| Catalogue of Diatom Names, On-Line Version, Updated 19 Sep 2011 |
| About the On-line Catalogue | Introduction & Acknowledgements | Search the On-line Catalogue | Instructions on Searching for Species | Instructions on Searching for Genera | Instructions on Searching for Publications | Citing the Catalogue of Diatom Names | Contact Us |
| Raphidodiscus H.L. Smith ex T. Christian 1887, pg. 68 | |
| Generitype | LT: Rhaphidodiscus christianii Christian |
| Designated by | Vorce (001912), p. 132-137 |
| Year Designated | 1889 |
| Nomenclatural status | valid |
| Recent revisions | Andrews 1974 (ref. 003357) |
| Comments | Lectotypification by monotypification (by synonymy of the three original species) Comments: Although Christian provided the original description and illustration, and the name was not ascribed to Smith in the original publication, the authorship is cited as “Smith ex Christian” because H.L Smith provided Christian with a name for the genus. The name is first introduced p. 67, the genus is described p. 68, and specimens are illustrated p. 66, 67, 68. Three species are originally included: R. marylandica, R. christianii and R. febigeri, and no type is designated. See genera Humbugodiscus Deby 1890 and Melonavicula Christian 1886 (invalid synonyms of Rhaphidodiscus Christian 1887). Vorce 1889 (ref. 001912), p. 136, redescribed the genus. He showed that "Marylandica is Christianii lodged in a Melosira" and that "Febigeri [is..] Christianii with its rim broken all around the valve". Vorce argued that the three described species must be reduced to a single species, R. Christianii. Hanna (1932), p. 208 (ref. 000014), also considered the three original species to be synonymous but chose R. marylandicus to represent the species. R. marylandicus is the only one of these 3 names to be of current usage. |
| Published in |
Christian, T. 1887 (ref. 217) New Diatomaceous deposits The Microscope, Vol:7[3], 65-68 |