Flora of North America species comparison

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Gratiola graniticola

granite hedge-hyssop
Habit Annuals.
Stems

erect, simple, sometimes few-branched, (7–)9–21(–29) cm, glabrous or glabrate proximally, glandular-puberulent distally.
Leaves

blade lanceolate-ovate to oblong, not falcate, 6–13(–18) × 1–3(–5) mm, margins entire or with 1 or 2(or 3) pairs of blunt teeth distally, apex obtuse, surfaces glabrate or glandular-puberulent.
Pedicels

slender, (5–)8–17(–22) mm, length 0.9–2(–2.3) times bract, sparsely to densely glandular-puberulent;

bracteoles 2, 2–4.5 mm.
Flowers

sepals distinct, lanceolate, 2–4.5 mm;

corolla 7–9 mm, tube and limb white tinged with pink or purple, veins lavender or purple;

style 1.9–2.2 mm.
Capsules

subglobular to ovoid, 2.5–3.6 × 2–3.7 mm.
Seeds

0.3–0.5 mm.

Gratiola graniticola
Phenology Flowering Apr–May.
Habitat Seasonal pools on granite outcrops.
Elevation 100–300 m. (300–1000 ft.)
Distribution
from FNA
GA; SC
[BONAP county map]
Discussion

Gratiola graniticola is known from about a dozen counties in the southeastern piedmont of northern Georgia and north-central South Carolina, where it occurs only on granite flatrocks (D. Estes and R. L. Small 2007; D. F. Brunton 2009).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 267.
Parent taxa Plantaginaceae > Gratiola
Sibling taxa
G. amphiantha, G. brevifolia, G. ebracteata, G. floridana, G. heterosepala, G. lutea, G. neglecta, G. quartermaniae, G. ramosa, G. torreyi, G. virginiana, G. viscidula
Name authority D. Estes: J. Bot. Res. Inst. Texas 1: 166, figs. 3A,D, 9. (2007)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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