Trianthema

Trianthema is a genus of flowering plants in the ice plant family, Aizoaceae. Members of the genus are annuals or perennials generally characterized by fleshy, opposite, unequal, smooth-margined leaves, a prostrate growth form, flowers with five perianth segments subtended by a pair of bracts, and a fruit with a winged lid. The genus contains about 30 described species growing in tropical and subtropical regions, especially Australia. One common species, Trianthema portulacastrum, desert horse purslane, is frequent as a weed in agricultural areas and is widely distributed.[2]

Trianthema
Trianthema pilosum
Trianthema sp.
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Aizoaceae
Subfamily: Sesuvioideae
Genus: Trianthema
L.[1]
Species

About 30, see text.

Synonyms[1]

Taxonomy

The genus Trianthema was first formally described in 1753 by Carl Linnaeus in Species Plantarum.[1][3]

Species list

The following is a listed of species of Trianthema according to Plants of the World Online as at October 2020:[1]

  • Trianthema argentinum Hunz. & A.A.Cocucci (Argentina)
  • Trianthema ceratosepalum Volkens & Irmsch. (Kenya, Somalia, Tanzania)
  • Trianthema clavatum (J.M.Black) H.E.K.Hartmann & Liede (South Australia)
  • Trianthema compactum C.T.White (Queensland, Northern Territory))
  • Trianthema corallicola H.E.K.Hartmann & Liede (Kenya, Somalia)
  • Trianthema corymbosum (E.Mey. ex Sond.) H.E.K.Hartmann & Liede (South Africa)
  • Trianthema crystallinum (Forssk.) Vahl (Bangladesh, Myanmar, Africa, Yemen, South Africa)
  • Trianthema cussackianum F.Muell. (Western Australia)
  • Trianthema cypseleoides (Fenzl) Benth. (New South Wales)
  • Trianthema glossostigma F.Muell. (Northern Territory, Western Australia)
  • Trianthema hecatandrum Wingf. & M.F.Newman (Venezuela)
  • Trianthema hereroense Schinz (Namibia)
  • Trianthema kimberleyi Bittrich & K.M.Jenssen (Western Australia)
  • Trianthema megaspermum A.M.Prescott (Northern Territory)
  • Trianthema mozambiquense H.E.K.Hartmann & Liede (Mozambique)
  • Trianthema oxycalyptrum F.Muell. (Northern Territory, Western Australia)
  • Trianthema pakistanense H.E.K.Hartmann & Liede (India, Pakistan)
  • Trianthema parvifolium E.Mey. ex Sond. (Angola, Botswana, Cape Provinces, Free State, Namibia, Northern Provinces)
  • Trianthema patellitectum A.M.Prescott (Northern Territory, Western Australia)
  • Trianthema pilosum F.Muell. (Australia)
  • Trianthema portulacastrum L. – Desert horse purslane (many continents)
  • Trianthema rhynchocalyptrum F.Muell. (Northern Territory, Queensland)
  • Trianthema salsoloides Fenzl ex Oliv. (Angola, Botswana, Cape Provinces, Free State, Kenya, Mozambique, Namibia, Northern Provinces, Sudan, Tanzania))
  • Trianthema sanguineum Volkens & Irmsch. (Kenya, Tanzania)
  • Trianthema sheilae A.G.Mill. & J.Nyberg (Eritea, Ethiopia, Saudi Arabia, Sudan, Yemen)
  • Trianthema triquetrum Willd. ex Spreng. (Shara to Sahel to South Africa, Indian subcontinent, to Thailand, North-east Jawa to Lesser Sunda Island, Australia)
  • Trianthema turgidifolium F.Muell. (Northern Territory, Western Australia)
  • Trianthema ufoense H.E.K.Hartmann & Liede (Northern Territory, Queensland, South Australia)
  • Trianthema vleiense H.E.K.Hartmann & Liede (Cape Provinces, Free State, Northern Provinces)

References
  1. "Trianthema L." Plants of the World Online. Retrieved 20 October 2020.
  2. Jacobs, Surrey Wilfrid Laurance; Highet, Jeannie. "Genus Trianthema". Royal Botanic Garden Sydney. Retrieved 20 October 2020.
  3. Linnaeus, Carl (1753). Species Plantarum. Berlin. pp. 223–224. Retrieved 20 October 2020.

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