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Acmella repens

Acmella repens (Walter) Rich.

creeping spotflower

NCBG PLANT INDEX
ID_PLANT: ACRE6
SCIENTIFIC NAME: Acmella repens
GENUS: Acmella
FAMILY: ASTERA - Asteraceae (Aster Family)

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BLOOM TIME: Jul-Dec
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White Red Pink Orange Yellow Green Blue Lavender Purple Violet Brown Not Applicable

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USDA PLANTS DATABASE
USDA Symbol: ACRE6
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NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FACW FACW FACW FACW

This information is derived from the U.S. Army Corps of Engineers 2016 National Wetland Plant List, Version 3.3 (Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X). Regions: AGCP-Atlantic and Gulf Coastal Plain, AK-Alaska, AW-Arid West, CB-Caribbean, EMP-Eastern Mountains and Piedmont, GP-Great Plains, HI-Hawaii, MW-Midwest, NCNE-Northcentral and Northeast, WMCV-Western Mountains, Valleys & Coast
WEAKLEY FLORA
SCIENTIFIC NAME: Acmella repens
COMMON NAME: Creeping Spotflower
SYNONYMY: [= FNA, Il; = Spilanthes americana (Mutis ex Linnaeus f.) Hieronymus var. repens (Walter) A.H. Moore - F, RAB; < Spilanthes americana - C, G, GW, S, SE; = Acmella oppositifolia (Lamarck) R.K. Jansen var. repens (Walter) R.K. Jansen - K, WH3, Z]
PHENOLOGY: Jul-Dec.
HABITAT: Floating vegetation mats, roadsides, streambanks, other moist, open, habitats.
COMMENTS: Se. NC south to s. FL, west to e. TX, north in the Mississippi Embayment to w. TN and s. MO. Jansen (1985) treats this as var. repens of A. oppositifolia, the typic var. oppositifolia widely distributed from c. Mexico south through Central America into n. South America, stating that var. repens can be easily separated from var. oppositifolia by its lanceolate, acuminate phyllaries and short double hairs on the achene margins. Jansen also states that four factors have caused extreme difficulties in delimiting taxa at the specific and infraspecific level within this group: very close morphological similarity; polyploidy; hybridization, especially between different ploidy levels; and asexual reproduction. In his more statistical taxonomic analyses, his var. repens (tetraploid, and the only taxon out of 39 native to North America) separates rather well from A. oppositifolia (diploid, tetraploid, and hexaploid). Given the morphological distinctiveness and substantial allopatry of the two taxa, I prefer not to associate this taxon as a variety of the complex A. oppositifolia.
RANGE MAP: Acmella repens.png

Key to Map Symbols.

ABOUT FAMILY (Weakley Flora)
Asteraceae Dumortier 1822 or COMPOSITAE Giseke 1792 (Aster Family)
SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution.
REFERENCE: Cronquist (1980)=SE throughout family treatment.
ABOUT GENUS (Weakley Flora)
Acmella L.C. Richard ex C.H. Persoon 1807 (Spotflower)
SUMMARY: A genus of about 30 species, herbs, primarily of tropical distribution.
REFERENCE: Jansen (1985)=Z; Strother in FNA (2006c); Cronquist (1980)=SE.
HERBARIUM RESOURCES
SERNEC: Find Acmella repens in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Acmella repens in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES
USDA: Find Acmella repens in USDA Plants
NPIN: Find Acmella repens in NPIN Database
FNA: Find Acmella repens in the Flora of North America (if available)
Google: Search Google for Acmella repens

NCBG RECORD
ID IMAGE1: 0
ID IMAGE2: 0
ID IMAGE3: 0
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2016-12-30

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