Difference between revisions of "Lactuca canadensis"
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|name=Lactuca canadensis var. latifolia | |name=Lactuca canadensis var. latifolia | ||
|authority=Kuntze | |authority=Kuntze | ||
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|name=Lactuca canadensis var. longifolia | |name=Lactuca canadensis var. longifolia | ||
|authority=(Michaux) Farwell | |authority=(Michaux) Farwell | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Lactuca canadensis var. obovata | |name=Lactuca canadensis var. obovata | ||
|authority=Wiegand | |authority=Wiegand | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Lactuca sagittifolia | |name=Lactuca sagittifolia | ||
|authority=unknown | |authority=unknown | ||
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|publication year=1753 | |publication year=1753 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V19_350.xml |
|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Lactuca | |genus=Lactuca | ||
Revision as of 15:11, 18 September 2019
Biennials, (15–)40–200(–450+) cm. Leaves on proximal 1/2–3/4 of each stem; blades of undivided cauline leaves oblong, obovate, or lanceolate to spatulate or lance-linear, margins entire or denticulate, midribs sometimes sparsely pilose. Heads in ± corymbiform to paniculiform arrays. Involucres 10–12+ mm. Phyllaries usually reflexed in fruit. Florets 15–20+; corollas bluish or yellowish, usually deliquescent. Cypselae: bodies brown (often mottled), ± flattened, elliptic, 5–6 mm, beaks ± filiform, 1–3 mm, faces 1(–3)-nerved; pappi white, 5–6 mm. 2n = 34.
Phenology: Flowering Jun–Oct.
Habitat: Roadsides, swamps, salt marshes, thickets
Elevation: 0–2200 m
Distribution
B.C., Man., N.B., N.S., Ont., P.E.I., Que., Yukon, Ala., Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Mexico, Central America, Eurasia.
Discussion
Selected References
None.