Callitriche longipedunculata


Bull. Torrey Bot. Club 18: 236. 1891.

Common names: Longstock water-starwort
EndemicConservation concern
Synonyms: Callitriche marginata var. longipedunculata (Morong) Jepson
Treatment appears in FNA Volume 17. Treatment on page 52. Mentioned on page 50.

Leaves connate at base, spatulate, 2.8–5 × 1.8–3.3 mm, 1+-veined. Stem and leaf scales present. Inflorescences: bracts caducous. Pedicels 0–25 mm in fruit. Flowers usually 1 staminate and 1 pistillate in 1 axil opposed by 1(+) pistillate; styles erect and spreading to recurved; pollen yellow. Schizocarps 0.9–1.4 × 0.8–1.2 mm, as long as or longer than wide; mericarps black, not swollen, evenly winged throughout, wings straight, 0.03–0.1 mm wide.

Phenology: Flowering Mar–May.
Habitat: Vernal pools.
Elevation: 0–700 m.


Callitriche longipedunculata is known from most of California, including the Inner North Coast Ranges, Cascade Range Foothills, Great Central Valley, San Francisco Bay Area, and western Pensisular Ranges (R. V. Lansdown and R. E. Preston,

Selected References


Lower Taxa