Sabatia brevifolia
Sabatia difformis
Elliott's or narrow-leaf or short-leaf sabatia, shortleaf rose gentian
lance-leaf sabatia, lanceleaf rose gentian, white sabatia
single, terete, 1.5–7 dm, branching all or mostly alternate.
1–several, clustered, proximally terete, distally sometimes ± 4-angled but not winged, 2.5–10.5 dm, branching opposite throughout.
all cauline or basal occasionally persistent at flowering time;
blade linear to oblong-lanceolate, 0.5–3 cm × 1–5(–7) mm.
all cauline at flowering time;
blade linear-lanceolate to narrowly or occasionally widely elliptic-ovate, 1–4(–6) cm × 3–14(–22) mm.
open cymes or solitary flowers at ends of branches;
pedicels (10–)20–40(–50) mm.
corymboid dichasia of compact cymules;
pedicels 1–8(–15) mm.
5-merous;
calyx tube obconic, 1–3 mm, mid- and commissural veins about equally prominent, not or low-ridged, lobes filiform, 3–8 mm;
corolla white, eye greenish yellow, projections of eye into corolla lobes without a contrasting border, tube 1–3 mm, lobes oblanceolate, 6–18 × 2–7 mm, apex obtuse to acute;
anthers coiling circinately.
5(or 6)-merous;
calyx tube shallowly campanulate, 1–2(–3) mm, midveins somewhat more prominent than commissural veins, low-ridged, commissural veins scarcely ridged, lobes narrowly lanceolate to filiform, (2–)4–9(–14) mm;
corolla white throughout (sometimes drying cream to yellow), tube 2.5–6 mm, lobes oblanceolate, (5–)7–21 × 2.5–8 mm, apex rounded;
anthers recurving.
= 32.
= 36.
Sabatia brevifolia
Sabatia difformis
Reports of Sabatia brevifolia from Louisiana were based on a specimen of questionable provenance and are considered probably erroneous by students of that state’s flora.
In some older literature, the name Sabatia difformis was misapplied to S. brevifolia.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
A historical record of Sabatia difformis from Maryland is documented, but no recent collections or reports are known from that state. Old reports of S. lanceolata from New York and Tennessee, for which no documentation was found in studies for this flora, are believed to be erroneous, probably based on misidentifications or misapplications of the name.
The name Sabatia paniculata (Michaux) Pursh is typified by a specimen of S. difformis but has often been misapplied to S. quadrangula (R. L. Wilbur 1955).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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