C. articulatus can refer to a few different species. The specific epithet articulatus means 'jointed' or 'articulated.'

• Celastrus articulatus, synonym for Celastrus orbiculatus, a plant in the family Celastraceae
• Ceocephalus articulatus [ceb; wikidata], a weevil in the family Brentidae
• Cereus articulatus [wikidata], a cactus in the family Cactaceae
• Chiton articulatus [ceb; commons; es; nl; sv; war; wikidata], a mollusk in the family Chitonidae
• Chlorocyperus articulatus, synonym for Cyperus articulatus, a sedge in the family Cyperaceae
• Chondrophycus articulatus [species; wikidata], a seaweed in the family Rhodomelaceae
• Coleus articulatus [wikidata], a plant in the family Lamiaceae
• Conus articulatus, synonym for Conasprella articulata, a sea snail in the family Conidae
• Corynephorus articulatus [wikidata], a grass in the family Poaceae
• Crotalocephalus articulatus, a species of Crotalocephalus trilobite
• Curio articulatus, a plant in the family Asteraceae
• Cyclosorus articulatus [vi; wikidata], a fern in the family Thelypteridaceae
• Cyperus articulatus, a sedge in the family Cyperaceae