Chlamys hastata, the spear scallop or spiny scallop, a bivalve species
Prosthechea hastata (Lindl.) W.E.Higgins (1997 publ. 1998), an orchid species in the genus Prosthechea
Verbena hastata, the blue vervain or swamp verbena, a flowering plant species
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Viola hastata, the halberd-leaf yellow violet, a flowering plant species in the genus Viola