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Petrobium

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Petrobium
Petrobium arboreum[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Spermatophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Coreopsideae
Genus: Petrobium
R.Br. 1818 not Bong. 1838 (Melastomataceae)[3]
Species:
P. arboreum
Binomial name
Petrobium arboreum
(J.R.Forst. & G.Forst.) R.Br. ex Spreng.
Synonyms[4][5]
  • Drimyphyllum Burch. ex DC.
  • Laxmannia J.R.Forst. & G.Forst. 1776, rejected name, not R.Br. 1810 (Asparagaceae) nor Schreb. 1791 (Rutaceae) nor S.G.Gmel. ex Trin. 1818 (Rubiaceae)
  • Pharetranthus Klatt
  • Bidens arborea (J.R.Forst. & G.Forst.) Roxb.
  • Drimyphyllum helenianum Burch. ex DC., pro syn.
  • Laxmannia arborea J.R.Forst. & G.Forst.
  • Petrobium forsteri Cass., nom. illeg. superfl.
  • Pharetranthus ferrugineus Klatt
  • Spilanthes arborea (J.R.Forst. & G.Forst.) G.Forst.
  • Spilanthes pseudogummifera G.Forst. ex DC.
  • Spilanthes tetrandra Roxb.

Petrobium is a genus in the family Asteraceae.[6][7]

The only known species is Petrobium arboreum, called Saint Helena whitewood. It is found in the tree-fern thicket at the top of the central ridge of island of Saint Helena in the South Atlantic Ocean. The plants are either female or hermaphrodite, i.e. the species is gynodioecious.[8]

See also

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References

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  1. ^ 1875 illustration from page 399 of St. Helena: a physical, historical, and topographical description of the island ... The botanical plates from original drawings by Mrs. J. C. Melliss, by Melliss, John Charles. Original held and digitised by the British Library
  2. ^ Lambdon, P.W.; Ellick, S. (2016). "Petrobium arboreum". IUCN Red List of Threatened Species. 2016 e.T37597A67371334. doi:10.2305/IUCN.UK.2016-1.RLTS.T37597A67371334.en. Retrieved 18 November 2021.
  3. ^ Tropicos, search for Petrobium
  4. ^ "Petrobium R.Br". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 8 June 2026.
  5. ^ "Petrobium arboreum (J.R.Forst. & G.Forst.) R.Br. ex Spreng". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 8 June 2026.
  6. ^ Brown, Robert. 1818. Transactions of the Linnean Society of London 12(1): 113-114 description in Latin, commentary in English
  7. ^ Tropicos, Petrobium R. Br.
  8. ^ Flann, C (ed) 2009+ Global Compositae Checklist Deprecated link archived 2014-12-29 at archive.today
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