Arnoglossum atriplicifolium

(Linnaeus) H. Robinson
Phytologia 28: 294. 1974.
Endemic
Basionym: Cacalia atriplicifolia Linnaeus Sp. Pl. 2: 835. 1753
Synonyms: Cacalia paniculata Rafinesque Conophora atriplicifolia (Linnaeus) Nieuwland Conophora similis (Small) Nieuwland Mesadenia atriplicifolia (Linnaeus) Rafinesque Mesadenia pulverulenta Rafinesque Mesadenia rotundifolia Rafinesque Mesadenia similis Small Senecio atriplicifolius (Linnaeus) Hooker
Treatment appears 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

V20-1397-distribution-map.gif

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.

Lower Taxa

None.

Loran C. Anderson +
(Linnaeus) H. Robinson +
Cacalia atriplicifolia +
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. +  and Wis. +
10–600 m +
Edges of woods, pastures, roadsides +
Flowering Jul–Nov. +
Cacalia paniculata +, Conophora atriplicifolia +, Conophora similis +, Mesadenia atriplicifolia +, Mesadenia pulverulenta +, Mesadenia rotundifolia +, Mesadenia similis +  and Senecio atriplicifolius +
Arnoglossum atriplicifolium +
Arnoglossum +
species +