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Figure 1
(a) A graphical breakdown of the entries flagged as polymorphs in the CSD. Panels (b) and (c) show further breakdown of the crystal types (anhydrate, non-hydrated solvate, salt, hydrate and cocrystal) for (b) polymorphs that can coexist and (c) polymorphs with known phase transitions.

IUCrJ
Volume 5| Part 2| March 2018| Pages 124-129
ISSN: 2052-2525
https://doi.org/10.1107/S2052252518000660