Microcystis sp.
Key to families
- Cells arranged irregularly or in three-dimensional perpendicular rows in mucilaginous colonies, with or without individual gelatinous envelopes. Cells spherical, after division hemispherical, with or without aerotopes, cell division regularly in three planes perpendicular to one another in successive generations ... Microcystaceae (Genera included in this volume: Eucapsis, Gloeocapsa, Microcystis)
Key to genera
1. Cells without individual gelatinous envelopes, distributed within common colourless unstructured mucilage..........2
- Cells or groups of cells within distinct individual gelatinous envelopes.....................................................Gloeocapsa
2. Cells irregularly arranged in spherical to formless colonies; with aerotopes...............................................Microcystis
- Cells arranged regularly in three-dimensionally perpendicular rows forming cubic colonies; without aerotopes....................Eucapsis
Key to species
1. Cells 2.5–3.0 μm in diameter ...............................................................................................................M. ichthyoblabe
- Cells > 3 μm in diameter..............................................................................................................................................2
2. Colonies with cells loosely arranged cells....................................................................................................................3
- Colonies with more or less irregularly and densely arranged cells .............................................................................4
3. Colonies irregular, enveloped by very fine, hyaline mucilage, cells sparsely arranged (3.0–) 3.5–6.5 μm in diameter.........................M. protocystis
- Colonies intensely lobate and perforate, enveloped by distinctly delimited mucilage, cells 4.0–7.5 μm in diameter........................... M. wesenbergii
4. Colonies enveloped by mucilage generally exceeding the outline of cells .................................................................5
- Colonies enveloped by a diffluent mucilage, not exceeding the outline of cells; cells 3.5–4.8 (–5.6) μm in diameter..............................M. flos-aquae
5. Colonies irregularly lobate, clathrate, or composed of sub-colonies............................................................................6
- Colonies in the shape of a thickened disc or forming a thin often folded film; cells 3–5 μm in diameter..................................................M. panniformis
6. Mucilaginous margin wide, distinct, with radial, hyaline gelatinous protruberances; cells (5–) 6–7 μm in diameter.............................M. botrys
- Mucilaginous margin wide, diffluent; cells 4–7 μm in diameter............................................................ M. aeruginosa
Project
Project
Project
Project
Project
Project
Project
Project
Project
Project
Project
Project
