Odontoschisma denudatum, Cwm Rhyd-y-gau
Under the microscope the massive trigones (almost as big a the leaf cells) are very distinctive.
Leaf cell structure of Odontoschisma denudatum
Our trip this afternoon in cold, misty conditions to another mining area, near Tarren Saerbren in RCT, was relatively uneventful as far as bryophytes are concerned. But a very large population of Lophocolea bispinosa on the Tarren Silin coal tip was interesting. The tip has been planted extensively with Lodgepole Pine under which there is a large amount of Pyrola minor.