Petrobium

Petrobium is a genus in the family Asteraceae.^[5][6]

Petrobium
Petrobium arboreum[1]
Conservation status
Endangered  (IUCN 3.1)[2]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
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]
Laxmannia J.R.Forst. & G.Forst.1775, rejected name, not R.Br. 1810 (Asparagaceae) nor Schreb. 1791 (Rutaceae) nor S.G.Gmel. ex Trin. 1818 (Rubiaceae) Drimyphyllum Burch. ex DC. [haretranthus Klatt [haretranthus ferrugineus Klatt [axmannia arborea J.R.Forst. & G.Forst. Drimyphyllum helenianum Burch. ex DC.

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.^[4]

See also

• Flora of St Helena