Chinese literary name: Pinus koraiensis
Latin scientific name: Pinus koraiensis Sieb. et Zucc.
Alias: Pinus koraiensis, Pinus koraiensis, Pinus koraiensis, Pinus koraiensis
Two Families: Pinus koraiensis: Pinaceae: Pinus species: Name and age of Pinus koraiensis: Sieb. et Zucc. 1861
Korean Pine
Pinus koraiensis Sieb. et Zucc. gymnosperms, evergreen trees, up to 40 meters high. Branchlets densely brown pubescent. Leaves 5 needles a bunch, thick and hard, resin canal 3, sheath early fall. The cone is oval-conical, with blunt apex of seed scales, which are reversed outward, and the seeds do not fall off at maturity. Seeds large, 1.2-1.6 cm long, wingless. From Changbai Mountain to Xiaoxing'an Mountains in Northeast China, it often forms mixed forests with Pinus ichthyosus and Picea koraiensis. Strong cold resistance, like slightly acidic soil or neutral soil. The wood is light and soft, fine, straight texture and strong corrosion resistance, which is a good material for building, bridge, sleeper and furniture; the bark can extract tannin extract, the trunk can extract pine resin; the seeds can be used for edible or medicinal purposes, and the oil can be pressed for edible and industrial purposes. It is the main afforestation tree and ornamental tree.
Pinus koraiensis is an evergreen tree of Pinaceae with a height of 30 meters and a diameter of 1 meter at breast height; the bark of young trees is grayish-brown, nearly smooth, and the bark of large trees is grayish-brown or gray, with irregular rectangular scaly patches split lengthwise, showing reddish-brown endodermis after the lobes fall off; the upper part of the trunk is often branched, branches are nearly flat, and the crown is conical; the annual branches are densely covered with yellowish-brown or reddish-brown pubescence; the winter bud The bud scales are loosely arranged. [2]
Needles 5 needles in a bundle, 6-12 cm long, thick, straight, dark green, with fine serrated edges, usually without stomatal lines on the back, 6-8 pale blue-gray stomatal lines on each side of the ventral surface; transverse section nearly triangular, subcutaneous cells monolayer, but between the two resin channels on the back there are often intermittent distribution of 1-3 or more cells wide of the second subcutaneous layer, resin channels 3, middle, located in three. Corner; sheath falling early. [2]
Male cones are oval-cylindrical, reddish-yellow, 7-10 mm long, mostly densely spicate at the lower part of new branches; female cones are green-brown, cylindrical-oval, erect, solitary or several clustered near the apex of new branches, with long thick pedicels. Conical oval, conical oval or oval rectangular cone, 9-14 cm long, sparse and longer, 6-8 cm in diameter, 1-1.5 cm in pedicel length, mature seed scales do not open, or slightly open to reveal the seeds, but the seeds do not fall off. [2]
Seed scales rhombic, narrow and spreading at upper part, obtuse at apex, retrorse outward, yellowish-brown or microstrip grayish-green scales, triangular or oblique triangle, truncated or slightly wedged at lower part, wrinkled on surface, not prominent at scale umbilicus; seeds large, occurring in grooves at lower part of ventral (upper) face of seed scales, wingless or apical and upper sides slightly ridged, dark purple-brown or brown, obovate. Cotyledons 13-16, needle-shaped, transverse triangular, 3.8-5 cm long, 1.5 mm wide, apex pointed, margin serrated; primary leaves 1.3-1.6 cm long, less than 1 mm wide, margin serrated.