Speta, F. 1980: Die Gattungen Chaenorhinum (DC.) Reichenb. und Microrrhinum (Endl.) Fourr. im östlichen Teil ihrer Areale (Balkan bis Indien). – Stapfia 7: 1-72Sutton, D. A. 1988: A revision of the tribe AntirrhineaeZare, G., Özüdoğru, B., Ergan, G. & Tavşanoğlu, Ç. 2018: Taxonomic notes on the genus Chaenorhinum (Plantaginaceae) in Turkey. – Acta Bot. Croat. 77: 209-213
but modified and in need for further testing in Cypriot material
1Calyx-lobes recurved in fruit; corolla white or cream tinged with brownish-lilac or red on tube and adaxial lip; ventral staminae 2.5-3.0 mm long; seeds with variously sized tubercles but not echinate
1'Calyx-lobes more or less appressed to capsule; corolla bluish-violet with yellow palate; ventral staminae 4.0 mm long; seeds clearly echinate