Whistling Pine Tree

Trees monoecious, up to 35 m tall, not suckering from roots. Trunk is straight, up to 70 cm d.b.h.; crown conical; bark scaly, adaxially red-brown on old trees. Ultimate branchlets, usually pendulous, grayish-green, 10-27 cm × 0.8-0.9 mm; articles (2.5-)4-9 mm.

Leaves erect and appressed to branchlets, (6 or)7(or 8) per whorl, lanceolate or triangular, 1-3 mm. Male inflorescences1-4 cm. Cones ellipsoid, 1.2-2.5 cm, grayish-green or yellowish-brown tomentose when young, glabrous at maturity, base, and apex truncate to obtuse; apex of bracteoles slightly obtuse or acute. Samaras 5-8 mm including wing. Fl. Apr-May, fr. Jul-Oct. 2n = 18