Lee Kong Chian Natural History Museum

Stigonema sp. Agardh, 1824

Kingdom:Protista
Phylum/Division:Cyanophyta
Class:Cyanophyceae
Order:Nostocales
Family:Stigonemataceae
Genus:Stigonema

Description

The branching trichomes of Stigomena have a main axis that are partly or wholly multiseriats. Branches arise from all sides of the main axis and may be repeatedly branched. Or branches may be borne unilaterally and unbranched. The sheath is always distinct, with a smooth or rough texture, homogeneous or lamellated, and hyaline or coloured yellow-brown, brown or black. The cells are spherical, although in young filaments they may be flattened. Heterocysts exist along the main axis or along branches.

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

Locality Map

General Biology

Stigonema grows on damp to wet rocks, walls and cliff surfaces. It is also found growing on moist earth as well as floating clumps mixed with other algae.

References

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

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