Agalinis auriculata
Agalinis tenella
earleaf false foxglove
delicate false foxglove
simple or branched, (18–)30–100 cm;
branches spreading-ascending, obtusely angular, retrorsely short-sericeous and hispid.
simple or branched, 25–90 cm;
branches laxly and widely spreading, subterete proximally, quadrangular-ridged distally, glabrous or scabridulous.
spreading;
blade lanceolate, 12–60 x (2–)5–20(–25) mm, margins and midveins entire or mid to distal ones with 1 or 2 proximal lobes, hispid, adaxial surface scabrous;
axillary fascicles absent.
spreading;
blade filiform to linear-filiform, 6–25 x 0.2–1(–1.5) mm, margins entire, often siliceous, abaxial midvein sometimes scabridulous, adaxial surface finely scabrous;
axillary fascicles absent.
spikelike racemes, flowers 1 or 2 per node;
bracts longer than pedicels, margins with 1 or 2 proximal lobes.
racemes, flowers 2 per node, sometimes with branches bearing pseudoterminal flowers;
bracts shorter than pedicels.
ascending, 0.5–3 mm, hispid.
spreading, (7–)10–25(–30) mm, glabrous.
calyx campanulate, tube (2–)3–9 mm, hirsute, lobes ovate-lanceolate, (5–)7–13 mm, unequal;
corolla pink, usually without 2 yellow lines and with dark pink spots in abaxial throat, 16–30 mm, throat pilose externally, villous within across bases and sinus of adaxial lobes, lobes: abaxial projecting to spreading, adaxial erect to recurved, 4–8 mm, abaxial sparsely pilose externally, adaxial glabrous externally;
proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 1.2–3 mm;
style exserted, 15–16 mm.
calyx obconic to hemispheric, tube 2–3 mm, glabrous, lobes subulate, 0.2–0.4 mm;
corolla pink to rosy pink, with 2 yellow lines and red spots in abaxial throat, 10–17 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial erect to strongly recurved, 4–7.3 mm, glabrous externally;
proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 1.7–2.5 mm;
style exserted, 7–9 mm.
ovoid, 7–20 mm.
ovoid-globular, 3–3.7 mm.
brown, 1–2 mm.
yellow, 0.7–1 mm.
= 26.
= 26.
Agalinis auriculata
Agalinis tenella
Agalinis auriculata is rare throughout its relatively broad range and has been the focus of recent field studies. It is probably extirpated in the District of Columbia, Michigan, New Jersey, Texas, and West Virginia; it was rediscovered in Pickens County, Alabama, in 2007 and Lewis County, Kentucky in 1998. The species is considered critically imperiled in at least 11 states and imperiled in another five and is the species is most abundant in Illinois, eastern Iowa, and northern Missouri.
Agalinis auriculata is in the Center for Plant Conservation’s National Collection of Endangered Plants.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Agalinis tenella is common in the panhandle of Florida, adjacent Alabama, and east-central Georgia, and occasional in southern South Carolina. J. B. Pettengill and M. C. Neel (2011) showed A. tenella to be most closely related to the rare A. decemloba. Agalinis tenella is distinguished from A. decemloba (including A. acuta) by the laxly and widely spreading branching habit, generally much shorter calyx lobes, larger corollas, and truncate capsules of A. tenella. Agalinis tenella can also be confused with A. obtusifolia; A. tenella has well-formed racemes usually with two flowers per node, while the inflorescence of A. obtusifolia is paniculate and has short, slender branches each appearing to terminate in a pedicelled flower subtended by tiny bractlets.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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