| Physarum album |
| Nederlands | : | Knikkend kalkkopje |
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| Duin en Kruidberg, the Netherlands; 25 October 2015. | |
| Physarum braunianum |
| Nederlands | : | Bruin kalkkopje |
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| Amstelveen, the Netherlands; 7 - 8 November 2015. | |
| Identification courtesy of H. van Hooff on the basis of collected material. First observation in the Netherlands. |
| Physarum spec. |
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| Maarn, the Netherlands; 27 September 2015. | |