Flora of North America species comparison

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Acmella repens

Acmella pusilla

oppositeleaf spotflower

dwarf spotflower
Leaves

petioles 3–40+ mm;

blades ovate to lance-ovate, mostly 20–40(–100) × 10–35 mm, margins dentate to denticulate or entire.

petioles 2–4 mm;

blades lanceolate, mostly 12–40 × 3–10 mm, margins usually sinuate-dentate, rarely entire.
Cypselae

1–2.5 mm, ciliate or not, tips of cilia straight;

pappi 0 or of 1–2(–3) bristles.

1.2–1.6 mm, ciliate or not, tips of cilia recurved;

pappi 0 or of 1–2 bristles.
2n

= 52.

= 26, 52.

Acmella repens

Acmella pusilla
Phenology Flowering Jan–Dec. Flowering May–Sep.
Habitat Disturbed, wet or drying sites Disturbed sites
Elevation 0–200 m (0–700 ft) 0–10 m (0–0 ft)
Distribution
from FNA
AL; AR; FL; GA; LA; MO; MS; NC; SC; TN; TX; Mexico (Coahuila)
[WildflowerSearch map]
[BONAP county map]
from FNA
FL; GA; NC; SC; South America [Introduced in North America]
[BONAP county map]
Source FNA vol. 21, p. 133. FNA vol. 21, p. 133.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Acmella Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Acmella
Sibling taxa
A. pusilla
A. repens
Synonyms Anthemis repens, A. oppositifolia var. repens, Spilanthes americana var. repens Spilanthes pusilla
Name authority (Walter) Persoon: Syn. Pl. 2: 473. (1807) (Hooker & Arnott) R. K. Jansen: Syst. Bot. Monogr. 8: 46. (1985)
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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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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