Callitriche fassettii


Acta Bot. Neerl. 15: 477, figs. 1, 2. 1966.

Common names: Fassett’s water-starwort
EndemicConservation concern
Synonyms: Callitriche autumnalis var. bicarpellaris Fenley e× Jepson C. hermaphroditica var. bicarpellaris (Fenley e× Jepson) H. Mason
Treatment appears in FNA Volume 17. Treatment on page 51. Mentioned on page 49, 50, 54.

Leaves not connate at base, ± linear, tapering from base, 12 × 0.3–0.5 mm, 1-veined. Stem and leaf scales absent. 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.

Phenology: Flowering Apr–May(–Jul).
Habitat: Vernal and permanent pools, running water.
Elevation: 0–1600 m.


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.

Selected References


Lower Taxa

... more about "Callitriche fassettii"
Richard V. Lansdown +
Schotsman +
Fassett’s water-starwort +
Calif. +, Nebr. +  and Oreg. +
0–1600 m. +
Vernal and permanent pools, running water. +
Flowering Apr–May(–Jul). +
Acta Bot. Neerl. +
Endemic +  and Conservation concern +
Callitriche autumnalis var. bicarpellaris +  and C. hermaphroditica var. bicarpellaris +
Callitriche fassettii +
Callitriche +
species +