Rhagadiolus Vaill.

Rhagadiolus is a genus of two closely related weedy species, both native to the Mediterranean region. According to recent molecular studies Rhagadiolus is most closely related to Lapsana and both genera cluster within the genus Crepis s.l. However, their generic status is best maintained, at least for the time being (Enke 2009).

One species, Rhagadiolus stellatus, was formerly recorded as an alien in Belgium.


Brummitt R.K. (1982) Report of the Committee for Spermatophyta: 24. Proposal 516. 9566 Rhagadiolus Juss. (1789) (Compositae) vs. Rhagadiolus Zinn (1757). Taxon 31(3): 544.

Enke N. (2008) Phylogeny and Character Evolution in the Genus Crepis L. (Cichorieae, Compositae). PhD thesis Universität Berlin-Dahlem: 137 p. [available online at: http://www.diss.fu-berlin.de/diss/receive/FUDISS_thesis_000000009361]  

Enke N. (2009) Contributions towards a revised infrageneric classification of Crepis (Cichorieae, Compositae). Willdenowia 39(2): 229-245. [available online at: http://www.bioone.org/doi/pdf/10.3372/wi.39.39202]

Enke N. & Gemeinholzer B. (2008) Babcock revisited: new insights into generic delimitation and character evolution in Crepis L. (Compositae: Cichorieae) from ITS and matK sequence data. Taxon 57(3): 756-768. [available online at: https://www.researchgate.net/publication/233580144_Babcock_revisited_new_insights_into_generic_delimitation_and_character_evolution_in_Crepis_L._%28Compositae_Cichorieae%29_from_ITS_and_matK_sequence_data]

Meikle R.D. (1979) Rhagadiolus: a misunderstood genus. Taxon 28: 133-141.

Meikle R.D. (1980) (516) Proposal to conserve 9566 Rhagadiolus Juss. over Rhagadiolus Zinn (Compositae). Taxon 29(1): 159-160.

Shaw J.M.H. (1999) Rhagadiolus edulis in Mallorca ... and Britain? BSBI News 80: 48-49. [available online at: http://archive.bsbi.org.uk/BSBINews80.pdf]

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith