The red bean tree is a tree, up to 30 meters high, with a diameter at breast height of 60-100 centimeters; the bark is gray-brown, reddish-brown, or dark brown, and splits into strips and falls off; the large branches are spreading, and the annual branches are green or yellowish-green;

They turn into a greenish-yellow or light reddish-brown color in the fall, and the two- and three-year branches are yellowish-brown, light reddish-brown, or grayish-brown; winter buds are yellowish-brown, light brown, or reddish-brown, and are glossy, and the bud scales are triangular-ovate, dorsally ridgeless or with longitudinal ridges, deciduous or few persistent at base of branchlets.

Leaves arranged in two rows, barred, slightly curved or straighter, slightly tapering distally, apex often slightly acute, sparsely acute or acuminate, dark green and glossy above, yellowish green below, with two stomatal bands, and densely uniform and minute rounded angular papillate projections on the midrib bands, often the same color as the stomatal bands.

Extended information:

Growth habit

The red bean tree is suitable for planting all over the north and south of China, and it has the characteristics of shade-loving, drought-resistant and cold-resistant, and requires a soil pH value of 5.5-7.0. Habitat is shade-tolerant, and it can grow in dense forests, and it is perennial and does not form forests.

Mostly found in mixed coniferous forests dominated by red pine. Born on the top of the mountain stony or barren soil, mostly shrubby. Mostly scattered on shady or semi-shady slopes under moist, fertile mixed coniferous forests.

Prefer cool and humid climate, can withstand temperatures below -30 ° C, cold resistance, optimal temperature 20-25 ° C, is a negative species. Like wet but afraid of flooding, suitable for planting in loose moist well-drained sandy loam.