Arnoglossum atriplicifolium

(Linnaeus) H. Robinson

Phytologia28: 294. 1974

Synonyms: Cacalia paniculata Conophora atriplicifolia Conophora similis Mesadenia atriplicifolia Mesadenia pulverulenta Mesadenia rotundifolia Mesadenia similis Senecio atriplicifolius
Basionyms: Cacalia atriplicifolia
Found in FNA Volume 20. Treatment on page 623.
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

References

None.

AuthorLoran C. Anderson +
BasionymCacalia atriplicifolia +
Elevation10–600 m +
HabitatEdges of woods, pastures, roadsides +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering Jul–Nov. +
ReferenceNone +
SynonymCacalia paniculata +, Conophora atriplicifolia +, Conophora similis +, Mesadenia atriplicifolia +, Mesadenia pulverulenta +, Mesadenia rotundifolia +, Mesadenia similis + and Senecio atriplicifolius +
Taxon nameArnoglossum atriplicifolium +
Taxon parentArnoglossum +
Taxon rankspecies +
VolumeVolume 20 +