C. clavata may refer to: Coilostylis clavata, an orchid species Cellypha clavata, a fungus species in the genus Cellypha Commelina clavata, a flowering plant species in the genus Commelina Clavus clavata, a sea snail species Curvularia clavata, a mold species in the genus Curvularia Cunninghamella clavata, a soil fungus species