Crystalline resorcinol has been well-studied due to being an early example of polymorphism and one of the simplest examples of conformational polymorphism. The α form is stable at low temperature and consists of molecules in an anti-anti conformation whereas the β form is stable at high temperature with the molecules adopting an anti-syn conformation. A third form, ε, has been reported, grown concommittant with β and with a similar conformation, but has been unable to be reproduced. The α and β forms both have a single molecule in the asymmetric unit (i.e. Z' = 1) and good matches are found by the Z' = 1 CSP search. The ε form, being Z' = 2, is not included in the landscape, which was restricted to Z' = 1.