tropical regions of Africa, America, Asia and Australia
information not available
Small to medium herb; emersed and submersed forms often differ morphologically. Stems erect or decumbent, branched or not; vegetative and reproductive parts glabrous to glandular-hairy. Leaves usually opposite but uppermost leaves sometimes alternate, intergrading with bracts; sessile or petiolate; leaf blade variable within a single plant: typically elliptic, ovate, or lanceolate, and may be greatly dissected in submersed forms. Inflorescence an axillary or terminal raceme or spike; bracts leaf-like; bracteolate. Flowers bisexual, zygomorphic; calyx lobes 5, equal or unequal; corolla tube 2-lipped, 5-lobed, subequal, widening at throat; stigmas typically with 2 equal or unequal lobes; white to purple.
shaded and wet habitats, creeks, river banks, and drier parts of floodplains
Staurogyne contains 50 species. The commonly cultivated aquarium species are mainly native to Brazil. The identity of many species in the trade is uncertain and species names applied with caution. Staurogyne sp. 'Bihar' is a variable species for which the species name is not known.