C. bigelovii may refer to:
Chromolaena bigelovii, Bigelow's false thoroughwort, a flowering plant species Coreopsis bigelovii, the Bigelow coreopsis, a flowering plant species Crossosoma bigelovii, the ragged rockflower, a flowering plant species Cylindropuntia bigelovii, the teddy bear cholla, a cactus species
Synonyms Cirsium bigelovii, a synonym of Cirsium muticum, a flowering plant species