''Hypericum revolutum'' is a shrub or small tree in the genus ''

Hypericum ''Hypericum'' is a genus of flowering plants in the family (biology), family Hypericaceae (formerly considered a subfamily of Clusiaceae). The genus has a nearly worldwide distribution, missing only from tropical lowlands, deserts and polar re ...

'' native to

Arabia The Arabian Peninsula (, , or , , ) or Arabia, is a peninsula in West Asia, situated north-east of Africa on the Arabian plate. At , comparable in size to India, the Arabian Peninsula is the largest peninsula in the world. Geographically, the ...

and

Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...

. It is evergreen, with leaves opposite, closely spaced and crowded at the ends of branches, c. 20 × 5 mm, green to slightly glaucous, sessile, clasping at the base. Single bright yellow flowers form at the ends of branches, up to 5 cm in diameter, blooming from June to November. Fruit is a reddish-brown capsule, up to 13 × 10 mm. ''Hypericum revolutum'' is characteristic of the

Afromontane The Afromontane regions are subregions of the Afrotropical realm, one of the Earth's eight biogeographic realms, covering the plant and animal species found in the mountains of Africa and the southern Arabian Peninsula. The Afromontane regions o ...

vegetation, found from 1400 – 2593 meters elevation, and ranging from southwest Arabia through the Afromontane zones of eastern Africa to the Cape; it is also found in the

Cameroon Highlands The Western High Plateau, Western Highlands or Bamenda Grassfields is a region of Cameroon characterised by high relief, cool temperatures, heavy rainfall and savanna vegetation. The region lies along the Cameroon line and consists of mounta ...

and

Bioko Bioko (; ; ; historically known as Fernando Pó, ) is an island of Equatorial Guinea. It is located south of the coast of Cameroon, and northwest of the northernmost part of mainland Equatorial Guinea. Malabo, on the north coast of the is ...

, and on

Madagascar Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...

, the

Comoro Islands The Comoro Islands are a group of volcanic islands in the Mozambique Channel, an arm of the Indian Ocean lying between Madagascar and the African mainland. Three of the islands form the Union of the Comoros, a sovereign nation, while Mayotte bel ...

, and

Réunion Réunion (; ; ; known as before 1848) is an island in the Indian Ocean that is an overseas departments and regions of France, overseas department and region of France. Part of the Mascarene Islands, it is located approximately east of the isl ...

. It grows along streams in

montane grassland Montane grasslands and shrublands are a biome defined by the World Wildlife Fund. The biome includes high elevation grasslands and shrublands around the world. The term "montane" in the name of the biome refers to "high elevation", rather than t ...

and forest fringes.

References

Flora of Zimbabwe: Species information: ''Hypericum revolutum''

External links

* Afromontane flora revolutum Taxa named by Martin Vahl Flora of the Arabian Peninsula Flora of Africa Flora of Bioko Flora of Madagascar Flora of the Comoros Flora of Réunion {{Hypericum-stub