Schemes including Pituophis catenifer sayi

• The Reptile Database (Pituophis_catenifer_sayi) Pituophis catenifer sayi
• NatureServe Explorer: An online encyclopedia of life. Version 7.1 (ELEMENT_GLOBAL.2.104296) Pituophis catenifer sayi
• GBIF (6162132) Pituophis catenifer sayi