C. hirta may refer to: Caladenia hirta, an orchid species in the genus Caladenia Calamidia hirta, a moth species found in Australia, from Queensland to Tasmania Calamagrostis hirta, a grass species found only in Ecuador Carex hirta, a sedge species in the genus Carex Cladophlebis hirta, an extinct fern species which grew during the Mesozoic and late Paleozoic eras Clidemia hirta, the soapbush or Koster's curse, a perennial shrub species invasive in many tropical regions of the world Crocidura hirta, the lesser red musk shrew, a mammal species found in Africa Cyrtophora hirta, a spider species in the genus Cyrtophora found in Queensland
See also Hirta (disambiguation)