Alias: birds don't spend the night, cats sting, and holly.

Ilex, Ilex.

Origin and distribution: native to Nanjing, Jiangning, Zhenjiang, Yixing, Wuxi, Suzhou, Shanghai and other places, born in the bushes in the hillside valley; Now gardens all over the country are often cultivated; Distributed in the middle and lower reaches of the Yangtze River.

Morphological characteristics: evergreen shrubs or small trees. The bark is grayish white. The leaves are square, the teeth are hard, the leather is hard, green and bright, and the back is light green. Cymes, yellow-green, clustered in axils of 2-year-old branchlets, flowering from April to May. Drupe is spherical and bright red when it matures. The fruiting period is 10 ~ 1 1 month.

Life characteristics: resistance to humidity, like warm climate.

Growth characteristics: strong sprouting and pruning resistance. Weak positive, resistant to toxic gases, slow growth.