Synonyms: Campanula falcata (homotypic); Campanula syriaca (heterotypic); Legousia castellana; Legousia castellana var. grandiflora; Legousia castellana var. longisepala; Legousia castellana var. maroccana; Legousia falcata castellana; Legousia falcata falcata; Legousia falcata var. scabra; Legousia scabra; Legousia scabra var. grandiflora; Legousia speculum-veneris var. maroccana; Pentagonia falcata (homotypic); Prismatocarpus falcatus (homotypic); Prismatocarpus scaber; Specularia castellana; Specularia castellana longilobata; Specularia castellana var. grandiflora; Specularia falcata (homotypic); Specularia falcata castellana; Specularia falcata f. scabra; Specularia falcata var. pusilla; Specularia falcata var. scabra; Specularia speculum castellana; Triodanis falcata (homotypic)