IUCN threat status:

Least Concern (LC)

Comments

The character of leaves spirally arranged seems not to be true for Hippuris spiralis. In fact, in that entity the leaves are whorled but the whorls are oblique. This variation may be caused by twisted shoots, especially in running water. Terminal subshoots are a common variant in H. vulgaris. For these reasons, both H. spiralis and H. vulgaris var. ramificans are treated here as synonyms of H. vulgaris.

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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

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