Difference between revisions of "Callitriche palustris"
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|name=Callitriche palustris var. stenocarpa | |name=Callitriche palustris var. stenocarpa | ||
|authority=(Hegelmaier) Jepson | |authority=(Hegelmaier) Jepson | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. palustris var. verna | |name=C. palustris var. verna | ||
|authority=(Linnaeus) Fenley e× Jepson | |authority=(Linnaeus) Fenley e× Jepson | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. stenocarpa | |name=C. stenocarpa | ||
|authority=Hegelmaier | |authority=Hegelmaier | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. verna | |name=C. verna | ||
|authority=Linnaeus | |authority=Linnaeus | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Plantaginaceae;Callitriche;Callitriche palustris | |hierarchy=Plantaginaceae;Callitriche;Callitriche palustris | ||
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name=Callitriche palustris | name=Callitriche palustris | ||
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|authority=Linnaeus | |authority=Linnaeus | ||
|rank=species | |rank=species | ||
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|publication year=1753 | |publication year=1753 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V17/V17_158.xml |
|genus=Callitriche | |genus=Callitriche | ||
|species=Callitriche palustris | |species=Callitriche palustris | ||
Latest revision as of 19:30, 5 November 2020
Leaves connate at base, ± linear, tapering strongly from near base or spatulate, 2.5–9 × 0.3–5 mm, 1+-veined. Stem and leaf scales present. Inflorescences: bracts caducous, sometimes persistent. Pedicels 0–0.2 mm in fruit. Flowers usually 1 staminate and 1 pistillate in 1 axil opposed by 1 pistillate; styles erect or spreading; pollen yellow. Schizocarps obovoid, usually widest distal to middle, 0.8–1.4 × 0.6–1.4 mm, longer than wide, sometimes as long as wide; mericarps black, not swollen, not winged, winged only at apex, or winged throughout but widest at apex, wings straight, 0.03–0.1 mm wide. 2n = 20.
Phenology: Flowering May–Oct.
Habitat: Fast-flowing rivers and streams, backwaters, ditches, swamps, Sphagnum bogs, lakes, ponds, springs, seepages.
Elevation: 0–3600 m.
Distribution
Greenland, St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Conn., Del., Idaho, Ill., Iowa, Maine, Mass., Mich., Minn., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Oreg., Pa., R.I., S.Dak., Tex., Utah, Vt., Wash., Wis., Wyo., Mexico (Chihuahua, San Luis Potosí), Eurasia, introduced in Australia.
Discussion
Callitriche palustris has been included on the Composite List of Weeds maintained by the Weed Science Society of America (http://wssa.net/wssa/weed/composite-list-of-weeds/); its inclusion seems unwarranted.
Selected References
None.