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Genus of flowering plants From Wikipedia, the free encyclopedia
Petrobium is a genus in the family Asteraceae.[5][6]
| Petrobium | |
|---|---|
_p399_-_PLATE_42_-_Pretobium_Arboreum.jpg) | |
| Petrobium arboreum[1] | |
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] | |
| |
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]
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