
Mesembryanthemum (meaning `midday flowering`) is a genus of flowering plants native to southern Africa. Many species formerly placed herein, such as Dorotheanthus bellidiformis, Carpobrotus and Sceletium have since been moved into other genera. Fig marigold or Icicle plant is a name for any of several South African taxa of Mesembryanthemum which.....
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http://en.wikipedia.org/wiki/Mesembryanthemum

• (n.) A genus of herbaceous or suffruticose plants, chiefly natives of South Africa. The leaves are opposite, thick, and f/eshy. The flowers usually open about midday, whence the name.
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http://thinkexist.com/dictionary/meaning/mesembryanthemum/
Me·sem`bry·an'the·mum noun [ New Latin , from Greek
meshmbri`a midday +
'a`nqos flower.]
(Botany) A genus of herbaceous or suffruticose plants, chiefly natives of South Africa. The leaves are opposite, thick, and f...eshy. The flowers usually open about midday, when...
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http://www.encyclo.co.uk/webster/M/51

Mesembryanthemum is a genus of fleshy, herbaceous plants belonging to the family Ficoidaceae. They bear conspicuous flowers and thick, fleshy leaves. Most of the species are native of South Africa.
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http://www.probertencyclopaedia.com/browse/BM.HTM

[
n] - South African annual or biennial plants having flowers that open only in bright sunlight
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http://www.webdictionary.co.uk/definition.php?query=Mesembryanthemum
genus Mesembryanthemum noun South African annual or biennial plants having flowers that open only in bright sunlight
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https://www.encyclo.co.uk/local/20974
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