Difference between revisions of "Lactuca canadensis"
Sp. Pl. 2: 796. 1753.
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|place=2: 796. 1753 | |place=2: 796. 1753 | ||
|year=1753 | |year=1753 | ||
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+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=F | ||
+ | |label=Illustrated | ||
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|basionyms= | |basionyms= | ||
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|name=Lactuca canadensis var. latifolia | |name=Lactuca canadensis var. latifolia | ||
|authority=Kuntze | |authority=Kuntze | ||
− | }}{{Treatment/ID/Synonym | + | |rank=variety |
+ | }} {{Treatment/ID/Synonym | ||
|name=Lactuca canadensis var. longifolia | |name=Lactuca canadensis var. longifolia | ||
|authority=(Michaux) Farwell | |authority=(Michaux) Farwell | ||
− | }}{{Treatment/ID/Synonym | + | |rank=variety |
+ | }} {{Treatment/ID/Synonym | ||
|name=Lactuca canadensis var. obovata | |name=Lactuca canadensis var. obovata | ||
|authority=Wiegand | |authority=Wiegand | ||
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+ | }} {{Treatment/ID/Synonym | ||
|name=Lactuca sagittifolia | |name=Lactuca sagittifolia | ||
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+ | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Lactuca;Lactuca canadensis | |hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Lactuca;Lactuca canadensis | ||
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name=Lactuca canadensis | name=Lactuca canadensis | ||
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|authority=Linnaeus | |authority=Linnaeus | ||
|rank=species | |rank=species | ||
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|publication title=Sp. Pl. | |publication title=Sp. Pl. | ||
|publication year=1753 | |publication year=1753 | ||
− | |special status= | + | |special status=Illustrated |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_350.xml |
|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Lactuca | |genus=Lactuca |
Latest revision as of 20:51, 5 November 2020
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
![V19-350-distribution-map.gif](/w/images/5/5a/V19-350-distribution-map.gif)
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.