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Hypericum perforatum


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photographer Sanja Galkovski.

Hypericum is a genus of about 400 species of flowering plants in the family Clusiaceae, formerly often treated separately in their own family the Hypericaceae. The genus has a nearly world-wide distribution, missing only from tropical lowlands, deserts and arctic regions.

The species vary from small annual or perennial herbaceous plants 5-10 cm tall, to shrubs and small trees up to 12 m tall. The leaves are opposite, simple oval, 1-8 cm long, either deciduous or evergreen. The flowers vary from pale to dark yellow, and from 0.5-6 cm diameter, with five (rarely four) petals. The fruit is usually a dry capsule which splits to release the numerous small seeds; in some species it is fleshy and berry-like.

All members of the genus may be referred to as "St. John's worts" or St.John's-worts, though they are also commonly just called Hypericums; other names include Rose of Sharon and Tutsan. Some species are used as ornamentals and have large, showy flowers.

Various Hypericum species are exclusively used as food plants by the larva of the Treble-bar, a species of moth. Other Lepidoptera species whose larvae sometimes feed on Hypericum include Common Emerald, The Engrailed, Grey Pug and Setaceous Hebrew Character.

Source: Wikipedia, http://en.wikipedia.org/wiki/Hypericum


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photographer: Sanja Galkovski | | country: Croatia | location: Island Cres | in gallery: Miscellaneous | categories: All, Landscape | currently browsing: sort by: publish order (desc), category: All
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