1, Hongfeng
Small deciduous trees. The trees are open and the branches are slender. The bark is smooth and grayish brown. Single leaves are opposite, often clustered at the top of branches. Leaves palmately divided with 5-9 lobes. Lobes are deeply divided to the base of leaves, lobes are ovate or lanceolate, and the leaf margin is sharply serrated.
2. Castanea henryi
Small deciduous trees. The bark is dark gray. Branchlets are thin; Annual branches are purple or light purple-green; Perennial branches are grayish purple or deep purple.
Leaves papery, round in appearance, 6- 10 cm in diameter, heart-shaped or nearly heart-shaped, 5-9 palmately divided, usually 7-lobed, lobes oblong-ovate or lanceolate, apex acute or long-acute, and margin subacute.
The cavity between lobes is blunt or sharp, as deep as 1/2 or1/3 of the blade diameter; It is dark green and hairless; Light green below, with white tufts at the axils of veins; The main vein is slightly prominent above and convex below; Petiole 4-6 cm long, thin, glabrous.
Second, the growth environment is different.
1, Hongfeng
Subtropical tree species prefer humid, warm climate and cool environment, are more resistant to shade and cold, and avoid sun exposure, but they can grow in full light in spring and autumn. The soil requirement is not strict, it is suitable for growing in fertile acidic or neutral sandy loam rich in humus, and it is not tolerant to waterlogging.
2. Castanea henryi
Born in forest margins or sparse forests at an altitude of 200- 1200m. Hi is distributed in 30-40 degrees north latitude, cold-resistant area 5.
Like cool environment, afraid of sun exposure in summer, strong cold resistance, can tolerate dry climate conditions. Most of them are born in wet valleys on shady slopes, and they are resistant to acid and alkali, drought and waterlogging. No matter where they go, they will not grow well under sunshine and tidal wind. Suitable for wet and humus-rich soil.
Third, the distribution range is different.
1, Hongfeng
Mainly distributed in subtropical China, Japan and South Korea, especially in the Yangtze River valley, cultivated in most parts of the country.
The main bases are Jiangsu, Zhejiang, Anhui, Jiangxi, Shandong, Hunan and Hebei.
American red maple is distributed in the United States, from Florida coast to Texas, Minnesota, Wisconsin and most parts of Canada.
2. Castanea henryi
Distributed in China, Shandong, southern Henan, Jiangsu, Zhejiang, Anhui, Jiangxi, Hubei, Hunan, Guizhou and other provinces. South Korea and Japan are also distributed. Type specimens were collected from Japan.
Baidu encyclopedia-Hongfeng
Baidu encyclopedia-Castanea henryi