Medicinal flowers: Populus tomentosa

I. Source

Populaceae [BuxussinicaCheng (B.micrphyllaSeb.etZucc.var.HehdetWils.)] Alias Douban yellow poplar, oolong wood, Childe boxwood, mountain yellow poplar. Populus tomentosa is native to Japan and is cultivated in all provinces in central China. Su Ling called boxwood and Golden Finch, Yingchun and velvet needle cypress as the "four masters" of bonsai trees. Ouyang said that yellow poplar was "not a pine, but a pavilion is like a cypress", and had a good evaluation of its green.

II. Plant characteristics

Shrubs, tree height ca. 100cm. Branches dense, stem branches quadrangular, leaves small opposite, oblong to long Obovate, apex rounded or concave, base cuneate, widest above middle of leaves. The flower clusters are mostly terminal and some are axillary. It blossoms in late March. Flowers unisexual, apetalous. There are 4 male flowers. Stamens long dry sepals, with a degenerated stamen as long as sepals. The fruit is a capsule.

III. Ecological characteristics

Sexual delight, more shade-resistant, cold-resistant. Half moisture is required for moisture, but not strict for fertilizer. To the south of the Yellow River, new shoots that can be cultivated in the open field to survive the winter, but which are not fully lignified, sometimes freeze to death. It grows very slowly. The plant is short, generally no more than 200cm. If the growth conditions are better, the growers in the open field can grow higher 300cm, and the yellow poplar flowering without obvious petals. Boxwood is resistant to pruning, it is not easy to walk after molding, and the tree is enduring for a long time. At present, except for the northeast, there are open field cultivation all over the country. Populus tomentosa grows well and has strong sprouting ability under semi-shade conditions. usually, a growing branch can germinate 2-9 new shoots, with an average of 3-7 shoots, and the average growth per branch can reach about 6.5cm.