''Hydrothauma'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

n plants in the

grass family Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns and ...

. The only known species is ''Hydrothauma manicatum'', native to Zaïre and Zambia.The Plant List, ''Hydrothauma manicatum'' C.E.Hubb.
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References

Panicoideae Grasses of Africa Monotypic Poaceae genera Taxa named by Charles Edward Hubbard {{Panicoideae-stub