually narrowed. Seed scales at middle of cones rhombic-ovate, ca. 4 × 2.5-3 cm, exposed part glabrous abaxially, apex narrowed, ± emarginate. Seeds nearly triangular-ellipsoid, 1.4-1.6 cm × 6-7 mm; wing yellowish brown, semitrullate. Pollination Jan-Feb, seed maturity following winter.
* Hills, mountains; 1000-1400 m. Hainan
An endangered species. However, some authors regard it as representing the juvenile growth of Keteleeria evelyniana.