怒江红杉 nu jiang hong shan

Larix griffithiana Carriere var. speciosa (W. C. Cheng & Y. W. Law) Silba; L. griffithii J. D. Hooker var. speciosa (W. C. Cheng & Y. W. Law) Farjon.

Trees to 25 m tall; bark dark red-brown, fissured, scaly; branchlets pendulous; long branchlets initially purplish brown or brown, occasionally glaucous, glabrous; short branchlets stout, 6-8 mm in diam., with several rings of revolute bud scales; winter buds red- or purple-brown, ovoid or conical. Leaves oblanceolate-linear, 2.5-5.5 cm × 1.5-2 mm, flat or keeled toward base adaxially, keeled abaxially, stomatal lines present on abaxial surface. Seed cones pedunculate (peduncle 5-7 mm), maturing red- or purple-brown, cylindric, 7-9 × 2-3 cm. Seed scales ca. 100, obovate-oblong or suboblong, 1.2-1.5 cm × 8-9 mm, densely pubescent and verruculose abaxially, base auriculate, apex truncate, emarginate. Bracts exserted, lanceolate, obliquely recurved, 3.5-4.5 mm at widest part, apex tapered. Seeds pale gray, with irregular yellow-brown spots, obliquely ovoid, ca. 5 mm; wing 5-7 mm. Pollination Apr-May, seed maturity Sep-Oct.

* Mountains; 2600-4000 m. SE Xizang, NW Yunnan