Arachis

This article is about the legume genus which includes peanuts. For the fictional planet, see Arrakis.
Arachis
Arachis hypogaea leaves and freshly dug pods
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Dalbergieae[1][2]
Genus: Arachis
L.
Species

See text.

Arachis is a genus of about 70 species of annual and perennial flowering plants in the pea family (Fabaceae), native to South America, and was recently assigned to the informal monophyletic Pterocarpus clade of the Dalbergieae.[1][2] At least one species, the peanut (Arachis hypogaea), is a major food crop species of global importance; some of the other species are cultivated for food to a small extent in South America. Other species such as A. pintoi are cultivated worldwide as forage and soil conditioner plants, with the leaves providing high-protein feed for grazing livestock and a nitrogen source in agroforestry and permaculture systems.

Arachis species, including the peanut, are used as food plants by some Lepidoptera species, including flame shoulder, nutmeg and turnip moths.

Species

Arachis comprises the following sections and species:[3][4]

Section Arachis

  • Arachis batizocoi Krapov. & W.C. Greg.
  • Arachis benensis Krapov. et al.
  • Arachis cardenasii Krapov. & W.C. Greg.
  • Arachis correntina (Burkart) Krapov. & W.C. Greg.
  • Arachis cruziana Krapov. et al.
  • Arachis decora Krapov. et al.
  • Arachis diogoi Hoehne
  • Arachis duranensis Krapov. & W.C. Greg.
  • Arachis glandulifera Stalker
  • Arachis gregoryi C. E. Simpson et al.
  • Arachis helodes Mart. ex Krapov. & Rigoni
  • Arachis herzogii Krapov. et al.
  • Arachis hoehnei Krapov. & W.C. Greg.
  • Arachis hypogaea L.—Peanut
    • subsp. fastigiata Waldron
      • var. aequatoriana Krapov. & W. C. Greg
      • var. fastigiata (Waldron) Krapov. & W. C. Greg
      • var. peruviana Krapov. & W. C. Greg
      • var. vulgaris Harz
    • subsp. hypogaea L.
      • var. hirsuta J. Kohler
      • var. hypogaea L.
  • Arachis ipaensis Krapov. & W.C. Greg.
  • Arachis kempff-mercadoi Krapov. et al.
  • Arachis krapovickasii C. E. Simpson et al.
  • Arachis kuhlmannii Krapov. & W.C. Greg.
  • Arachis linearifolia Valls et al.
  • Arachis magna Krapov. et al.
  • Arachis microsperma Krapov. et al.
  • Arachis monticola Krapov. & Rigoni
  • Arachis palustris Krapov. et al.
  • Arachis praecox Krapov. et al.
  • Arachis schininii Krapov. et al.
  • Arachis simpsonii Krapov. & W.C. Greg.
  • Arachis stenosperma Krapov. & W.C. Greg.
  • Arachis trinitensis Krapov. & W.C. Greg.
  • Arachis valida Krapov. & W.C. Greg.
  • Arachis villosa Benth.
  • Arachis williamsii Krapov. & W.C. Greg.

Section Caulorrhizae

Section Erectoides

  • Arachis archeri Krapov. & W.C. Greg.
  • Arachis benthamii Handro
  • Arachis brevipetiolata Krapov. & W.C. Greg.
  • Arachis cryptopotamica Krapov. & W.C. Greg.
  • Arachis douradiana Krapov. & W.C. Greg.
  • Arachis gracilis Krapov. & W.C. Greg.
  • Arachis hatschbachii Krapov. & W.C. Greg.
  • Arachis hermannii Krapov. & W.C. Greg.
  • Arachis major Krapov. & W.C. Greg.
  • Arachis martii Handro
  • Arachis oteroi Krapov. & W.C. Greg.
  • Arachis paraguariensis Chodat & Hassl.
    • subsp. capibarensis Krapov. & W. C. Greg
    • subsp. paraguariensis Chodat & Hassl.
  • Arachis porphyrocalyx Valls & C. E. Simpson
  • Arachis stenophylla Krapov. & W.C. Greg.

Section Extranervosae

  • Arachis burchellii Krapov. & W.C. Greg.
  • Arachis lutescens Krapov. & Rigoni
  • Arachis macedoi Krapov. & W.C. Greg.
  • Arachis marginata Gardner
  • Arachis pietrarellii Krapov. & W.C. Greg.
  • Arachis prostrata Benth.—Grassnut
  • Arachis retusa Krapov. et al.
  • Arachis setinervosa Krapov. & W.C. Greg.
  • Arachis submarginata Valls et al.
  • Arachis villosulicarpa Hoehne

Section Heteranthae

Section Procumbentes

  • Arachis appressipila Krapov. & W. C. Greg.
  • Arachis chiquitana Krapov. et al.
  • Arachis kretschmeri Krapov. & W.C. Greg.
  • Arachis hassleri Krapov. et al.
  • Arachis lignosa (Chodat & Hassl.) Krapov. & W.C. Greg.
  • Arachis matiensis Krapov. et al.
  • Arachis pflugeae C. E. Simpson et al.
  • Arachis rigonii Krapov. & W.C. Greg.
  • Arachis subcoriacea Krapov. & W.C. Greg.
  • Arachis vallsii Krapov. & W.C. Greg.

Section Rhizomatosae

Series Prorhizomatosae

Series Rhizomatosae

Arachis glabrata

Section Trierectoides

Section Triseminatae


Hybrids

External links

References

  1. 1 2 Lavin M, Pennington RT, Klitgaard BB, Sprent JI, de Lima HC, Gasson PE. (2001). "The dalbergioid legumes (Fabaceae): delimitation of a pantropical monophyletic clade". Am J Bot 88 (3): 503–33. doi:10.2307/2657116. PMID 11250829.
  2. 1 2 Cardoso D, Pennington RT, de Queiroz LP, Boatwright JS, Van Wyk B-E, Wojciechowskie MF, Lavin M. (2013). "Reconstructing the deep-branching relationships of the papilionoid legumes". S Afr J Bot 89: 58–75. doi:10.1016/j.sajb.2013.05.001.
  3. "ILDIS LegumeWeb entry for Arachis". International Legume Database & Information Service. Cardiff School of Computer Science & Informatics. Retrieved 5 February 2014.
  4. USDA, ARS, National Genetic Resources Program. "GRIN species records of Arachis". Germplasm Resources Information Network—(GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved 5 February 2014.
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