Gratiola quartermaniae

D. Estes

J. Bot. Res. Inst. Texas 1: 163, figs. 3C,F, 8. 2007.

Common names: Limestone or Quarterman's hedge-hyssop
Endemic
Treatment appears in FNA Volume 17. Treatment on page 268. Mentioned on page 265.

Annuals. Stems erect, simple or few-branched, (7–)10–21(–30) cm, glabrous or glabrate proximally, sparsely glandular-puberulent distally. Leaves: blade linear to linear-lanceolate or lanceolate-elliptic, often falcate, (16–)18–30(–43) × (1–)2.5–5 mm, margins entire or with 1 or 2(or 3) pairs of blunt teeth distally, apex obtuse to acute, surfaces glabrous or glabrate. Pedicels slender, 7–14(–22) mm, length 0.5–1(–1.6) times bract, sparsely glandular-puberulent; bracteoles 2, 2–4.5 mm. Flowers: sepals distinct, lanceolate, 2.7–5 mm; corolla 7–9 mm, tube and limb white tinged with pink or purple, veins white to greenish white or lavender; style 3–4.6 mm. Capsules ovoid, 3.4–5.1 × 3–4.5 mm. Seeds 0.4–0.7 mm.


Phenology: Flowering Apr–Jun.
Habitat: Seeps, pools, and streams in limestone and dolomite glades, alvars, calcareous grasslands.
Elevation: 50–300 m.

Distribution

Ont., Ala., Ill., Ky., Tenn., Tex.

Discussion

Populations of Gratiola quartermaniae are concentrated in northern Alabama and central Tennessee. Disjunct populations are known from the Edwards Plateau of Texas, Will County, Illinois, and southeastern Ontario. D. Estes and R. L. Small (2007) discussed the distribution and ecology of G. quartermaniae.

Selected References

None.

Lower Taxa

None.
... more about "Gratiola quartermaniae"
Craig C. Freeman +
D. Estes +
Limestone or Quarterman's hedge-hyssop +
Ont. +, Ala. +, Ill. +, Ky. +, Tenn. +  and Tex. +
50–300 m. +
Seeps, pools, and streams in limestone and dolomite glades, alvars, calcareous grasslands. +
Flowering Apr–Jun. +
J. Bot. Res. Inst. Texas +
Amphianthus +
Gratiola quartermaniae +
Gratiola +
species +