Neath Canal Bridge

A total of 17 mosses and 17 vascular plants were noted growing directly on the stonework of the canal bridge downstream of the lock at Crugau yesterday. There was nothing particularly rare or unusual about this assemblage, but I always find it remarkable what can be found once you start looking... 

The neat domes of Grey-cushioned Grimmia (Grimmia pulvinata) were noted growing with more sprawling mats of Thickpoint Grimmia (Schistidium crassipilum) on the top of the bridge parapets. Capsules of Clustered Feather-moss (Rhynchostegium confertum) growing on the wall sides were immersed in water droplets creating an interesting effect and Verdigris Tufa-moss (Gymnostomum aeruginosum) was noted growing along the mortar lines.

Enjoying these patches of winter green was a Two-toothed Door Snail (Clausilia bidentata).