Taxus chinensis , evergreen tree, bark grayish, longitudinally slitted; thinly blunt or slightly pointed tip of bud scale, shed or partially present at base of branchlet. Leaves 2 columns, nearly sickle-shaped, 1.5-4.5 cm long, no nipple keratinous protrusions on the midrib along the back, or sometimes sporadic, or with 1 to several papillary horny processes on both sides of the midrib adjacent to the stomatal band The color is different from that of the blowhole, light green, and the bandwidth is obvious. Seeds obovate or long-ovate, 7-8 mm long, usually broadly above, born from a red fleshy cup aril.

Morphological characteristics

Evergreen trees. Leaves spirally arranged, arranged in two rows, bar-shaped, slightly curved or subtendulate, 1-3 cm long, 2.5-3.5 mm wide (starting or seedlings can grow up to 4 cm, width up to 5 mm), apex acuminate, superior midvein bulge, midrib with evenly arranged nipples, or no nipples at all, below are two yellowish-green stomatal bands, margins often reflexed, and green margins wide.

Dioecious, single-leaved flower globules; female ovule unicot in the upper part of the axis of the axis of the top of the short axis, the base of the disc bearing aril. Seeds obovate, slightly flat, apex with two longitudinal ridges, born in red fleshy cup aril.

The yew is an evergreen tree, about 20 meters in diameter and 60 to 100 mm in diameter. Branchlets alternate, leaves spiraling, arranged in two rows, bar-shaped, slightly curved, 1 to 4.5 cm long, 2 to 5 mm wide. Fruit spherical nuts, aril coat, seed oval. Dioecious, cross-pollination. Flowering from March to June, fruiting period from September to November. Scattered in the mountains and forests and mountain springs with altitudes of 500 to 3,500 meters, the cliffs are plunged into a cool and cool climate. The average annual temperature is 11.2°C and the annual precipitation is about 487.9 mm.

Distribution of origin

Produced in the south of the Yangtze River basin in China, it is often found in mountain forests below 1000-1200m above sea level. It is distributed in scattered areas. Guiyang City is mainly distributed in Huaxi, Wudang, Kaiyang and Xifeng. Anhui Province is mainly located in Shimen Township and Huangshan District of Huangshan City. Zhejiang Baishanzu National Protection Area is also widely distributed, among which San Duan Village and Jingning Village of Qingyuan Scenic Spot are the most.

Habits

Shade-resistant tree species, hi wet and humid environment. Hi warm and humid climate. It naturally grows in acidic soils with rich humus in valleys, streams, and gentle slopes. Neutral and calcareous soils can also grow. It is resistant to drought, and it is not resistant to low water. Few pests and diseases, slow growth, long life.

Taxus chinensis var. Mairei is one of the unique components in the subtropical to warm temperate zone of China, and it is often distributed in broad-leaved forests. Hi was born in the foot of the foot of the more humid place. Strong adaptability to climate, average annual temperature 11-16 °C, minimum extremum up to -11 °C, strong resistance to dampness, requiring high fertility yellow soil, yellow brown soil (acidic, slightly acidic soil), more energy Resistant to water and moisture, Taxus chinensis var. chinensis has strong germination ability, and budding branchlets are more common on the trunk, but growth is slower.

species

There are 11 species of yew in the temperate to tropical regions of the Northern Hemisphere. There are 4 species and 1 varieties in China: Taxus chinensis, Taxus cuspidata, Taxus yunnanensis, Taxus chinensis var. , South China and Southwest China. Sichuan is mainly distributed in Maoxian, Heishui, Malcolm, Wenchuan, Luding, Kangding, Xichang, Huili and Miyi.

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