Flora of North America species comparison

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Callitriche fassettii

autumnal water-starwort, Fassett's water-starwort
Stem

and leaf scales absent.
Leaves

not connate at base, ± linear, tapering from base, 12 × 0.3–0.5 mm, 1-veined.
Inflorescences

bracts absent.
Pedicels

0.5–1 mm in fruit.
Flowers

solitary or 1+ per axil;

styles recurved, ± reflexed;

pollen colorless.
Schizocarps

1.1–1.8 × 1.5–2.5 mm, shorter than wide;

mericarps black, not swollen, winged throughout, wings straight, 0.1–0.3 mm wide.

Callitriche fassettii
Phenology Flowering Apr–May(–Jul).
Habitat Vernal and permanent pools, running water.
Elevation 0–1600 m. (0–5200 ft.)
Distribution
from FNA
CA; NE; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Callitriche fassettii is widespread in California and adjacent Oregon. The record from Nebraska is based on a single specimen, which could be due to introduction, or could involve an identification or recording error and requires confirmation.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 51.
Parent taxa Plantaginaceae > Callitriche
Sibling taxa
C. brutia, C. hermaphroditica, C. heterophylla, C. longipedunculata, C. marginata, C. palustris, C. pedunculosa, C. peploides, C. stagnalis, C. stenoptera, C. terrestris, C. trochlearis
Synonyms C. autumnalis var. bicarpellaris, C. hermaphroditica var. bicarpellaris
Name authority Schotsman: Acta Bot. Neerl. 15: 477, figs. 1, 2. (1966)
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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