Difference between revisions of "Lactuca ludoviciana"
W. J. Med. Phys. Sci. 8: 491. 1835.
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|name=Sonchus ludovicianus | |name=Sonchus ludovicianus | ||
|authority=Nuttall | |authority=Nuttall | ||
| + | |rank=species | ||
|publication_title=Gen. N. Amer. Pl. | |publication_title=Gen. N. Amer. Pl. | ||
|publication_place=2: 125. 1818 | |publication_place=2: 125. 1818 | ||
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|name=Lactuca campestris | |name=Lactuca campestris | ||
|authority=Greene | |authority=Greene | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Lactuca;Lactuca ludoviciana | |hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Lactuca;Lactuca ludoviciana | ||
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name=Lactuca ludoviciana | name=Lactuca ludoviciana | ||
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|authority=(Nuttall) Riddell | |authority=(Nuttall) Riddell | ||
|rank=species | |rank=species | ||
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|publication year=1835 | |publication year=1835 | ||
|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/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V19_353.xml |
|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Lactuca | |genus=Lactuca | ||
Revision as of 19:18, 16 December 2019
Biennials, 15–150 cm. Leaves on proximal 1/2–3/4 of each stem; blades of undivided cauline leaves obovate or oblanceolate to spatulate, margins denticulate (piloso-ciliate), midribs usually piloso-setose. Heads in paniculiform arrays. Involucres 12–15+ mm. Phyllaries usually reflexed in fruit. Florets 20–50+; corollas usually yellow, sometimes bluish, usually deliquescent. Cypselae: bodies brown to blackish (usually mottled), ± flattened, elliptic, 4.5–5+ mm, beaks ± filiform, 2.5–4.5 mm, faces 1(–3)-nerved; pappi white, 5–7(–11) mm. 2n = 34.
Phenology: Flowering Jun–Sep.
Habitat: Openings in woods, stream banks, prairies
Elevation: 100–1400 m
Distribution
B.C., Man., Sask., Ariz., Ark., Calif., Colo., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Minn., Mont., Nebr., N.Mex., N.Dak., Okla., Oreg., S.Dak., Tex., Utah, Wash., Wis., Wyo.
Discussion
Selected References
None.