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shrubby copperleaf

Habit Herbs, perennial, 2–5 dm, monoecious.
Stems

erect, short-pubescent and hirsute.

Leaves

petiole 0.2–1 cm;

blade rhombic-ovate to ovate, or proximal suborbiculate, 2–6 × 1–3 cm, base acute to rounded, margins serrate to crenate-serrate, apex acute to acuminate.

Inflorescences

bisexual, terminal;

peduncle 0.3–0.5(–1) cm, pistillate portion 4–7 × 1.6–2 cm, staminate portion 0.5–3.5 cm;

allomorphic pistillate flowers rarely present, replacing all or part of staminate portion of inflorescence.

Pedicels

of allomorphic flowers 3–5 mm.

Pistillate flowers

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

styles multifid or laciniate.

Capsules

muricate, pubescent;

allomorphic fruits obovoid, 2 × 1.5 mm, muricate, pubescent.

Seeds

1.5–2 mm, minutely pitted.

Pistillate

bracts (normal flowers) loosely arranged (inflorescence axis visible between bracts), 8–12 × 7–11 mm, abaxial surface sparsely pubescent and stipitate-glandular;

lobes (3–)5–7(–8), triangular to attenuate, 1/5–1/3 bract length or terminal lobe longer; of allomorphic flowers absent.

2n

= 40 (Mexico).

Acalypha phleoides

Phenology Flowering and fruiting spring–fall.
Habitat Rocky areas, grasslands, oak, pine, or juniper woodlands.
Elevation 100–2600 m. (300–8500 ft.)
Distribution
from FNA
AZ; NM; TX; Mexico; Central America (Guatemala)
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[BONAP county map]
Discussion

Plants from the United States have nearly always been called Acalypha lindheimeri, distinguished from A. phleoides on the basis of leaf shape and bract lobing. Although plants from Texas generally can be distinguished from plants from central Mexico southward, plants from intervening regions in the United States and Mexico include a full range of intermediates (G. A. Levin 1999b).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 12, p. 165.
Parent taxa Euphorbiaceae > Acalypha
Sibling taxa
A. alopecuroidea, A. arvensis, A. australis, A. californica, A. chamaedrifolia, A. deamii, A. gracilens, A. monococca, A. monostachya, A. neomexicana, A. ostryifolia, A. poiretii, A. radians, A. rhomboidea, A. setosa, A. virginica, A. wilkesiana
Synonyms A. lindheimeri, A. lindheimeri var. major
Name authority Cavanilles: Anales Hist. Nat. 2: 139. (1800)
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