| Botrydiopsis arrhiza; spherical cell with many plastids; near a diatom ??Melosira sp??? |
| |
 |
| Botrydiopsis arrhiza; older cells (about 60µm diameter) have many plastids. |
| |
 |
| Botrydiopsis arrhiza; younger and smaller cells with two plastids. |
| |
 |
| Botrydiopsis arrhiza; aggregation of cells forming a neuston layer on a pond (see below). |
| |
|
|
|
|
Location: Hattingen Felderbachtal, Haselbecke, pond (click to enlarge) |
 |
| |
| Habitat: neuston |
| |
| Date: 20.04.2020 |
| |
|
|
|
|
|
| |
| |
| |
|
| |
|
|
| |
