Loganiaceae

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.

Loganiaceae Temporal range: Early Miocene to Recent, 22–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Strychnos nux-vomica
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Gentianales
Family:	Loganiaceae R.Br. ex Mart.[1]
Genera
See text
Synonyms[1]
Antoniaceae Hutch. Geniostomataceae Struwe & V.A.Albert Spigeliaceae Bercht. & J.Presl Strychnaceae DC. ex Perleb

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] As of November 2023 Plants of the World Online accepts 16 genera:^[7]

Adelphacme K.L.Gibbons, B.J.Conn & Henwood Antonia Pohl Bonyunia R. H. Schomb. ex Progel Gardneria Wall. Geniostoma J. R. Forst. & G.Forst. (syn. Labordia Gaudich. ) Logania R.Br. Mitrasacme Labill. Mitreola L.

Neuburgia Blume Norrisia Gardner Orianthera C.S.P.Foster & B.J.Conn Phyllangium Dunlop Schizacme Dunlop Spigelia L. Strychnos L. Usteria Willd.

Excluded genera

Androya H.Perrier -> Scrophulariaceae Anthocleista[3] Afzel. ex R.Br. -> Gentianaceae Buddleja L. -> Scrophulariaceae Desfontainia Ruiz & Pav. -> Columelliaceae Emorya Torr. -> Scrophulariaceae Fagraea[3] Thunb. -> Gentianaceae Gelsemium Juss. -> Gelsemiaceae Gomphostigma Turcz. -> Scrophulariaceae

Mostuea Didr. -> Gelsemiaceae Nuxia Comm. ex Lam. -> Stilbaceae Peltanthera Benth. -> Gesneriaceae Plocosperma Benth. -> Plocospermataceae Polypremum L. -> Tetrachondraceae Potalia[3] Aubl. -> Gentianaceae Retzia Thunb. -> Stilbaceae[8]

References

1. "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. 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. PMID 10898781.
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. S2CID 85322573. 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. hdl:10654/18083.
7. Loganiaceae R.Br. ex Mart. Plants of the World Online. Accessed 17 November 2023.
8. "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.

External links

• Media related to Loganiaceae at Wikimedia Commons
• Data related to Loganiaceae at Wikispecies