Sabatia quadrangula |
Sabatia decandra |
|
---|---|---|
branching sabatia, four-angle sabatia, fourangle rose gentian |
Bartram's marsh-pink or rose-gentian |
|
Habit | Herbs biennial. | Herbs perennial, not stoloniferous. |
Stems | usually single, occasionally 2–several, 4-angled with wings 0.1–0.5 mm wide, 1.5–5(–7.5) dm, branching all opposite or secondary and/or tertiary occasionally alternate. |
single, terete, 2.5–8(–10) dm, branching all or mostly alternate. |
Leaves | basal and cauline or only cauline present at flowering time; basal blades spatulate-obovate; cauline blades linear-oblong to ovate-lanceolate, 0.8–2.5(–6) cm × 3–8(–18) mm. |
basal and cauline usually present at flowering time; basal blades oblanceolate to spatulate, 4–10 cm × 9–25 mm; cauline blades abruptly differentiated, linear to lanceolate, 1.5–5(–6.5) cm × 1–8(–15) mm. |
Inflorescences | cymes of compact cymules; pedicels 1–2(–4) mm. |
flowers solitary or paired at ends of branches; pedicels (30–)80–120 mm. |
Flowers | 5-merous; calyx tube widely obconic to campanulate, 1.5–3(–3.5) mm, mid- and commissural veins about equally prominent, low-ridged, lobes linear-subulate or rarely wider, 2–8(–11) mm; corolla white throughout (sometimes drying yellow or salmon) or occasionally with a yellow eye, projections of eye into corolla lobes, when present, triangular, without a contrasting border, tube 2.5–7 mm, lobes oblanceolate to narrowly spatulate-obovate, 4.5–15 × 1.5–6 mm, apex rounded to obtuse; anthers coiling circinately. |
8–12(–14)-merous; calyx tube shallowly campanulate, (2–)3–4(–8) mm, mid- and commissural veins about equally prominent, not ridged; lobes narrowly linear to subulate, 4–20 mm; corolla pink or rarely white, eye yellow, projections of eye into corolla lobes oblong, usually with a red border, tube 5–9 mm, lobes narrowly spatulate-obovate, 16–35 × 5–12 mm, apex rounded to obtuse; anthers coiling circinately. |
2n | = 32, 34. |
= 36. |
Sabatia quadrangula |
Sabatia decandra |
|
Phenology | Flowering late spring–summer. | Flowering summer–early fall. |
Habitat | Fields, open pine woods, granite outcrops. | Wet pine savannas, cypress woods, pond margins, ditches, sometimes in shallow water. |
Elevation | 0–300 m. (0–1000 ft.) | 0–100 m. (0–300 ft.) |
Distribution |
AL; FL; GA; NC; SC; VA
|
AL; FL; GA; MS; SC
|
Discussion | The name Sabatia paniculata (Michaux) Pursh was misapplied to this species for many years but is typified by a specimen of S. difformis (R. L. Wilbur 1955). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
As well as differing as indicated in the descriptions, Sabatia decandra differs from sympatric related species in its thickened calyx lobes, which are semicircular in cross section rather than thin and flat, and in having cauline leaves usually no wider than the diameter of the stem. Sabatia decandra has generally been called S. bartramii in recent years. No specimen associated with the original description of Chironia decandra by Walter is known to exist, and R. L. Wilbur (1955) concluded that Walter’s description of C. decandra did not suffice to indicate unequivocally to which species he had applied the name. D. B. Ward (2007) neotypified the name C. decandra with a specimen of the species to which the name S. decandra is applied here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 14. | FNA vol. 14. |
Parent taxa | Gentianaceae > Sabatia | Gentianaceae > Sabatia |
Sibling taxa | ||
Synonyms | Chironia decandra, S. bartramii, S. dodecandra var. coriacea | |
Name authority | Wilbur: Rhodora 57: 22. (1955) | (Walter) R. M. Harper: Bull. Torrey Bot. Club 27: 432. (1900) |
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