_MG_3841 Trentepohlia

_MG_3841 Trentepohlia

Observation - _MG_3841 Trentepohlia - UK and Ireland. Description: Interesting page about these green algae at: http://bioref.lastdragon.org/Chlorophyta/Trentepohlia.html Some of the woods here have loads of trees covered in Trentepohlia but there seems to be two different colours, this yellowish orange and on other tr

Interesting page about these green algae at:
http://bioref.lastdragon.org/Chlorophyta/Trentepohlia.html
Some of the woods here have loads of trees covered in Trentepohlia but there seems to be two different colours, this yellowish orange and on other trees a much redder orange. I wonder if this is two different species or just variation and whether its possible to tell from photos or if microscopic examination is essential.