Callitriche stagnalis

Scopoli

Fl. Carniol. ed. 2, 2: 251. 1772.

Common names: Pond water-starwort callitriche des eau× stagnantes
WeedyIntroduced
Treatment appears in FNA Volume 17. Treatment on page 54. Mentioned on page 50.

Leaves connate at base, obovate-spatulate to ± round, 4–9 × 1–4 mm, 1+-veined. Stem and leaf scales present. Inflorescences: bracts persistent. Pedicels 0–0.2 mm in fruit. Flowers solitary; styles erect; 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. 2n = 10.


Phenology: Flowering May–Oct.
Habitat: Standing water, stream margins, backwaters, ponds, pools, ditches.
Elevation: 0–1500 m.

Distribution

Introduced; St. Pierre and Miquelon, B.C., Nfld. and Labr. (Nfld.), Que., Ala., Calif., Conn., Maine, Md., Mass., Mo., Mont., N.J., N.Y., Oreg., Pa., Va., Wash., Wis., Europe, also in Australia

Discussion

Lower Taxa

None.
... more about "Callitriche stagnalis"
Richard V. Lansdown +
Scopoli +
alternate +, opposite +, whorled +, helical +  and subopposite +
not leathery +  and not fleshy +
persistent +
Pond water-starwort +  and callitriche des eau× stagnantes +
ligulate +, unilabiate +, regular +, personate +  and bilabiate +
ovoid +, globular +, ellipsoid +, urceolate +, tubular +, cylindric +, less rotate +  and salverform +
St. Pierre and Miquelon +, B.C. +, Nfld. and Labr. (Nfld.) +, Que. +, Ala. +, Calif. +, Conn. +, Maine +, Md. +, Mass. +, Mo. +, Mont. +, N.J. +, N.Y. +, Oreg. +, Pa. +, Va. +, Wash. +, Wis. +, Europe +  and also in Australia +
drupe-like +
0–1500 m. +
curved +  and straight +
staminate +  and pistillate +
1 +  and 4 +
poricidal +, septicidal +, loculicidal +  and dehiscence +
Standing water, stream margins, backwaters, ponds, pools, ditches. +
decussate +  and opposite +
persistent +  and deciduous +
connate +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
obovate-spatulate +  and more or less round +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
brown +  and pale grayish +
not swollen +
axile +  and parietal +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
5 +  and 4 +
Flowering May–Oct. +
Fl. Carniol. ed. +
philbrick1998a +
minute +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
red +, maroon +, black +, gray +, yellow +, brown +, tan +  and white +
ovoid +  and ellipsoid cylindric globular oblong conic disciform patelliform or angled +
distinct +  and connate +
5 +  and 4 +
Weedy +  and Introduced +
adnate +  and free +
climbing +  and scrambling +
supported by water , glabrous or bearing scales +  and creeping +
reclining;pendent;spreading;arching;erect;ascending;erect;ascending;decumbent +
Callitriche stagnalis +
Callitriche +
species +
terrestrial +  and amphibious +
straight +
0.1mm;0.5mm +