Ammannia latifolia
pink redstem
erect, sparsely branched, or branched proximally.
blades lanceolate-linear to oblong, elliptic, or spatulate, 15–70(–100) × 4–15(–21) mm.
simple cymes, (1–)3–10-flowered mid stem;
peduncle stout, 3 mm.
0–1 mm.
3.5–5.5 mm diam., included to scarcely surpassing sepals, splitting irregularly.
tube urceolate, 3–4 mm;
epicalyx segments as long as or slightly longer than sepals;
sepals 4(–6), shallowly deltate, with mucronate apex;
petals 0–4(–6), pale pink to white, 1 × 1 mm;
stamens 4(–8);
anthers yellow;
style stout, included, ca. 0.5 mm;
stigma capitate.
= 48.
Ammannia latifolia
Ammannia latifolia flowers spring through fall in the northern part of the range; year-round from southern Florida southward.
Petals in Ammannia latifolia are consistently present from the Gulf Coast and from Georgia northward along the Atlantic Coast, and are commonly reduced in number or absent along the southern Atlantic and Gulf coasts and southward. Presence of petals is best determined in the bud.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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