Who can compare the difference between Pinus massoniana and Pinus tabulaeformis and Pinus thunbergii?

Black pine, evergreen tree, up to 30 meters high, with gray-black bark. Two needles are clustered, thick, and the new buds are white. Each needle is about 6 ~ 15 cm long, and its cross section is semicircular. There are three resin pipe in mesophyll, and the leaf sheath consists of more than 20 scales, about 65438±0.2cm long. April flowers, single flowers. The female flower is born at the top of the new bud and is purple. Most kinds of scales (carpels) are arranged in a spherical shape. Each species has two bare blastomeres at its base. The base of male peanut buds is yellow, and most of them are male. When they mature, most of the pollen floats out with the wind. In the autumn of the following year, cones were formed, scales cracked, seeds scattered and seeds with thin wings. Pinus tabulaeformis, 25m high, DBH about1m; The crown of the tree is tower-shaped or oval in its prime, and disc-shaped and umbrella-shaped in its old age. Bark is grayish brown, scales are cracked and cracks are reddish brown. The upper branches are thick, hairless and brownish yellow; Winter buds are round, pointed and reddish brown, and there are usually 3-5 lateral buds next to the terminal buds. There are 2 needles 1 in the leaf gear, 3 needles 1 in the rare gear, 0/0-15 cm in the length, and more than 5-8 resin channels with edges; Leaf sheaths persist. The male cones are orange and the female cones are green and purple. At that time, there were thorns at the top of the seed scales of cones, and the cones were oval and 4-9 cm long. Sessile or extremely short, lasting for several years; Seed scales have thick scales, prominent transverse ridges and prickles in scales and umbilicus. Seeds ovoid, 6-8 mm long. Light brown with stripes; The wings are about 1cm long, yellow and white with brown stripes. Cotyledons 8- 12. Flowering in April-May; The fruit ripened in June 5438+the following year1October.

Morphological characteristics Pinus massoniana is an evergreen tree with a height of 40 m, and its bark is grayish brown at the lower part and red at the upper part. The old tree is divided into irregular scaly thick slices, 2 needles in a bundle, slender and soft, 12 ~ 20 cm long, with 2 vascular bundles, resin pipe 4 ~ 7, and the edge. Leaf sheaths are persistent and dioecious. Most of the male cones are clustered in the lower part of the new branches, and the female flowers are born near the top of the new branches. The cones are oval or conical with short stems. When they are mature, the seeds are oval, and the wings and seeds can be easily separated. I found some obvious pictures in March and April of flowering. . And their morphological characteristics,,, I hope it will help you. .