Page author: David Giblin
Hippuris montana
mountain mare's-tail
Fruits, in a whorl around stem and subtended by a whorl of leaves.

Distribution: Chiefly west of the Cascades in Washington; Alaska to Washington, east to Northwest Territories and Alberta.

Habitat: Wet meadows, streams and mossy banks in the moungtains

Flowers: July-September

Origin: Native

Conservation Status: Not of concern


Perennial herb with unbranched stems to 10 cm tall; from slender creeping rhizomes.


Simple, linear, to 1 cm long, in whorls of 5-8 along stem.


Tiny and inconspicuous, in worls at bases of leaves; mostly imperfect, lacking petals, and with 1 stamen.


Small reddish-green nutlike fruits in whorls at leaf bases.

Identification Notes:

Look for the delicate plants with narrow whorled leaves and minute flowers. H. vulgaris is a more robust plant with stems more than 1 mm thick and leaves mostly over 1 cm long.

Accepted Name:
Hippuris montana Ledeb. ex Rchb.
Publication: Iconographia Botanica seu Plantae Criticae 1: 71, pl. 86, f. 181. 1823.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Hippuris montana in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Hippuris montana checklist entry.

E-Flora BC: Hippuris montana atlas page.

CalPhotos: Hippuris montana photos.

USDA Plants: Hippuris montana information.

9 photographs:
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