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Tetramerium nervosum (7554591904).jpg
Tetramerium nervosum
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Acanthaceae
Genus: Tetramerium
Nees, 1846

See text

Tetramerium is a genus of plants belonging to the family Acanthaceae. It is found mainly in the Americas,[1] especially in tropical dry forests.[2] Christian Gottfried Daniel Nees von Esenbeck first described the genus in 1846 after collecting two species (T. polystachyum and T. nervosum) on the journey of the HMS Sulphur.[2][3]


There are approximately 60 species in the genus :


  1. ^ Daniel, T. F., McDade, L. A., Manktelow, M., & Kiel, C. A. (2008). "The "Tetramerium Lineage" (Acanthaceae: Acanthoideae: Justicieae): Delimitation and intra-lineage relationships based on cp and nrlTS sequence data" (PDF). Systematic Botany. 33 (2): 416–436. doi:10.1600/036364408784571581. 
  2. ^ a b Daniel, T. F. (1986). "Systematics of Tetramerium (Acanthaceae)". Systematic Botany Monographs: 1–134. 
  3. ^ Nees von Esenbeck; C. G. (1846). "Acanthaceae". In G. Bentham. The botany of the voyage of H.M.S. Sulphur. London: Smith, Elder and Co. pp. 145–149. 

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