dcsimg

Description

provided by Flora of Zimbabwe
Trees, shrubs or lianes. Stipules present or 0. Leaves opposite, less often in whorls of 3, simple. Inflorescence thyrsoid, cymose or 1-flowered. Flowers mostly actinomorphic, less often zygomorphic, usually bisexual, 4- or 5-merous (in ours). Sepals free or united. Corolla lobes partly united. Ovary superior or slightly inferior, (1-)2(-4)-locular. Fruit a berry, 1-many-seeded.
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Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Loganiaceae Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/family.php?family_id=123
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Mark Hyde
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Bart Wursten
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Petra Ballings
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Flora of Zimbabwe

Loganiaceae

provided by wikipedia EN

The Loganiaceae are a family of flowering plants classified in order Gentianales. The family includes up to 13 genera, distributed around the world's tropics. There are not any great morphological characteristics to distinguish these taxa from others in the order Gentianales.

Many members of the Loganiaceae are extremely poisonous, causing death by convulsion. Poisonous properties are largely due to alkaloids such as those found in Strychnos. Glycosides are also present as loganin in Strychnos.[2]

Earlier treatments of the family have included up to 29 genera. Phylogenetic studies have demonstrated that this broadly defined Loganiaceae was a polyphyletic assemblage, and numerous genera have been removed from Loganiaceae to other families (sometimes in other orders), e.g., Gentianaceae, Gelsemiaceae, Plocospermataceae, Tetrachondraceae, Buddlejaceae, and Gesneriaceae. Some classification schemes, notably Takhtajan's, break the remaining Loganiaceae even further, into as many as four families; Strychnaceae, Antoniaceae, Spigeliaceae and Loganiaceae.

Genera

Some sources indicate the family consists of 13 genera.[3][4] A more recent study considers some Labordia species synonymous with Geniostoma,[5] resulting in 12 genera in other sources.[6]

Excluded genera

References

  1. ^ a b "Family: Loganiaceae R. Br. ex Mart., nom. cons". Germplasm Resources Information Network. United States Department of Agriculture. 2003-01-17. Archived from the original on 2012-10-10. Retrieved 2010-12-15.
  2. ^ Flowering Plants of the World by consultant editor Vernon H. Heywood, 1978, Oxford University Press, Walton Street, Oxford OX2 6DP, England, ISBN 019217674-9
  3. ^ a b c d Backlund, Maria; Oxelman, Bengt; Bremer, Birgitta (July 2000). "Phylogenetic relationships within the Gentianales based on NDHF and RBCL sequences, with particular reference to the Loganiaceae". American Journal of Botany. 87 (7): 1029–1043. doi:10.2307/2657003. JSTOR 2657003. Retrieved 2017-03-19.
  4. ^ "GRIN Genera Records of Loganiaceae". Germplasm Resources Information Network. United States Department of Agriculture. Archived from the original on 2004-11-18. Retrieved 2010-12-15.
  5. ^ Gibbons, Kerry L.; Henwood, Murray J.; Conn, Barry J. (2012). "Phylogenetic relationships in Loganieae (Loganiaceae) inferred from nuclear ribosomal and chloroplast DNA sequence data". Australian Systematic Botany. 25 (5): 331–340. doi:10.1071/sb12002. Retrieved 2017-03-19.
  6. ^ Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III". Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x.
  7. ^ "GRIN genera sometimes placed in Loganiaceae". Germplasm Resources Information Network. United States Department of Agriculture. Archived from the original on 2004-11-18. Retrieved 2010-12-15.
  • Struwe, L., V. A. Albert, and B. Bremer (1994). "Cladistics and family level classification of the Gentianales". Cladistics 10: 175–205.

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Loganiaceae: Brief Summary

provided by wikipedia EN

The Loganiaceae are a family of flowering plants classified in order Gentianales. The family includes up to 13 genera, distributed around the world's tropics. There are not any great morphological characteristics to distinguish these taxa from others in the order Gentianales.

Many members of the Loganiaceae are extremely poisonous, causing death by convulsion. Poisonous properties are largely due to alkaloids such as those found in Strychnos. Glycosides are also present as loganin in Strychnos.

Earlier treatments of the family have included up to 29 genera. Phylogenetic studies have demonstrated that this broadly defined Loganiaceae was a polyphyletic assemblage, and numerous genera have been removed from Loganiaceae to other families (sometimes in other orders), e.g., Gentianaceae, Gelsemiaceae, Plocospermataceae, Tetrachondraceae, Buddlejaceae, and Gesneriaceae. Some classification schemes, notably Takhtajan's, break the remaining Loganiaceae even further, into as many as four families; Strychnaceae, Antoniaceae, Spigeliaceae and Loganiaceae.

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cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
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wikipedia EN