Agalinis tenuifolia
Agalinis neoscotica
gérardie à feuilles ténues, slender-leaf agalinis, slender-leaf false foxglove
Middleton false foxglove, Nova scotia agalinis, Nova scotia false foxglove
simple or branched, 10–100 cm;
branches ascending to spreading, quadrangular, sharply ridged to winged distally, glabrate, sometimes scabrous.
simple or branched, 5–30(–47) cm;
branches spreading-ascending, obtusely quadrangular proximally to quadrangular with wings on angles distally, glabrous or sparsely 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 linear-elliptic to elliptic, 6–40 x 0.8–5 mm, not fleshy, margins entire, abaxial midvein sparsely scabrous, adaxial surface scabrous;
axillary fascicles absent or shorter than subtending leaves.
racemes, elongate, flowers 2 per node;
bracts shorter than, or longer than, or both shorter and longer than, pedicels.
racemes, flowers 2 per node;
bracts longer than pedicels.
ascending-spreading, some upcurved distally, 6–25 mm, glabrous.
spreading-ascending, (0.8–)1.5–5.3(–6.5) 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 hemispheric-campanulate, tube 1.5–3 mm, glabrous, lobes triangular-lanceolate, 1.1–4(–5) mm, unequal, mid adaxial shortest;
corolla pale to dark pink, with 2 yellow lines and red spots in abaxial throat, or lines faint or absent, (8–)10–15 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial slightly spreading to projected, adaxial slightly spreading or projected distal to corolla mouth, 1.6–6 mm, unequal, pilose or densely so externally;
proximal and distal anthers parallel to filaments, pollen sacs 1–2 mm;
style included, (3–)4–7.5 mm.
globular, 4–7 mm.
globular, 5–6 mm.
tan to brown, 0.5–1.5 mm.
brown, 0.9–1.5 mm.
= 28.
= 28.
Agalinis tenuifolia
Agalinis neoscotica
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 neoscotica is rare in Maine, occurring only in Washington County on shores and tidal pools, and in adjacent eastern New Brunswick; it is most abundant in southwestern Nova Scotia and is reported from neighboring Grand Manan Island and Sable Island on the extreme northeastern edge of the range of Agalinis.
Features that characterize Agalinis neoscotica are narrow tubular corolla throats with red spots in two rows on the two yellow lines (the lines sometimes absent); corolla lobes that either project forward or are only slightly spreading; relatively small anthers, all held parallel to the filaments; two-lobed stigmas, obvious in live plants but rarely on dried specimens; both anthers and stigma included within the corolla throat; calyx in which the middle adaxial lobe is shortest and curved toward the corolla; bracts longer than both the pedicels and flowers they subtend and, sometimes, longer than the main stem leaves; and leaves with narrowed bases that terminate at a creaselike abscission zone. Agalinis neoscotica has a mixed mating system (H. M. Stewart et al. 1996). Self-pollination occurs in bud but delayed pollen germination allows for out-crossing. Stewart and J. M. Canne (1998) presented data that showed A. neoscotica flower development and morphology differ from those of A. purpurea.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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