Difference between revisions of "Lactuca hirsuta"
Gen. N. Amer. Pl. 2: 124. 1818.
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Latest revision as of 20:12, 29 July 2020
Biennials, 15–80 (–120) cm. Leaves on proximal 1/3–2/3 of each stem; blades of undivided cauline leaves ± ovate, margins denticulate (sometimes ± ciliate), midribs usually piloso-setose. Heads in corymbiform to paniculiform arrays. Involucres 12–18+ mm. Phyllaries usually reflexed in fruit. Florets 12–24+; corollas usually yellow, sometimes drying bluish, usually deliquescent. Cypselae: bodies brown, ± flattened, elliptic, 4.5–5+ mm, beaks ± filiform, 2.5–3.5 mm, faces 1 (–3) -nerved; pappi white, 6.5–8 (–10+) mm. 2n = 34.
Phenology: Flowering Jul–Aug(–Sep).
Habitat: Openings in woods
Elevation: 10–100 m
Distribution
N.S., Ont., P.E.I., Que., Ala., Ark., Conn., D.C., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va.
Discussion
The type of Lactuca hirsuta may be conspecific with that of L. graminifolia.
Selected References
None.
Lower Taxa
"fine" is not a number.