Swainsona

Swainsona is a large genus of flowering plants native to Australasia. There are 85 species, all but one of which are endemic to Australia.

Swainsona
Swainsona villosa
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Galegeae
Subtribe: Astragalinae
Genus: Swainsona
Salisb.
Species

See text.

Synonyms
  • Cyclogyne Benth. ex Lindl.
  • Loxidium Vent.

A member of the family Fabaceae (legumes), it is most closely related to the New Zealand genera Montigena (scree pea), Clianthus (kakabeak), and Carmichaelia (New Zealand broom).[1]

Swainsona is named after English botanist Isaac Swainson.

A few species are known to produce swainsonine, a phytotoxin harmful to livestock (see Locoweed). In Australia, animals intoxicated with swainsonine are said to be pea struck.[2]


Species

The following species are accepted by Plants of the World Online:[3]

  • Swainsona acuticarinata (A.T.Lee) Joy Thomps.
  • Swainsona adenophylla J.M.Black
  • Swainsona affinis (A.T.Lee) Joy Thomps.
  • Swainsona beasleyana F.Muell.
  • Swainsona behriana F.Muell. ex J.M.Black
  • Swainsona brachycarpa Benth.
  • Swainsona bracteata (Maiden & Betche) Joy Thomps.
  • Swainsona burkei F.Muell. ex Benth.
  • Swainsona burkittii F.Muell. ex Benth.
  • Swainsona cadellii F.Muell. ex C.Moore
  • Swainsona calcicola Joy Thomps.
  • Swainsona campestris J.M.Black
  • Swainsona campylantha F.Muell.
  • Swainsona canescens (Benth.) F.Muell.
  • Swainsona colutoides F.Muell.
  • Swainsona complanata Joy Thomps.
  • Swainsona cornuta Joy Thomps.
  • Swainsona cyclocarpa F.Muell.
  • Swainsona decurrens A.T.Lee
  • Swainsona dictyocarpa J.M.Black
  • Swainsona disjuncta Joy Thomps.
  • Swainsona ecallosa Sprague
  • Swainsona elegans A.T.Lee
  • Swainsona elegantoides (A.T.Lee) Joy Thomps.
  • Swainsona eremaea Joy Thomps.
  • Swainsona extrajacens Joy Thomps.
  • Swainsona fissimontana J.M.Black
  • Swainsona flavicarinata J.M.Black
  • Swainsona formosa (G.Don) Joy Thomps.
  • Swainsona forrestii F.Muell. ex A.T.Lee
  • Swainsona fraseri Benth.
  • Swainsona fuscoviridis Joy Thomps.
  • Swainsona galegifolia (Andrews) R.Br.
  • Swainsona gracilis Benth.
  • Swainsona greyana Lindl.
  • Swainsona halophila Joy Thomps.
  • Swainsona incei W.R.Price
  • Swainsona katjarra R.W.Davis & T.Hammer
  • Swainsona kingii F.Muell.
  • Swainsona laciniata A.T.Lee
  • Swainsona laxa R.Br.
  • Swainsona leeana J.Z.Weber
  • Swainsona lessertiifolia DC.
  • Swainsona longicarinata Joy Thomps.
  • Swainsona longipilosa Joy Thomps.
  • Swainsona luteola F.Muell.
  • Swainsona maccullochiana F.Muell.
  • Swainsona microcalyx J.M.Black
  • Swainsona microphylla A.Gray
  • Swainsona minutiflora A.T.Lee
  • Swainsona monticola A.Cunn. ex Benth.
  • Swainsona murrayana Wawra
  • Swainsona oligophylla F.Muell. ex Benth.
  • Swainsona oliveri F.Muell.
  • Swainsona oroboides F.Muell. ex Benth.
  • Swainsona paradoxa W.Fitzg.
  • Swainsona parviflora Benth.
  • Swainsona paucifoliolata Joy Thomps.
  • Swainsona pedunculata A.T.Lee
  • Swainsona perlonga Joy Thomps.
  • Swainsona phacoides Benth.
  • Swainsona plagiotropis F.Muell.
  • Swainsona procumbens (F.Muell.) F.Muell.
  • Swainsona pterostylis (DC.) Bakh.f.
  • Swainsona purpurea (A.T.Lee) Joy Thomps.
  • Swainsona pyrophila Joy Thomps.
  • Swainsona queenslandica Joy Thomps.
  • Swainsona recta A.T.Lee
  • Swainsona reticulata J.M.Black
  • Swainsona rostellata A.T.Lee
  • Swainsona rostrata Joy Thomps.
  • Swainsona rotunda Joy Thomps.
  • Swainsona sejuncta Joy Thomps.
  • Swainsona sericea (A.T.Lee) J.M.Black ex H.Eichler
  • Swainsona similis Joy Thomps.
  • Swainsona stenodonta F.Muell.
  • Swainsona stipularis F.Muell.
  • Swainsona swainsonioides (Benth.) A.T.Lee ex J.M.Black
  • Swainsona tanamiensis Joy Thomps.
  • Swainsona tenuis E.Pritz.
  • Swainsona tephrotricha F.Muell.
  • Swainsona thompsoniana R.W.Davis & P.J.H.Hurter
  • Swainsona unifoliolata F.Muell.
  • Swainsona vestita Joy Thomps.
  • Swainsona villosa J.M.Black
  • Swainsona viridis J.M.Black

References
  1. Wagstaff, Steven J.; Peter B. Heenan; Michael J. Sanderson (1999). "Classification, origins, and patterns of diversification in New Zealand Carmichaelia (Fabaceae)". American Journal of Botany. American Journal of Botany, Vol. 86, No. 9. 86 (9): 1346–1356. doi:10.2307/2656781. JSTOR 2656781. PMID 10487821. Retrieved 2008-07-26.
  2. "THE DARLING PEA". The Sydney Morning Herald. National Library of Australia. 14 May 1897. p. 5. Retrieved 16 May 2014.
  3. "Swainsona Salisb." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2 April 2023.
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