Micrasterias anomala

This is a very anomalous and extraordinary plant of which there are several varieties.

It has similarities with Xanthidium armatum and Micrasterias americana.


Micrasterias ceratofera

This is a stunningly beautiful desmid. Its simple form and long spinous processes make this unmistakable in any sample.


Micrasterias foliaceae

The cells of this Micrasterias are square in outline and joined together to form filaments up to 182 cells long. The apex has a peculiar arrangement of large teeth which interlock with each other.

Micrasterias lux

First described by William Joshua from Rangoon in 1886 this desmid has 4 lobes subdivided, slightly inflated at the base, much attenuated and deeply furcate at their ends.


Micrasterias crux-melitensis

This is a nicely proportioned Micrasterias having wide spaces between the lobules which are tipped with 2 spines. There is some confusion between this species and M. radians with the latter differing in having somewhat longer lateral lobes and longer apical lobes. Some authors consider them separate species whilst others consider M. radians a variety of M. crux-melitensis.


Micrasterias thomassiana var. notata


This is quite a large and imposing cell having bidentate extremities. This particular variety differs from other varieties in its lack of surface spines and no supraisthmal processes.


Micrasterias thomassiana var. notata

Phase Contrast

The same cell as that above is shown here in phase contrast.


Micrasterias truncata

These cells are quite small compared to some of the others above. There appear to be many different varieties and forms.




Microscopy UK Front Page
Micscape Magazine
Article Library

Microscopy UK or their contributors.

Published in the November 2003 edition of Micscape.

Please report any Web problems or offer general comments to the Micscape Editor.

Micscape is the on-line monthly magazine of the Microscopy UK web
site at Microscopy-UK Ltd, Microscopy-UK, and all contributors 1995 onwards. All rights reserved. Main site is at with full mirror at