ໄມ້ແປກສາມຍອຍ / Three-needled Pine
APA 6th ed. ໄມ້ແປກສາມຍອຍ / Three-needled Pine. (2019, April 3). Retrieved from https://www.phakhaolao.la/kb/0000205
MLA 8th ed. ໄມ້ແປກສາມຍອຍ / Three-needled Pine. Pha Khao Lao, 3 April 2019, https://www.phakhaolao.la/kb/0000205.
Chicago 17th ed. Pha Khao Lao. 2019. "ໄມ້ແປກສາມຍອຍ / Three-needled Pine." Published April 3, 2019. https://www.phakhaolao.la/kb/0000205.
Pinus insularis var. khasyana (Griff.) Silba
Pinus kasya Parl.
Pinus kasya Royle ex Parl.
Pinus khasia Engelm.
Pinus khasya Hook.f.
Pinus khasyana Griff.
Lao: Paek sam bai
Vietnamese: Thông ba lá
Tree to 35 m tall and 1 m dbh with spreading yellowish–brown branches forming broadly domed crown. Bark orange–brown, later dull gray–brown, irregularly flaking. Leaves 3 per fascicle, 10–22 cm long, slender, rigid, base with persistent sheath 1–2 cm long. Pollen strobiles ovoid, later fusiform light orange–yellow, clustering near branchlet apex. Seed cones 1–2, on short stalk, glossy olive green to gray–brown, ovoid to conic, 4–6 cm long, 3.0–3.5 cm in diameter, persistent for many years; scales oblong, 2.5–3.0 cm long, with pyramidal, transversely ridged apophysis, umbo small, shortly apiculate. Seeds winged, black–brown, 5–6 mm long. Pollination April–May, seeds September–November. (Averyanov et al. 2014)
The soft and light wood is commonly used as timber, in housing implements and constructions, for boxes, matches, paper pulp, board-making, window or door frames, old- and slow-growing trees which develop red heartwood are chipped and used as torches sold in the local market, used for furniture, temporary electric poles, sometimes used as firewood. Resin good but not abundant, therefore not yet economically exploited.