Flora of North America species comparison

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Mecardonia acuminata

axilflower
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.

Mecardonia acuminata
Distribution
from FNA
AL; AR; FL; GA; IL; IN; KS; LA; MO; MS; NC; OK; SC; TN; TX; VA; WV
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Stems branched from bases and diffuse; fruiting pedicels ascending, 1–2 times bracts.
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.
var. acuminata
2. Fruiting pedicels 10–18 mm, 1/2–1 times bracts.
var. microphylla
Source FNA vol. 17, p. 273.
Parent taxa Plantaginaceae > Mecardonia
Sibling taxa
M. procumbens
Subordinate taxa
M. acuminata var. acuminata, M. acuminata var. microphylla, M. acuminata var. peninsularis
Synonyms Gratiola acuminata, Bacopa acuminata
Name authority (Walter) Small: Fl. S.E. U.S., 1065, 1337. (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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