Flora of North America species comparison

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Gratiola torreyi

yellow hedge-hyssop
Habit Annuals.
Stems

ascending to erect, usually much-branched from base, 5–10 cm, glabrous.
Leaves

blade linear-lanceolate, 5–15 × 1–5 mm, margins entire or with 1 or 2 pairs of teeth distally, apex obtuse, surfaces glabrous.
Pedicels

slender, 4–10 mm, length 1–2.3 times bract, glabrous;

bracteoles 1, 1.5–4 mm.
Flowers

sepals distinct, linear to linear-lanceolate, 3–6 mm;

corolla 9–12 mm, tube yellow to orangish yellow, veins yellow to greenish yellow or brownish yellow, limb yellow;

style 3–5 mm.
Capsules

ovoid, 2–2.5 × 1.5–2 mm.
Seeds

0.3–0.4 mm.

Gratiola torreyi
Phenology Flowering Mar–Apr.
Habitat Wet, exposed soils in meadows, clearings in post oak woodlands, saline prairies.
Elevation 0–100 m. (0–300 ft.)
Distribution
from FNA
LA; TX
Discussion

The name Gratiola flava has been widely used for G. torreyi. F. W. Pennell (1935) synonymized G. torreyi with G. neglecta, stating that the type of G. torreyi (Wright s.n., NY) has white corolla lobes and yellow corolla tubes instead of entirely golden yellow corollas as reported by Small in the protologue of G. torreyi. The statement by Pennell appears to be in error.

M. H. MacRoberts et al. (2007) discussed historic and recent collections of Gratiola torreyi (as G. flava) from Louisiana. The provenance of collections attributed to Arkansas is equivocal (MacRoberts et al.).

Gratiola pusilla Torrey ex Bentham 1846 (not Willdenow 1797) is an illegitimate name and pertains here.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 268.
Parent taxa Plantaginaceae > Gratiola
Sibling taxa
G. amphiantha, G. brevifolia, G. ebracteata, G. floridana, G. graniticola, G. heterosepala, G. lutea, G. neglecta, G. quartermaniae, G. ramosa, G. virginiana, G. viscidula
Synonyms G. flava
Name authority Small: Fl. S.E. U.S., 1066, 1338. (1903)
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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