Hypericum Decaisneanum
''Hypericum decaisneanum'' is a species of flowering plant in the Hypericum, St John's wort family Hypericaceae. Named for French botanist Joseph Decaisne, it is a small perennial herb that grows mostly upright. It has thick, papery leaves and up to twenty flowers with bright yellow Petal, petals. Endemism, Endemic to the Jabal al Akhdar, Jebel al Akhdar province of Libya, ''H. decaisneanum'' is found in the cracks of limestone rocks on steep Escarpment, escarpments. It is a member of numerous Plant community, plant communities and Association (ecology), associations of Chasmophyte, chasmophytes, of which it is sometimes a key species. First Species description, described in 1899, the species was originally placed in Hypericum sect. Taeniocarpium, section ''Taeniocarpium'' of the genus ''Hypericum'', but conflicting relationships have meant it has been treated more recently as a member of Hypericum sect. Adenosepalum, section ''Adenosepalum''. Etymology The genus name ''Hypericum ...
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Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants that produce their seeds enclosed within a fruit. They are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Angiosperms were formerly called Magnoliophyta (). Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds. The ancestors of flowering plants diverged from the common ancestor of all living gymnosperms before the end of the Carboniferous, over 300 million years ago. The closest fossil relatives of flowering plants are uncertain and contentious. The earliest angiosperm fossils ar ...
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