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| Collotheca ornata var. ornata Ehrenberg, 1832 |
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| Collotheca ornata var. ornata, lateral view, (1). This species lacks the process on the dorsal lobe that is characteristic for Collotheca ornata var. cornuta |
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| Location: Hollum, Ameland pond (1); |
| habitat: water plants (Potamogeton sp.) (1), together with C. campanulata |
| Date: 10.10.2015 |
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