Flora of North America species comparison

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Callitriche trochlearis

effluent water-starwort, water starwort, wheel fruit water-starwort
Stem

and leaf scales present.
Leaves

connate at base, ± parallel-sided, 5.2–9.1 × 0.1–0.9 mm, 1+-veined.
Inflorescences

bracts persistent.
Pedicels

0–0.5 mm in fruit.
Flowers

usually 1 staminate and 1 pistillate in each axil;

styles spreading;

pollen yellow.
Schizocarps

1–1.2 × 1.1–1.3 mm, ± as long as wide;

mericarps black, not swollen, evenly winged throughout, wings straight, 0.05–0.1 mm wide.
2n

= 40.

Callitriche trochlearis
Phenology Flowering Apr–Jul.
Habitat Vernal and perennial pools, ditches.
Elevation 0–2000 m. (0–6600 ft.)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Callitriche trochlearis occurs in northwestern and central-western California plus western Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 54.
Parent taxa Plantaginaceae > Callitriche
Sibling taxa
C. brutia, C. fassettii, C. hermaphroditica, C. heterophylla, C. longipedunculata, C. marginata, C. palustris, C. pedunculosa, C. peploides, C. stagnalis, C. stenoptera, C. terrestris
Name authority Fassett: Rhodora 53: 194. (1951)
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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