Tetramerium

Tetramerium is a genus of plants belonging to the family Acanthaceae. It is found in the Americas,^[2] ranging from the southwestern United States to Bolivia,^[1] especially in tropical dry forests.^[3] 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 HMS Sulphur.^[3][4]

Tetramerium
Tetramerium nervosum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Acanthaceae
Subfamily:	Acanthoideae
Tribe:	Justicieae
Genus:	Tetramerium Nees (1846)
Species[1]
30; see text
Synonyms[1]
Averia Leonard (1940)

Species

30 species are accepted.^[1]

• Tetramerium abditum (Brandegee) T.F.Daniel
• Tetramerium aureum Rose
• Tetramerium butterwickianum T.F.Daniel
• Tetramerium carranzae T.F.Daniel
• Tetramerium crenatum T.F.Daniel
• Tetramerium denudatum T.F.Daniel
• Tetramerium diffusum Rose
• Tetramerium emilyanum T.F.Daniel
• Tetramerium fruticosum Brandegee
• Tetramerium glandulosum Oerst.
• Tetramerium glutinosum Lindau ex Loes.
• Tetramerium guerrerense T.F.Daniel
• Tetramerium langlassei Hopp
• Tetramerium mcvaughii T.F.Daniel
• Tetramerium nemorum Brandegee
• Tetramerium nervosum Nees – hairy fornwort - cultivated for xeriscapes
• Tetramerium oaxacanum T.F.Daniel
• Tetramerium obovatum T.F.Daniel
• Tetramerium ochoterenae (Miranda) T.F.Daniel
• Tetramerium peruvianum (Lindau) T.F.Daniel
• Tetramerium rubrum Hopp
• Tetramerium rzedowskii T.F.Daniel
• Tetramerium sagasteguianum T.F.Daniel
• Tetramerium surcubambense T.F.Daniel
• Tetramerium tenuissimum Rose
• Tetramerium tetramerioides (Lindau) T.F.Daniel
• Tetramerium vargasiae T.F.Daniel & Cruz Durán
• Tetramerium wasshausenii T.F.Daniel
• Tetramerium yaquianum T.F.Daniel
• Tetramerium zeta T.F.Daniel