Flora of North America species comparison

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Hippuris montana

mountain mare's-tail
Rhizomes

1 mm diam.
Stems

15–100 mm.
Leaves

on mid portions of emergent shoots in whorls of 5–7, linear, 2–10 × 0.2–0.5 mm, midvein often conspicuous, lateral veins absent, apex acute, tip translucent, callous, not curled in dried plants.
Flowers

unisexual, staminate in leaf whorls proximal to pistillate;

filaments longer than anthers.
Drupes

1.2 × 1 mm.
2n

= 16.

Hippuris montana
Phenology Flowering summer.
Habitat Shallow streams, stream banks, bogs, seeps, upper montane and alpine zones.
Elevation 100–1400 m. (300–4600 ft.)
Distribution
from FNA
AK; WA; AB; BC; NT; YT
[WildflowerSearch map]
[BONAP county map]
Discussion

Hippuris montana differs from other species of Hippuris by its diminutive size and the tendency for the plants to be woven into the moss carpet; it is probably often overlooked by collectors.

The single occurrence reported by N. N. Tzvelev (1980) in the Russian Far East (lower Amur River) of an otherwise North American endemic has not been confirmed.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 56.
Parent taxa Plantaginaceae > Hippuris
Sibling taxa
H. lanceolata, H. tetraphylla, H. vulgaris
Name authority Ledebour e× Reichenbach: Iconogr. Bot. Pl. Crit. 1: 71, plate 86, fig. 181. (1823)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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