Acmella

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]

For the genus of snails, see Acmella (gastropod).

Acmella
Acmella ciliata
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Tribe:
Heliantheae[1]
Genus:
Acmella

Rich. ex Pers.
Type species
Acmella repens
(Walter) Rich.[2][3]
Synonyms[3]
  • Spilanthes section Acmella (Pers.) DC.
  • Athronia Neck

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
  • Acmella alpestris (Griseb.) R.K.Jansen
  • Acmella bellidioides (Sm.) R.K.Jansen
  • Acmella brachyglossa Cass.
  • Acmella calva (DC.) R.K.Jansen
  • Acmella caulirhiza Delile
  • Acmella ciliata (Kunth) Cass.
  • Acmella darwinii (D.M.Porter) R.K.Jansen
  • Acmella decumbens (Sm.) R.K.Jansen
  • Acmella filipes (Greenm.) R.K.Jansen
  • Acmella glaberrima (Hassl.) R.K.Jansen
  • Acmella grandiflora (Turcz.) R.K.Jansen
  • Acmella grisea (Chodat) R.K.Jansen
  • Acmella iodiscaea (A.H.Moore) R.K.Jansen
  • Acmella leptophylla (DC.) R.K.Jansen
  • Acmella leucantha (Kunth) R.K.Jansen
  • Acmella lundellii R.K.Jansen
  • Acmella oleracea (L.) R.K.Jansen
  • Acmella oppositifolia (Lam.) R.K.Jansen
  • Acmella paniculata (Wall. ex DC.) R.K.Jansen
  • Acmella papposa (Hemsl.) R.K.Jansen
  • Acmella pilosa R.K.Jansen
  • Acmella poliolepidica (A.H.Moore) R.K.Jansen
  • Acmella psilocarpa R.K.Jansen
  • Acmella pusilla (Hook. & Arn.) R.K.Jansen
  • Acmella radicans (Jacq.) R.K.Jansen
  • Acmella ramosa (Hemsl.) R.K.Jansen
  • Acmella repens (Walter) Rich. ex Pers.
  • Acmella serratifolia R.K.Jansen
  • Acmella sodiroi (Hieron.) R.K.Jansen
  • Acmella uliginosa (Sw.) Cass.
gollark: Really? Wow.
gollark: !next resurrect heavserver
gollark: We need to do one to one mappings else problems.
gollark: ++remind 2d PotatOS initiated.
gollark: ?remind 3d Hi apionet

References
  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. lectotype designated by Jansen, Syst. Bot. Monogr. 8: 19 (1985)
  3. Tropicos, Acmella Pers.
  4. "Acmella Richard". Flora of North America.
  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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