Aureolaria flava

(Linnaeus) Farwell

Rep. (Annual) Michigan Acad. Sci. 20: 188. 1919

Common names: Smooth yellow false foxglove
Basionyms: Gerardia flava Linnaeus Sp. Pl. 2: 610. 1753
Synonyms: Aureolaria calycosa (Mackenzie & Bush) Pennell A. flava var. macrantha Pennell A. flava var. reticulata (Rafinesque) Pennell G. calycosa (Mackenzie & Bush) Fernald G. flava var. macrantha (Pennell) Fernald G. flava var. reticulata (Rafinesque) Cory
Treatment appears in FNA Volume 17. Treatment on page 558. Mentioned on page 556, 559.
Perennials. Stems branched, 4–22 dm, glabrous, glaucescent. Leaves: petiole 7–25 mm; blade lanceolate, 60–160 x 12–60 mm, margins pinnatifid or basal leaves 2-pinnatifid, rarely entire, surfaces glabrous. Bracts leaflike, 10–48 x 2–5 mm, margins entire or pinnatifid. Pedicels 7–12 mm, glabrous. Flowers: calyx glabrous, tube campanulate, 4–8 mm, lobes linear to narrowly deltate, 4–7 x 1–2 mm, margins entire; corolla tube 25–38 mm, glabrous, lobes 5–9 x 6–15 mm; filaments 12–26 mm, glabrous; style 27–31 mm. Capsules ovoid to pyriform, 11–13 x 9–11 mm, glabrous. 2n = 24.

Phenology: Flowering Jul–Oct.
Habitat: Oak or oak-pine woods, roadsides.
Elevation: 0–1500 m.


Ont., Ala., Ark., Conn., Del., Fla., 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.


Despite the nuanced variation within this broadly distributed species recognized at both the varietal and subspecific ranks by F. W. Pennell (1935), R. P. Wunderlin (1998) recognized a broad Aureolaria flava with no varietal designations; that concept is followed here.



Lower Taxa

No lower taxa listed.