Mecardonia acuminata
Fl. S.E. U.S., 1065, 1337. 1903.
Common names: Axilflower
Selected by author to be illustratedEndemic
Basionym: Gratiola acuminata Walter Fl. Carol., 61. 1788
Synonyms: Bacopa acuminata (Walter) B. L. Robinson
Revision as of 19:31, 24 September 2019 by FNA>Volume Importer
Stems erect, 10–60 cm, glandular. Leaves glandular; blade 9–30 × 6–10 mm, 1–2 times bracts, margins weakly serrate. Pedicels divaricate or ascending, 6–22 mm. Flowers: calyx lobes unequal; corolla white with purple veins in throat, adaxial lobes connate 1/2–2/3 lengths, abaxial lip not prominent; stamens distally adnate to corolla. Capsules 6–7 mm. Seeds 40–60, black, radial walls of reticulum smooth.
Distribution
c, e United States.
Discussion
Varieties 3 (3 in the flora).
Selected References
None.
Lower Taxa
Key
1 | Stems branched from bases and diffuse; fruiting pedicels ascending, 1–2 times bracts. | Mecardonia acuminata var. peninsularis |
1 | Stems branched from middles, rarely diffuse; fruiting pedicels divaricate, 1/2–2 times bracts. | > 2 |
2 | Fruiting pedicels 17–35 mm, 1–2 times bracts. | Mecardonia acuminata var. acuminata |
2 | Fruiting pedicels 10–18 mm, 1/2–1 times bracts. | Mecardonia acuminata var. microphylla |