| Netrium interruptum: spindle-shaped cells with 2, in crossection star-shaped, chloroplasts. Netrium digitus features apical vacuoles with a single barium sulphate (BaSO4)-crystal. The chloroplasts in this species are subdivided giving the impression of 4 chloroplasts per cell. (2) |
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| Netrium interruptum: same specimen; focal plane on the ridges of the chloroplasts. (2) |
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| Netrium interruptum: specimen from (1) |
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| Netrium interruptum: focal plane on the periphery of the star-shaped chloroplasts. (1) |
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| Location: Wahner Heide /Cologne, puddle (1); Speikboden, Ahrntal, Italy, pond (2) |
| Habitat: sediment (1); periphyton (2) |
| Date: 18.7.2009 (1); 07.10.2014 |
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