Difference between revisions of "Lactuca saligna"
Sp. Pl. 2: 796. 1753.
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|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Lactuca | |genus=Lactuca | ||
Revision as of 15:11, 18 September 2019
Annuals (perhaps persisting), 15–70(–100+) cm. Leaves on proximal 1/2–3/4+ of each stem; blades of undivided cauline leaves ± linear to filiform, margins entire or denticulate, midribs usually prickly-setose. Heads in racemiform to spiciform arrays. Involucres 6–9(–13+) mm. Phyllaries usually erect in fruit. Florets 6–12(–20+); corollas yellow (sometimes abaxially bluish), usually deliquescent. Cypselae: bodies pale brown, ± flattened, elliptic to oblanceolate, 2.5–3.5 mm, beaks ± filiform, (2–)5–6 mm, faces 5–7-nerved; pappi white, 5–6 mm. 2n = 18.
Phenology: Flowering Aug–Oct.
Habitat: Disturbed sites
Elevation: 10–1500 m
Distribution
Ont., Que., Ala., Ariz., Ark., Calif., Del., D.C., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Mo., Nebr., Nev., N.J., N.Mex., N.Y., N.C., Ohio, Okla., Oreg., Pa., S.C., Tenn., Tex., Va., Wash., W.Va., Wis., Europe, introduced also in Mexico.
Discussion
Selected References
None.