Callitriche stagnalis |
Callitriche longipedunculata |
|
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callitriche des eau× stagnantes, pond water-starwort |
longstock water-starwort |
|
Stem | and leaf scales present. |
and leaf scales present. |
Leaves | connate at base, obovate-spatulate to ± round, 4–9 × 1–4 mm, 1+-veined. |
connate at base, spatulate, 2.8–5 × 1.8–3.3 mm, 1+-veined. |
Inflorescences | bracts persistent. |
bracts caducous. |
Pedicels | 0–0.2 mm in fruit. |
0–25 mm in fruit. |
Flowers | solitary; styles erect; pollen yellow. |
usually 1 staminate and 1 pistillate in 1 axil opposed by 1(+) pistillate; styles erect and spreading to recurved; pollen yellow. |
Schizocarps | 1.2–1.8 × 1–1.7 mm, ± as long as wide; mericarps pale grayish brown, not swollen, winged throughout, wings straight, 0.1–0.5 mm wide. |
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. |
2n | = 10. |
|
Callitriche stagnalis |
Callitriche longipedunculata |
|
Phenology | Flowering May–Oct. | Flowering Mar–May. |
Habitat | Standing water, stream margins, backwaters, ponds, pools, ditches. | Vernal pools. |
Elevation | 0–1500 m. (0–4900 ft.) | 0–700 m. (0–2300 ft.) |
Distribution |
AL; CA; CT; MA; MD; ME; MO; MT; NJ; NY; OR; PA; VA; WA; WI; BC; NF; QC; SPM; Europe [Introduced in North America; introduced also in Australia]
|
CA |
Discussion | 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, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16691). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 17, p. 54. | FNA vol. 17, p. 52. |
Parent taxa | Plantaginaceae > Callitriche | Plantaginaceae > Callitriche |
Sibling taxa | ||
Synonyms | C. marginata var. longipedunculata | |
Name authority | Scopoli: Fl. Carniol. ed. 2, 2: 251. (1772) | Morong: Bull. Torrey Bot. Club 18: 236. (1891) |
Web links |
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