Sabatia campanulata
Sabatia arenicola
campanulate sabatia, savannah sabatia, slender rose-gentian
coast rose-gentian, sand rose-gentian
1–many, clustered, terete or distally 4-ridged but not angled or winged, 1.5–6(–9) dm, branching all or mostly alternate.
generally single, 4-angled with wings to 0.3 mm wide, 0.3–2(–3.2) dm, branching alternate or proximally occasionally opposite.
all cauline at flowering time;
blade narrowly lanceolate or oblong (proximal) to linear (all or distal), 1–4 cm × 1–7(–12) mm.
all cauline at flowering time;
blade elliptic to ovate or proximal occasionally obovate, 0.6–2(–2.7) cm × 2–9(–13) mm.
open, few-flowered cymes or solitary flowers at ends of branches;
pedicels (20–)40–70(–90) mm.
open cymes;
pedicels 2–40(–70) mm.
5-merous;
calyx tube turbinate to shallowly campanulate, 1–3 mm, mid- and commissural veins about equally prominent, not or low-ridged, lobes setaceous to narrowly linear;
corolla pink or rarely white, eye yellow, projections of eye into corolla lobes oblong, usually with a red border, tube 2–6 mm, lobes oblanceolate, 6–24 × 3–9(–11) mm, apex obtuse;
anthers coiling circinately.
5-merous;
calyx tube campanulate, 3.5–8.5 mm, commissural veins more prominent than midveins, ridged, lobes oblong-lanceolate to narrowly ovate-triangular, 3–20 mm;
corolla white to pink, eye white to pale yellow, projections of eye into corolla lobes oblong, without a contrasting border, tube 2–5 mm, lobes spatulate-obovate, 4–10(–13) × 2–8(–11) mm, apex obtuse to subacute;
anthers remaining straight or slightly coiling circinately.
= 34.
= 28.
Sabatia campanulata
Sabatia arenicola
Sabatia campanulata formerly occurred in Indiana and Pennsylvania, but there are no recent records from those states.
The differences upon which varieties of Sabatia campanulata have been based appear largely to be phenotypic responses to seasonal phenomena and conditions of the habitat. They exhibit less correlation with geographic distribution than some authors have indicated (R. L. Wilbur 1955).
There is a record of a hybrid of Sabatia campanulata with S. kennedyana.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Plants of Sabatia arenicola are densely leafy throughout. The vegetative parts are more succulent than those of the other species of Sabatia and darken upon drying (a useful character in identifying herbarium specimens). The mid-stem leaves of S. arenicola are mostly elliptic, widest near the middle, whereas those of S. campestris and S. formosa, to which it is most closely related, are mostly lanceolate to ovate, widest near the base.
Although Sabatia arenicola appears to be largely autogamous, it is now quite well isolated temporally from S. formosa. Molecular evidence indicates introgression of genetic material from S. formosa into part of the range of this species (N. B. Bell and L. J. Lester 1978).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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