It is an organ of perennation or vegetative propagation, and is characteristic of various water plants (e.g.Sagittaria).
这是多年生营养繁殖器官，还是多种水生植物的特征之一(例如：Sagittaria)。
Sagittaria
英语例句库
中文百科
慈姑属
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慈姑属（学名：Sagittaria）是泽泻科下的一个属，为水生草本植物。该属共有20种，分布于温带和热带地区。
- ↑ 中国种子植物科属词典. 中国数字植物标本馆.
英语百科
Sagittaria 慈姑属
Sagittaria is a genus of about 30 species of aquatic plants whose members go by a variety of common names, including arrowhead, duck potato, katniss, Omodaka (沢瀉 in Japanese), swan potato, tule potato, and wapato (or wapatoo). Most are native to South, Central, and North America, but there are also some from Europe, Africa, and Asia.
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