Bull. Torrey Bot. Club 40: 434. 1913
Phenology: Flowering Aug–mid Oct.
Habitat: Sand plain grasslands, dry prairie remnants, dry roadsides, cemeteries, margins and openings in mesic to dry mixed woodlands, serpentine grasslands.
Elevation: 0–700 m.
Ala., Conn., D.C., Ky., Md., Mass., N.Y., N.C., Pa., R.I., S.C., Tenn., Va.
J. B. Pettengill and M. C. Neel (2011) provided morphological and molecular evidence that showed Agalinis decemloba and A. acuta are conspecific. Their data also indicated that A. tenella is most closely related to A. decemloba (including A. acuta) and may merit infraspecific status within A. decemloba. The authors maintain A. tenella based on morphological characters that include: larger corollas with proportionally larger recurved lobes; larger anthers; longer styles and stigma; and larger plants with many laxly spreading branches than A. decemloba. Agalinis decemloba is rare, and populations show extreme variation in numbers of plants produced per year. The authors agree with Pettengill and Neel that A. decemloba, as circumscribed here to include the federally listed endangered A. acuta, is threatened and deserves protection. Study of a population of A. decemloba (as A. acuta) in Massachusetts showed these plants were self-compatible (Neel 2002). Agalinis decemloba is distinguished from A. obtusifolia by the following characteristics: stems and branches flexible and drying green versus stiff and drying stramineous, leaves linear to linear-filiform versus linear-elliptic to spatulate, bracts shorter than to slightly longer than pedicels versus much shorter than pedicels, calyx lobes subulate to triangular versus deltate, and corollas usually with two yellow lines and red spots in abaxial throat versus two yellow lines and pink spots absent or pale in abaxial throat.
Agalinis decemloba is in the Center for Plant Conservation’s National Collection of Endangered Plants.
|Author||Judith M. Canne-Hilliker† + and John F. Hays +|
|Authority||(Greene) Pennell +|
|Basionyms||Gerardia decemloba +|
|Common name||Ten-lobed false foxglove +|
|Distribution||Ala. +, Conn. +, D.C. +, Ky. +, Md. +, Mass. +, N.Y. +, N.C. +, Pa. +, R.I. +, S.C. +, Tenn. + and Va. +|
|Elevation||0–700 m. +|
|Habitat||Sand plain grasslands, dry prairie remnants, dry roadsides, cemeteries, margins and openings in mesic to dry mixed woodlands, serpentine grasslands. +|
|Illustration copyright||Flora of North America Association +|
|Illustrator||Linny Heagy +|
|Phenology||Flowering Aug–mid Oct. +|
|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 956.xml +|
|Special status||Endemic + and Conservation concern +|
|Synonyms||Agalinis acuta + and G. acuta +|
|Taxon family||Orobanchaceae +|
|Taxon name||Agalinis decemloba +|
|Taxon parent||Agalinis +|
|Taxon rank||species +|
|Volume||Volume 17 +|