Bull. Torrey Bot. Club 40: 432. 1913
Phenology: Flowering late Sep–mid Nov.
Habitat: Moist to dry longleaf pine savannas, edges of pine plantations, dry roadsides, chalky outcrops, seepage slopes of clay roadsides.
Elevation: 0–300 m.
Ala., Ark., La., Miss., Tenn., Tex.
Plants of Agalinis oligophylla are rare in the easternmost portions of the range; they are abundant farther west into Texas. Agalinis oligophylla is often the last species of Agalinis to begin flowering, usually in late September, sometimes not until mid October and often remains in flower well into November. Unbranched plants of A. oligophylla can be confused with A. aphylla, with which it often shares the habitat. Agalinis oligophylla can be distinguished from A. aphylla by the longer leaves, more diffusely branched inflorescence, glabrous style, and the much later flowering period of A. oligophylla. Also, on the older buds of A. oligophylla the corolla is globular, but in A. aphylla the corolla on older buds is obovoid. Corollas of A. oligophylla are asymmetric; the adaxial side of the corolla throat is conspicuously shorter than the upcurved abaxial side of the corolla. The buds, pedicels, and capsules of A. oligophylla turn dark brown or blackish, and corollas turn dark purplish or pinkish brown when dried. These dark structures contrast strikingly with the pale green to gray (or reddish) branches and leaves.
|Author||Judith M. Canne-Hilliker† + and John F. Hays +|
|Basionyms||Gerardia aphylla var. grandiflora +|
|Common name||Ridgestem false foxglove +|
|Distribution||Ala. +, Ark. +, La. +, Miss. +, Tenn. + and Tex. +|
|Elevation||0–300 m. +|
|Habitat||Moist to dry longleaf pine savannas, edges of pine plantations, dry roadsides, chalky outcrops, seepage slopes of clay roadsides. +|
|Illustration copyright||Flora of North America Association +|
|Illustrator||Linny Heagy +|
|Phenology||Flowering late Sep–mid Nov. +|
|Publication title||Bull. Torrey Bot. Club +|
|Publication year||1913 +|
|Source xml||https://firstname.lastname@example.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V17/V17 977.xml +|
|Special status||Illustrated + and Endemic +|
|Synonyms||G. microphylla +|
|Taxon family||Orobanchaceae +|
|Taxon name||Agalinis oligophylla +|
|Taxon parent||Agalinis +|
|Taxon rank||species +|
|Volume||Volume 17 +|