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wing water-starwort

Stem

and leaf scales present.

Leaves

connate at base, narrowly spatulate, 3.5–7.1(–7.2) × 0.7–1.4 mm, 1+-veined.

Inflorescences

bracts absent.

Pedicels

1.2–3.3 mm in fruit.

Flowers

usually 1 pistillate and 1 staminate in each axil, sometimes 1 or 2 axils with 2 pistillate, rarely solitary;

styles sharply deflexed;

pollen yellow.

Schizocarps

0.7–0.9 × 1.1–1.4 mm, shorter than wide;

mericarps maroon or white, not swollen, winged throughout, wings straight, 0.1–0.2 mm wide.

2n

= 20.

Callitriche marginata

Phenology Flowering Apr–Aug.
Habitat Lakes, reservoirs, floodplain pools, streams, vernal pools.
Elevation 0–1000 m. (0–3300 ft.)
Distribution
from FNA
CA; OR; BC; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

Callitriche marginata is known throughout the California floristic province northward to southeastern British Columbia. There are no records from Washington State and British Columbia; occurrences may be remnants of a previously more widespread population (M. Miller 2001).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 17, p. 52.
Parent taxa Plantaginaceae > Callitriche
Sibling taxa
C. brutia, C. fassettii, C. hermaphroditica, C. heterophylla, C. longipedunculata, C. palustris, C. pedunculosa, C. peploides, C. stagnalis, C. stenoptera, C. terrestris, C. trochlearis
Synonyms C. sepulta
Name authority Torrey: in War Department [U.S.], Pacif. Railr. Rep. 4(5): 135. (1857)
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