Acalypha australis

Linnaeus

Sp. Pl. 2: 1004. 1753. 1753

Common names: Asian copperleaf
Introduced
Treatment appears in FNA Volume 12. Treatment on page 169. Mentioned on page 163, 164.

Herbs, annual, 3–6 dm, monoecious. Stems erect, densely to sparsely pilose. Leaves: petiole 0.5–4 cm; blade ovate to broadly lanceolate, 2–8 × 1.5–4 cm, base cuneate to obtuse, margins serrate, apex acute to short-acuminate. Inflorescences bisexual, axillary; peduncle 0.5–4 (–6) cm, pistillate portion 1–2 × 1.5–2.5 cm or pistillate bract solitary, staminate portion 0.5–3 cm; allomorphic pistillate flowers rare, when present replacing staminate part of inflorescence. Pistillate bracts (normal flowers) loosely arranged (inflorescence axis visible between bracts) or solitary, 10–15 (–20) × 8–12 mm, abaxial surface sparsely pubescent; lobes 12–15, rounded, 1/20 bract length; of allomorphic flowers absent. Pedicels of allomorphic flowers rudimentary. Pistillate flowers: pistil 3-carpellate (normal flowers), 2-carpellate (allomorphic flowers); styles multifid or laciniate. Capsules muricate, pubescent; allomorphic fruits obovoid, 2 × 1.2 mm, muricate, pubescent. Seeds 1.5–1.8 mm, minutely pitted.


Phenology: Flowering and fruiting late summer–fall.
Habitat: Disturbed areas.
Elevation: 0–20 m.

Distribution

V12 924-distribution-map.jpg

Introduced; N.J., N.Y., Asia (China), Asia (Japan), Asia (Korea), Asia (Taiwan), Pacific Islands (Philippines)

Discussion

Acalypha australis, native to eastern Asia, became established in metropolitan New York City in the 1980s. It was also collected once in 1900 in Oregon (Suksdorf 2892, GH), and apparently has not persisted there.

Selected References

None.

Lower Taxa

None.

"elongated" is not a number.

... more about "Acalypha australis"
Geoffrey A. Levin +
Linnaeus +
cuneate +  and obtuse +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ovate;broadly lanceolate +
1.5cm;4cm +
solitary +  and arranged +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
thread-like +
Asian copperleaf +
N.J. +, N.Y. +, Asia (China) +, Asia (Japan) +, Asia (Korea) +, Asia (Taiwan) +  and Pacific Islands (Philippines) +
0–20 m. +
muricate +
obovoid +
1.2 cm12 mm <br />0.012 m <br /> (?) +
Disturbed areas. +
drought-deciduous +  and persistent +
1/20;12;15 +
rounded +
palmate +  and pinnate +
crenate +  and subentire +
allomorphic +, pistillate +  and staminate +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
connate;distinct +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering and fruiting late summer–fall. +
2-carpellate +  and 3-carpellate +
staminate +  and pistillate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
ellipsoid +  and subglobose +
not petaloid +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
distinct +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Introduced +
deciduous +  and persistent +
connate +  and distinct +
laciniate +  and multifid +
Acalypha australis +
Acalypha +
species +
spikelike +