Acmella

Acmella
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Heliantheae
Genus:	Acmella; Rich. ex Pers.
Type species
	Acmella repens; (Walter) Rich.
Synonyms
	Spilanthes section Acmella (Pers.) DC.; Athronia Neck;

Acmella is a genus of plants in the aster family, Asteraceae,^[4]^[5] described as a genus in 1807.^[6]^[3] It is native to the Americas and has been introduced to Asia, Africa, the Pacific islands, and Australia.^[4]

One familiar species is Acmella oleracea, which has been widely cultivated for centuries. It is used for food and medicine, and as an insecticide and an ornamental plant. Its common use as an herbal remedy for toothache and oral infections earned it the nickname toothache plant.^[5]

These are annual or perennial herbs with branching stems usually reaching 10 to 20 centimeters in length, growing prostrate or erect. The oppositely arranged leaves are smooth-edged or toothed, and usually have rough or soft hairs. The flower heads are usually solitary at the tips of the stem branches, or occasionally borne in inflorescences. There are several to many disc florets with bell-shaped throats and 4 or 5 triangular lobes, usually yellow, or sometimes orange. Some species lack ray florets, but some have 5 to 20 or more, usually in yellow or orange, but occasionally white or purple. The disc florets are bisexual, but any ray florets are pistillate.^[4]

Species[]

Accepted Species^[7]

Acmella alba (L'Hér.) R.K.Jansen
(Griseb.) R.K.Jansen
(Sm.) R.K.Jansen
Cass.
(DC.) R.K.Jansen
Delile
(Kunth) Cass.
(D.M.Porter) R.K.Jansen
(Sm.) R.K.Jansen
(Greenm.) R.K.Jansen
(Hassl.) R.K.Jansen
(Turcz.) R.K.Jansen
(Chodat) R.K.Jansen
(A.H.Moore) R.K.Jansen
(DC.) R.K.Jansen
Acmella leucantha (Kunth) R.K.Jansen
R.K.Jansen
Acmella oleracea (L.) R.K.Jansen
(Lam.) R.K.Jansen
(Wall. ex DC.) R.K.Jansen
(Hemsl.) R.K.Jansen
Acmella pilosa R.K.Jansen
(A.H.Moore) R.K.Jansen
R.K.Jansen
Acmella pusilla (Hook. & Arn.) R.K.Jansen
(Jacq.) R.K.Jansen
(Hemsl.) R.K.Jansen
Acmella repens (Walter) Rich. ex Pers.
R.K.Jansen
(Hieron.) R.K.Jansen
Acmella uliginosa (Sw.) Cass.

References[]

^ Panero, J. L.; et al. (1999). "Phylogenetic relationships of Subtribe Ecliptinae (Asteraceae: Heliantheae) based on chloroplast DNA restriction site data". American Journal of Botany. Botanical Society of America. 86 (3): 413–27. doi:10.2307/2656762. JSTOR 2656762. PMID 10077503.
^ lectotype designated by Jansen, Syst. Bot. Monogr. 8: 19 (1985)
^ ^a ^b ^c Tropicos, Acmella Pers.
^ ^a ^b ^c "Acmella Richard". Flora of North America.
^ ^a ^b Chung, K.; et al. (2008). "Notes on Acmella (Asteraceae: Heliantheae) in Taiwan" (PDF). Bot Stud. 49: 73–82. Archived from the original (PDF) on 2014-11-03.
^ Persoon, Christiaan Hendrik. 1807. Synopsis Plantarum 2: 472-473 in Latin
^ "The Plant List: A Working List of All Plant Species". Retrieved June 5, 2014.

External links[]

GRIN Species Records of Acmella. Germplasm Resources Information Network (GRIN).

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[1] Panero, J. L.; et al. (1999). "Phylogenetic relationships of Subtribe Ecliptinae (Asteraceae: Heliantheae) based on chloroplast DNA restriction site data". American Journal of Botany. Botanical Society of America. 86 (3): 413–27. doi:10.2307/2656762. JSTOR 2656762. PMID 10077503.

[2] totype designated by Jansen, Syst. Bot. Monogr. 8: 19 (1985)

[y-3] Tropicos, Acmella Pers.

[fna-4] "Acmella Richard". Flora of North America.

[chung-5] Chung, K.; et al. (2008). "Notes on Acmella (Asteraceae: Heliantheae) in Taiwan" (PDF). Bot Stud. 49: 73–82. Archived from the original (PDF) on 2014-11-03.

[6] Persoon, Christiaan Hendrik. 1807. Synopsis Plantarum 2: 472-473 in Latin

[7] "The Plant List: A Working List of All Plant Species". Retrieved June 5, 2014.

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