Sophronanthe
hedge-hyssop
ascending to erect, villous (hairs jointed), rarely glabrous.
cauline, sometimes also basal, opposite;
petiole absent, sometimes present on basal leaves;
blade not fleshy, leathery, margins entire or serrate.
axillary, flowers 1 or 2 per node;
bracts present.
present or absent;
bracteoles present, 2.
bisexual;
sepals 5, distinct, linear to linear-lanceolate, calyx ± bilaterally symmetric, campanulate;
corolla white, sometimes tinged purple or pink, bilaterally symmetric, bilabiate to bilabiate and personate, tubular to salverform, tube base not spurred or gibbous, lobes 5, abaxial 3, adaxial 2, throat hairy;
stamens 2, medially adnate to corolla, filaments glabrous, pollen sacs parallel to filaments, connective not dilated;
staminodes 0 or 2, minute;
ovary 2-locular, placentation axile;
stigma crateriform.
capsules, dehiscence septicidal, sometimes also loculicidal.
ca. 200, yellow to brown or black, ovoid to short-cylindric, wings absent.
Sophronanthe
Species 2 (2 in the flora).
The two species of Sophronanthe often have been included in Gratiola or in the monospecific genera Sophronanthe (S. hispida) and Tragiola (S. pilosa). Molecular and morphological data support the monophyly of Sophronanthe (D. Estes 2008), which is sister to Gratiola in the narrow sense.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaf blades 0.7–3 mm wide, linear to lanceolate-ovate, margins prominently revolute; corollas salverform, 7–16 mm. | S. hispida |
1. Leaf blades 4–11 mm wide, lanceolate to ovate, margins not or slightly revolute; corollas tubular, 5–9 mm. | S. pilosa |
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