Cromer Cliffs
Sycamores (Acer pseudoplatanus) on the cliff providing a good epiphyte habitat
Yoke-moss Sp (Zygodon Sp), Dilated Scalewort (Frullania dllatata), some nice patches of Yoke-moss Sp, which gave pause for thought as they were so tightly twisted.
Notes from JM on Zygodon id
Your photos are very clear and the measurements are what is required - measurements of more gemmae (say 5-10) would be good
to get more of a picture and also some of the leaf features (see following). However, as I conclude - it is most likely Z. viridissimus.
In order to fully key out Zygodon (I have used Smith p 659) - some of the leaf features are needed for full determination:
toothing towards apex of leaf present / or not
lf cells papillose / or not
mid leaf cell width
costa excurrent/ or not
This would enable a check for gracilis, forsteri or stirtonii (of which Z. stirtonii is an outside possibility as found very rarely in Norfolk. The other 2 are very localised). F
or example, Z. stirtonii found at Stratton Strawless churchyard in 2008 by Norfolk Bryology Group. Latest record 2018 at Roughton again in a churchyard. Only 21 records for Norfolk on NBN.
Then you get to Z. conoideus which has gemmae 7-8 cells long and without longitudinal cell walls (plus cell width on mid leaf required).
So from your photos I would say it is not Z. conoideus.
Then Z. viridissimus - versus - Z. rupestris. These are separated on gemmae width, and presence of longitudinal cell walls present (sometimes in
viridissimus or not at all in rupestris). Your widths are 32 and 34 and one has a longitudinal wall. So on balance therefore I'd say Z. viridissimus.
Gemma of Yoke-moss Sp (Zygadon Sp)
Hart's Tongue fern (Asplenium scolopendrium)
Wet flush area at the base of the cliffs
The capsule of a possible Seligera Sp (green and globose) accompanied by the capsule of a Dicrenella Sp
x200
x400
Dicranella Sp
The recurved margins are visible along the whole length of the leaf.
The costa is well defined, narrow and bears A relationship of 1:6 to the width of leaf towards its base in this case.
Suggesting Variable Forklet-moss (Dicronella varia)
A nice colony of Fern-leaved Hook-moss (Cratoneuron filicinum)
Crescent-cup Liverwort (Lunularia cruciata) on the path coming down the cliff
Fly Sp
Jelly Lichen sp
Endive Pellia (Pellia endivifolia) growing on the cliff side.
Slime Mold Sp in amongst the Endive Pellia