Agalinis tenuifolia
Agalinis laxa
gérardie à feuilles ténues, slender-leaf agalinis, slender-leaf false foxglove
long-pedicelled false foxglove, twoline false foxglove
simple or branched, 10–100 cm;
branches ascending to spreading, quadrangular, sharply ridged to winged distally, glabrate, sometimes scabrous.
simple or branched, 20–100 cm;
branches widely and laxly ascending, terete proximally, terete or bluntly angular-ridged distally, glabrous or scabridulous.
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 filiform, (7–)10–30 x 0.3–1 mm, not fleshy, margins entire, finely scabrous or nearly glabrous, adaxial surface finely scabrous or glabrate;
axillary fascicles absent.
racemes, elongate, flowers 2 per node;
bracts shorter than, or longer than, or both shorter and longer than, pedicels.
racemose-paniculate, flowers 1 per node, some flowers pseudoterminal;
bracts much shorter than pedicels.
ascending-spreading, some upcurved distally, 6–25 mm, glabrous.
widely spreading, 15–40(–47) mm, glabrous.
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 narrowly campanulate, tube 2.5–4 mm, glabrous, lobes deltate-subulate, 0.3–1 mm;
corolla pale pink to pink, with 2 yellow lines and red spots in abaxial throat, 8–16.5 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed-spreading, 2.7–6.4(–7) mm, abaxial pilose externally, adaxial glabrous externally;
proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 1.3–2.8 mm;
style exserted, 5–12 mm.
globular, 4–7 mm.
globular-ovoid, 3.7–5 mm.
tan to brown, 0.5–1.5 mm.
black, 0.4–0.7 mm.
= 28.
= 28.
Agalinis tenuifolia
Agalinis laxa
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.)
Agalinis laxa occurs in northeastern South Carolina and is expected to occur in southeastern North Carolina; it is most common near the coast in Georgia and northeastern Florida but is found sporadically on the coastal plain as far south as Hernando County, Florida. In the field, A. laxa is most easily confused with A. tenella; both have laxly spreading branches, widely spaced leaves, long pedicels subtended by much shorter bracts, and inflorescences with some pseudoterminal flowers. Agalinis laxa is most easily differentiated from A. tenella by pedicels to 40 mm in fruit, shorter and narrower corollas, straight corolla throats, pilose abaxial corolla lobes, and black seeds. Agalinis tenella has larger gibbous corollas, glabrous abaxial corolla lobes, and golden yellow seeds.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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