Jubula hutchinsiae, Glyn Neath (28/10/14)
This beautiful, grey-green liverwort is unmistakable with its spiny leaves and distinctive underside.
Underside of Jubula hutchinsiae showing helmet-shaped ventral lobes
The small, helmet-shaped ventral lobes are reminiscent of Frullania, but the spiny, holly-like leaves are characteristic and give it its common name, Hutchins' Hollywort.
I have never seen this species in Glamorgan before. However, there is a vague record in the Mapmate database which refers to a record from the Blaen Nedd and Mellte SSSI (SN8908), which originated from a CCW database (1975-1996). The same database entry holds records of Jamesoniella autumnalis and Fissidens rivularis. The grid reference suggests a monad in Glamorgan but I think the actual site for these record is Nant-y-celin (near Craig y Dinas) where J. hutchinsiae has been known since the 1970s and which is in Brecs.
Jubula hutchinsiae is a Southern Atlantic species with a very western distribution in Britain. It is rather scarce in South Wales.