| Catalogue of Diatom Names, On-Line Version, Updated 19 Sep 2011 |
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| Actinocyclus umbonatus Castracane 1886, p. 145; pl. 4, fig. 4 | |||
| Status | Valid | ||
| Published in | Castracane, F. 1886 [ref. 000193]. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873-76. Botany - Vol. II. Her Majesty's Stationery Office, London. 178 pp., 30 pls. | ||
| Type | Click here to view INA card. Click here to check this name in the INA website. | ||
| Type Locality | Language of description | L | |
| Collector | Assessment of record accuracy | likely accurate | |