annual herb

基本解释

From 1984 to 1985 the author carried the experiment on annual and biennial herb flowers soilless seedling in Northeast Forestry University flowers garden.
于1984年—1985年在东北林业大学花圃，对一二年生草花进行了无土育苗试验。
Flower size variation at the inflorescence and individual levels and its trade-off with flower number were evaluated in annual herb, Polygonum hydropiper(Polygonaceae).
探讨一年生植物水蓼花大小在花序上和个体上的变化及花大小与花数量的权衡关系。
A tropical Asian annual herb(Abutilon theophrasti) naturalized in the United States, having large, velvety, heart-shaped leaves and yellow flowers. It is an important fiber plant in northern China.
苘麻一种热带亚洲的一年生草本植物（苘麻属苘麻锦葵科），原产于美国，具有大而光滑的心形叶子和黄色花朵。它是中国北部的一种重要的纤维。
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