Difference between revisions of "Arnoglossum atriplicifolium"
Phytologia 28: 294. 1974.
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|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Arnoglossum | |genus=Arnoglossum |
Latest revision as of 21:00, 5 November 2020
Plants 100–300 cm (rhizomatous). Stems smooth to weakly striate (glaucous). Basal leaves: blades usually ovate or ovate-cordate, to 21 cm (bases truncate or subcordate), margins shallowly lobed or dentate (sinuses smooth). Cauline leaves: (abaxial faces pale green, glaucous) proximal petiolate, ± deltate, margins coarsely dentate; distal petiolate or sessile, smaller. Involucres (7.5–)8–10(–10.5) mm. Phyllaries (pale green) oblong, midveins not winged (tips obtuse to acute, sparsely papillate). Corollas white, usually with green, sometimes purple, 8–9.5(–13) mm. Cypselae fusiform or ellipsoid, 4–5 mm (brown or purplish, 8–10-ribbed); pappi 5–6(–7) mm (readily falling). 2n = 50, 52, 56.
Phenology: Flowering Jul–Nov.
Habitat: Edges of woods, pastures, roadsides
Elevation: 10–600 m
Distribution
Ala., Ark., Del., Fla., Ga., Ill., Ind., Kans., Ky., Md., Mich., Minn., Miss., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Va., W.Va., Wis.
Discussion
Selected References
None.