# Anisotes

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***Anisotes*** is a genus of [Afrotropical](/source/Afrotropical_realm) plants in the family [Acanthaceae](/source/Acanthaceae). The genus is morphologically similar to *[Metarungia](/source/Metarungia)*, from which it differs mainly in the dehiscence of the fruit capsule, and the nature of the placenta.[2] Placentas (with attached retinacula) remain attached to the inner surface of fruit capsules in *Anisotes*.[3]

They favour sandy ground or tropical to subtropical dry forest. The corolla consists of a two-lipped flower that is orange to red in colour. Four seeds are produced in a woody fruit capsule.[4] Two of the six [Madagascar](/source/Madagascar) species, *A. hygroscopicus* and *A. venosus*, are unique in the genus in having [hygroscopic](/source/Hygroscopy) [trichomes](/source/Trichome) on their seeds.[5]

## Species

As of December 2023, [Plants of the World Online](/source/Plants_of_the_World_Online) accepted the following species:[1]

- *[Anisotes bracteatus](/source/Anisotes_bracteatus)* Milne-Redh. – southern Africa
- *[Anisotes comorensis](/source/Anisotes_comorensis)* (Lindau) T.F.Daniel
- *[Anisotes divaricatus](/source/Anisotes_divaricatus)* T.F.Daniel, Mbola, Almeda & Phillipson – southwestern Madagascar
- *[Anisotes diversifolius](/source/Anisotes_diversifolius)* [Balf.f.](/source/Isaac_Bayley_Balfour)
- *[Anisotes dumosus](/source/Anisotes_dumosus)* Milne-Redh.
- *[Anisotes galanae](/source/Anisotes_galanae)* (Baden) [Vollesen](/source/Kaj_Borge_Vollesen)
- *[Anisotes guineensis](/source/Anisotes_guineensis)* Lindau
- *[Anisotes hygroscopicus](/source/Anisotes_hygroscopicus)* T.F.Daniel – Madagascar
- *[Anisotes involucratus](/source/Anisotes_involucratus)* Fiori
- *[Anisotes longistrobus](/source/Anisotes_longistrobus)* ([C.B.Clarke](/source/Charles_Baron_Clarke)) [Vollesen](/source/Kaj_Borge_Vollesen)
- *[Anisotes macrophyllus](/source/Anisotes_macrophyllus)* (Lindau) Heine
- *[Anisotes madagascariensis](/source/Anisotes_madagascariensis)* Benoist – southwestern Madagascar
- *[Anisotes mayottensis](/source/Anisotes_mayottensis)* T.F.Daniel
- *[Anisotes nyassae](/source/Anisotes_nyassae)* Baden
- *[Anisotes parvifolius](/source/Anisotes_parvifolius)* Oliv.
- *[Anisotes pubinervius](/source/Anisotes_pubinervius)* (T.Anderson) Heine
- *[Anisotes pulchellus](/source/Anisotes_pulchellus)* (Benoist) T.F.Daniel, Letsara & Rakotonas.
- *[Anisotes rogersii](/source/Anisotes_rogersii)* S.Moore – southern Africa
- *[Anisotes sessiliflorus](/source/Anisotes_sessiliflorus)* (T.Anderson) C.B.Clarke
- *[Anisotes spectabilis](/source/Anisotes_spectabilis)* ([Mildbr.](/source/Johannes_Mildbraed)) [Vollesen](/source/Kaj_Borge_Vollesen)
- *[Anisotes subcoriaceus](/source/Anisotes_subcoriaceus)* T.F.Daniel – Madagascar
- *[Anisotes tablensis](/source/Anisotes_tablensis)* T.F.Daniel
- *[Anisotes tanensis](/source/Anisotes_tanensis)* Baden
- *[Anisotes tangensis](/source/Anisotes_tangensis)* Baden
- *[Anisotes trisulcus](/source/Anisotes_trisulcus)* (Forssk.) Nees
- *[Anisotes ukambensis](/source/Anisotes_ukambensis)* Lindau
- *[Anisotes umbrosus](/source/Anisotes_umbrosus)* Milne-Redh.
- *[Anisotes venosus](/source/Anisotes_venosus)* T.F.Daniel – Madagascar
- *[Anisotes zenkeri](/source/Anisotes_zenkeri)* (Lindau) C.B.Clarke

## References

1. "*Anisotes*". 331350-2. Retrieved 22 December 2023.

1. Darbyshire, Iain; Vollesen, Kaj; Chapman, Hazel M. (23 January 2009). "A remarkable range disjunction recorded in Metarungia pubinervia (Acanthaceae)". *Kew Bulletin*. **63** (4): 613–615. [doi:10.1007/s12225-008-9073-3](https://doi.org/10.1007/s12225-008-9073-3). [S2CID 40176831](https://api.semanticscholar.org/CorpusID:40176831)

1. Daniel, Thomas F. et al. ["Anisotes (Acanthaceae) in Madagascar"](http://researcharchive.calacademy.org/research/curators/pdfs/anisotes_in_madagascar.pdf). California Academy of Sciences. Retrieved 22 July 2014.

1. Hyde, M. et al. ["Anisotes Nees"](http://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=1359). Flora of Zimbabwe. Retrieved 22 July 2014.

1. Daniel, Thomas F.; Letsara, Rokiman; Martín-Bravo, Santiago (18 October 2013). ["Four New Species of Anisotes (Acanthaceae) from Madagascar (Acanthaceae) from Madagascar"](https://zenodo.org/record/894494). *Novon: A Journal for Botanical Nomenclature*. **22** (4): 396–408. [doi:10.3417/2012054](https://doi.org/10.3417/2012054). [S2CID 86270678](https://api.semanticscholar.org/CorpusID:86270678)

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