| Catalogue of Diatom Names, On-Line Version, Updated 19 Sep 2011 |
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| Planothidium calcar (Cleve) Round et Bukhtiyarova 1996, p. 353 | |||
| Basionym | Eucocconeis calcar Cleve | ||
| Published in | Round, F.E. and Bukhtiyarova, L. 1996 [ref. 006778]. Four new genera based on Achnanthes (Achnanthidium) together with a re-definition of Achnanthidium. Diatom Research 11(2):345-361. | ||
| Type | Click here to view INA card. Click here to check this name in the INA website. | ||
| Collector | Assessment of record accuracy | uncertain/not verified | |