Difference between revisions of "Lactuca ludoviciana"
W. J. Med. Phys. Sci. 8: 491. 1835.
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|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Lactuca | |genus=Lactuca | ||
Latest revision as of 19:51, 5 November 2020
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.