Scenedesmus verrucosus (Roll, 1925)

Most likely ID: n.a.

 

Synonyms: Scenedesmus bijugatus v. granulatus, Scenedemus f. verrucosa, Scenedesmus ecornis v. granulatus, Scenedemus granulatus f. disciformis, Chlorella ultrasquamata

 

Sampling location: Simmelried

 

Phylogenetic tree: Scenedesmus verrucosus

 

Diagnosis: 

  • colonies 4-8 cells, in two rows
  • no gaps between single cells
  • single cells 5.4 – 14.4 µm long, 2-7 µm wide
  • surface finely granulated
  • one pyrenoid per cell
Scenedesmus-verrucosus
Scenedesmus verrucosus

Probably cosmopolitan distribution. The cenobia of this species often disintegrate into single cells, which is why it has been described as Chlorella (see synonyms). The pyrenoid is sometimes indistinctly visible.

Scenedesmus-verrucosus

Fig. 1: Scenedesmus verrucosus. Two focal planes of an 8 cell colony. PY = pyrenoid. Obj. 100 X.