Compositae Working Group (CWG) (2025). Global Compositae Database. Phalacromesus Cass.. Accessed at: https://compositae.org/gcd/aphia.php?p=taxdetails&id=1077598 on 2025-04-28
Contributed data: Notes Data only shown for fields conflicting with the consensus taxon record Notes from Flann et al. 2010 Taxon 59: Type - Conyza riparia Kunth [= Tessaria integrifolia Ruiz & Pav. Notes: The alternative name Monophalacrus Cass., published in the same place, was abandoned by Cassini in his later articles, in which he accepted Phalacromesus alone. The protologue just fulfils minimum standards for valid publication. The diagnosis is rudimentary (‘fleur centrale privée d’aigrette’), conditional mood is used in conjunction with doubt as to rank (‘pourrait constituer un nouveau genre ou sous-genre’), and only the final phrase clarifies that Cassini does accept the genus as such (‘ce genre, que nous hazardons de proposer’). The combination ‘P. riparius’ was not published by Cassini. [Flann et al. 2010 Cassini Genera] Tessaria subgen. Monophalacrus Cass., Tessaria subgen. Phalacromesus Cass., Monophalacrus Cass., and Phalacromesus Cass. simultaneously proposed by Cassini as alternative names, each typified by Conyza riparia HBK. [Tropicos] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Dict. Sci. Nat. 53: 235 [Flann et al. 2010 Cassini Genera] Dictionnaire des Sciences Naturelles [Second edition] 53: [Tropicos] [details] LSID urn:lsid:compositae.org:names:27A6E23B-338B-4D73-9EBD-40FECD6FB2C2 [details] Taxonomy May 1828 [details]