Skip to main content

Stigonema

Stigonema


The filaments branch irregularly, and usually from dark furry masses on damp rocks. The cells are rounded, and lie several abreast in the older parts, as shown. Heterocysts scattered, but are not regularly at the bases of branches. The cells vary from 3 to 30um in diameter, but of course the older parts of the plant are very much wider than this. 110a, part of whole plant x20; 110b, tip of a plant showing irregular rows of cells surrounded by mucilage...

RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41

Comments

Post a Comment

Popular posts from this blog

Entromorpha

Entromorpha Plant body tubular hollow (46b c natural size) up to 1 cm wide and 15 cm or more long composed of cells with thick walls and parietal chloroplasts (46a) Sometimes very conspicuous floating in masses on the surface of slow rivers and canals or entangled with larger water plants and may be abundant in brackish water. RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41  
Post a Comment
Read more

Anabaena

Anabaena Planktonic filamentous algae recognisable by their beaded appearance, often curly, and sometimes having thick walled clearer 'heterocysts' (specialised cells) and sausage shaped dense spores at intervals. Cells up to 10um across.Common in the plankton of lakes and ponds, but sometimes occurring in bogs. The figures show parts of two filaments at different magnifications. RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41
Post a Comment
Read more

Ophiocytium

Ophiocytium Cylindrical or sausage-shaped epiphytic or free floating unicells 3-20 micron diameter each with two or more pale green chloroplasts. They vary from short to very elongated and are often curved or even loosely coiled. In the common species shown here the young cells attach themselves to the lip of the mother cell wall which is itself attached to a Cladophora filament. RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41  
Post a Comment
Read more