Thomandersia

{{Short description|Genus of flowering plants}}

{{automatic taxobox

|image = Thomandersia hensii 239825634 (cropped).jpg

|image_caption = Thomandersia hensii

|parent_authority = Sreem.

|taxon = Thomandersia

|authority = Baill.

|subdivision_ranks = Species

|subdivision = See text

|synonyms_ref =

|synonyms =

Scytanthus T. Anderson ex Benth. & Hook.f., illeg. homonym, 1876

;not Hook. 1844, Apocynaceae

;nor Liebm. 1847, Rafflesiaceae[http://www.tropicos.org/NameSearch.aspx?name=Scytanthus&commonname= Tropicos, search for Scytanthus]

}}

Thomandersia is the sole genus in the Thomandersiaceae, an African family of flowering plants. Thomandersia is a genus of shrubs and small trees, with six species native to Central and West Africa.

Thomandersia traditionally has been classified within the family Acanthaceae based on morphology by several authors, including APG I 1998, APG II 2003, and in Schlegeliaceae at APG Website Missouri Botanical Garden, in a list of genera of this family, but Stevens argues further that should be considered out of this taxon by weak support and regarded Thomandersiaceae.{{cite web|url=http://www.mobot.org/MOBOT/research/APweb/welcome.html |title= Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website Version 7, May 2006|publisher= Missouri Botanical Garden|accessdate=2007-08-09}}

The genus was elevated to family status, previously by Sreemadhavan 1976 Sreemadhavan, C. P. (1976). Leaf architecture and systematics of Acanthaceae and related families. Ph.D. thesis. Tampa, FL:University of South Florida. and 1977 Sreemadhavan, C. P. (1977). Diagnosis of some new taxa and some new combinations in Bignoniales. Phytologia 37: 413–416. on the basis of leaf anatomy and anther morphology, and more recently by Wortley et al. 2005 Wortley, A.H., Rudall, P. J., & Scotland, R.W. (2005). How much data are needed to resolve a difficult phylogeny? Case study in Lamiales. Systematic Biology 54: 697–709. and 2007,{{cite journal| last1 = Wortley, A.H.| first1 = Harris, D.J. & Scotland, R.W. | title = On the Taxonomy and Phylogenetic Position of Thomandersia.| journal = Systematic Botany | volume = 32| issue = 2| year = 2007| pages = 415–444| doi=10.1600/036364407781179716| last2 = Harris| first2 = D. J.| last3 = Scotland| first3 = R. W.| s2cid = 85726050 }} based on phylogenetic analyses of genetic material.

The genus was described with this name in 1892 by French botanist Henri Ernest Baillon.[https://www.biodiversitylibrary.org/page/28547707#page/459/mode/1up Baillon, Henri Ernest. 1892. Histoire des Plantes 10: 456] in Latin[http://www.tropicos.org/Name/40013494 Tropicos, Thomandersia Baill.]