The morphological characteristics of Chinese pine

Morphological characteristics

Tree, 8-10 meters high, up to 25 meters thin, was born in a wet environment, the base of the trunk is expanded into a column trough, and there are absorption roots extending out of the soil or water surface, column trough up to 70 cm, dry base diameter up to 60-120, centimeters, trunk twisted; bark brown or gray and brown, longitudinal split into irregular long strips; branches sparse, large branches nearly flat, upper branches obliquely stretched; short branches from the biennial buds of the top buds Or perennial branches of axillary buds stretch out, 8-18 cm long and fall off in winter; the main branch extends from the top buds of perennial and biennials and does not fall off in winter. Leaf type: scaly leaves thicker or dorsally abdomen, spirally born on perennial or current primary branch, about 2 mm long, with white stomata, winter does not fall off; bar-shaped leaves are flat on both sides, thin , Often listed in two columns, tip apex, base gradually narrow, 1-3 cm long, 1.5-4 mm wide, pale green, with stomatal bands on both sides of the midrib; strip-shaped rhomboid leaves flat on both sides, dorsiflexion, The apex is acuminate or blunt, slightly outwardly curved, 4-11 mm long, radiating out or out of three rows; the leaf-shaped leaves and strip-shaped rhomboid leaves are shed together with the lateral short branches in the winter. Conical ovate, 2-2.5 cm long, 1.3-1.5 cm in diam.; scales woody, flattened, obovate in middle, base cuneate, apex rounded, with 6-10 microrepellent at the proximal margin of scaly Triangular tines; scales and scales connate in pairs, apically only, triangular, reflexed, central or mid-upper at the back of the scales; seeds elliptic, slightly flattened, brown, 5-7 mm long , width 3-4 mm, long wings at the lower end, wings 4-7 mm long. 4-5 cotyledons, needle-shaped, 1.2-1.6 cm long, less than 1 mm wide, non-stomatal; primary leaf shape, ca. 2 cm, width 1.5 mm, whorled, opposite or alternate, main stem There are white dots. During the flowering period of 1-2 months, the cones ripen in the autumn.

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