Agalinis tenuifolia
Agalinis fasciculata
gérardie à feuilles ténues, slender-leaf agalinis, slender-leaf false foxglove
beach false foxglove, fascicled false foxglove
simple or branched, 10–100 cm;
branches ascending to spreading, quadrangular, sharply ridged to winged distally, glabrate, sometimes scabrous.
simple or branched, (10–)50–200 cm;
branches ascending, distal portions often arching, subterete proximally to +/- quadrangular-ridged distally, moderately to copiously scabrous.
spreading, sometimes arching, ascending, or reflexed;
blade narrowly linear to linear-lanceolate, 10–70 x 0.3–6 mm, not fleshy, margins entire, adaxial surface scabrous;
axillary fascicles absent or shorter than subtending leaves.
spreading;
blade narrowly to broadly linear, 15–40(–50) x 1–3(–4) mm, margins entire, adaxial surface scabrous;
axillary fascicles shorter than or equal to subtending leaves.
racemes, elongate, flowers 2 per node;
bracts shorter than, or longer than, or both shorter and longer than, pedicels.
racemes, elongate, flowers 2 per node;
bracts longer than pedicels.
ascending-spreading, some upcurved distally, 6–25 mm, glabrous.
ascending, 2–5(–6) mm, scabrous.
calyx obconic to hemispheric, tube 2.3–5.5 mm, glabrous, lobes subulate to triangular-subulate, 0.3–2 mm;
corolla pink to rose purple, with 2 yellow lines and red spots in abaxial throat, 7–23 mm, throat pilose externally and glabrous within across bases and sinus of adaxial lobes, lobes: abaxial projected or spreading, adaxial projected over distal anthers, 2–8 mm, abaxial pilose externally, adaxial glabrous externally or pilose proximally;
proximal anthers perpendicular or oblique to filaments, distal perpendicular and vertical to filaments, pollen sacs 1–4 mm;
style exserted, 6.7–18 mm.
calyx long-campanulate, tube 3–5 mm, glabrous or scabrous, lobes triangular to triangular-subulate, 0.6–2 mm;
corolla pale to dark pink, with 2 yellow lines and dark red spots in abaxial throat, 22–36 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed-spreading, 5–12 mm, pilose externally;
proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 2.2–4.6 mm;
style strongly exserted, 14–22 mm.
globular, 4–7 mm.
globular, 4.5–6 mm.
tan to brown, 0.5–1.5 mm.
blackish, 0.7–1 mm.
= 28.
= 28.
Agalinis tenuifolia
Agalinis fasciculata
Populations of Agalinis tenuifolia in New Brunswick, Nova Scotia, and possibly Prince Edward Island in Canada are presumed introduced.
Agalinis tenuifolia is the most widespread and morphologically variable species of the genus in the flora area. Infraspecific taxa have been recognized based on differences in sizes of corollas, calyx lobes, anthers, capsules, and leaves; presence or absence of axillary fascicles; density of indument on stamens; branches ascending versus spreading; and even the stoutness of reticulations on seed coats. These characters intergrade within and among populations and occur in many other combinations in addition to those described, making these infraspecific taxa arbitrary and inconsistent with plants in the field. Pressed specimens of A. tenuifolia are often confused with A. gattingeri from which they differ by lacking a villous band of trichomes within the corolla at the bases of the adaxial corolla lobes present in A. gattingeri; projecting adaxial corolla lobes versus erect to recurved lobes in A. gattingeri; elongate racemes with two flowers per node versus one flower per node, often appearing to terminate branches in A. gattingeri; and low wings of tissue on the branch angles that are absent or less pronounced in A. gattingeri.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Although uncommon in the northern and northwestern portions of its range, Agalinis fasciculata is the most common and weedy species of the genus in the southeast, and also the largest in North America (especially in peninsular Florida around the strands), with a massive root system and stems with basal diameters to 25 mm. Plants in southern Florida flower intermittently year-round. It is one of the more variable species of the genus in the flora area in size of stems and leaves, and overall indument. See discussion under 28. A. purpurea for characters differentiating it and A. fasciculata.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Go Botany
IL Wildflowers
KS Wildflowers
LA Plants
MD Biodiversity
MI Flora
MO Plants
WildflowerSearch
iNaturalist
USDA Plants Database
