University Herbarium, UC Berkeley: Indian Ocean Catalogue

IOC entry for Ceramium pedicellatum

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EXCLUDED RECORD

Ceramium pedicellatum C. Agardh, nom. illeg.

Ceramium pedicellatum C. Agardh, 1817: XXVII; 1824: 137, nom. illeg. (type locality: Bantry Bay, Ireland).—J. Murray, 1881: 6.

Note: It is not possible to determine what Murray had in hand when he reported Ceramium pedicellatum from Pakistan, especially in view of the complexities involving this name. Conferva pedicellata J.E. Smith (1808 [1790–1814]: pl. 1817; type locality: Brighthelmston, Sussex, England) is currently recognized in the North Atlantic flora as Monosporus pedicellatus (J.E. Smith) Solier (see Maggs & Hommersand, 1993: 190). A specimen from Bantry Bay, Ireland, was sent by Ellen Hutchins to Dillwyn, who referred it to C. pedicellata and published the illustration made by Hutchins as pl. 108 in his British Confervae (1809). In transferring C. pedicellata to Ceramium, C. Agardh (1817: XXVI) cited Dillwyn rather than J.E. Smith and later (1824: 137) made it clear that he was excluding the type of Smith's name, which he listed as being applicable to a species inquirenda (1824: 143). Thus, C. Agardh must be considered as having proposed a new name directly attributable to him (see Art. 48.1). The name, however, is illegitimate, being a later homonym of Ceramium pedicellatum DeCandolle (in Lamarck & DeCandolle, 1805: 43; type locality: France), which was referred to the Ceramium rubrum complex by J. Agardh (1851 [1851–1863]: 128).

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