Flora of North America species comparison

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Acalypha alopecuroidea

foxtail copperleaf
Habit Herbs, annual, 2–6 dm, monoecious.
Stems

erect, short-pubescent and stipitate-glandular.
Leaves

petiole 0.5–7 cm, stipitate-glandular;

blade ovate to broadly ovate, 2–8 × 1.5–5 cm, base rounded or subcordate, margins serrate, apex acuminate.
Inflorescences

unisexual, axillary (staminate) and terminal (pistillate);

staminate peduncle 0.1–0.6 cm, stipitate-glandular, fertile portion 0.2–0.8 cm;

pistillate peduncle 0.2–1 cm, stipitate-glandular, fertile portion 2–6 × 0.8–1.5 cm;

allomorphic pistillate flowers common, terminal on pistillate or, rarely, staminate inflorescences.
Pedicels

of allomorphic flowers 5–15 mm.
Pistillate flowers

pistil 3-carpellate (normal flowers), 1(–2)-carpellate (allomorphic flowers);

styles unbranched or rarely 2-fid.
Capsules

smooth, pubescent and stipitate-glandular or glabrate;

allomorphic fruits obovoid, 1–1.5 × 0.9–1.2 mm, muricate, hirsute.
Seeds

1–1.1 mm, minutely pitted.
Pistillate

bracts (normal flowers) crowded (inflorescence axis not visible between bracts), 8–12 × 3–4 mm, abaxial surface long-hirsute (hairs to 2 mm) and stipitate-glandular;

lobes 3–5, proximally deltate with linear tips, 3/4 bract length, smooth; of allomorphic flowers absent.

Acalypha alopecuroidea
Phenology Flowering and fruiting late summer–fall.
Habitat Disturbed areas.
Elevation 0–40 m. (0–100 ft.)
Distribution
from FNA
AL; FL; LA; Mexico; Central America; West Indies; n South America [Introduced in North America]
[BONAP county map]
Discussion

Acalypha alopecuroidea has been established in the United States since at least the 1950s.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 12, p. 167.
Parent taxa Euphorbiaceae > Acalypha
Sibling taxa
A. arvensis, A. australis, A. californica, A. chamaedrifolia, A. deamii, A. gracilens, A. monococca, A. monostachya, A. neomexicana, A. ostryifolia, A. phleoides, A. poiretii, A. radians, A. rhomboidea, A. setosa, A. virginica, A. wilkesiana
Name authority Jacquin: Collectanea 3: 196. (1791)
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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