A PHP Error was encountered

Severity: Notice

Message: Only variables should be assigned by reference

Filename: core/Controller.php

Line Number: 51

A PHP Error was encountered

Severity: Warning

Message: "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"?

Filename: Query/Tokenizer.php

Line Number: 96

Scytonema .sp
Lee Kong Chian Natural History Museum

Scytonema sp. (Agardh) ex Bornet & Flahault, 1887



The trichome consists of cylindrical cells and is of uniform diameter throughout. The sheath is of firm texture and may be coloured. At some points along the trichome it may break and the ensuing two ends grow out of the sheath as separate filaments. This gives the appearance of branching. Heterocysts may develop singly or in twos or threes. They are of the same size as vegetative cells. Akinetes are rare.

Read more about the Nostocales order.
Read more about the Scytonemataceae family.

Locality Map

General Biology

Scytonema is found in subaerial habitats with the filaments interwoven into dark mats due to the mucilaginous matric absorbing dust blown off the surroundings.

Life Cycle

Through "false branching" the filaments fragment.

Ecological Role

Growth results in untidy stains on walls of buildings.


Bold, H. C., C. J. Alexopoulos & T. Delevoryas, 1987. Morphology of plants and fungi. Harper & Row, New York. (5th ed.). 912pp.

Related Images

Related People

Spot any errors? Have any questions? Something to contribute? Email us at dbsthh@nus.edu.sg!
Presented by

Sponsored by