End of year square-bash at Rhosaman

An afternoon square-bash in SN71G took the square total from 5 to 83. I spent most time searching an area of colliery spoil which produced 63 species directly on spoil; nothing exciting, those of general interest included Aneura pinguis, Archidium alternifolium, Aulacomnium palustre (unusually plants were scattered over a steep dry bank with a broken sward), Calliergonella lindbergii, Gymnostomum aeruginosum, Racomitrium ericoides, R. fasciculare, R. lanuginosum, Riccardia multifida, Sciuro-hypnum plumosum (surprisingly frequent on shaley ground). Despite a decent return I was disappointed not to find any Ptilidium, nor any Weissia or Fossombronia spp. to name but a few I was anticipating.  I didn’t have time to walk the wooded banks of the Aman, which could well have taken the square total over 100 ... another day perhaps!  I did manage to take a very quick look in the river by the footbridge, where Hygrohypnum ochraceum covered the larger rocks along with a little Marchantia polymorpha subsp. polymorpha. This may have been my last bryophyte outing in what’s been another very enjoyable year of recording. Best wishes to all for the year ahead...

PS. If anyone can put a name to the brown lichen I’d be interested to know.

 Racomitrium ericoides-Cladonia portentosa spoil community

  Sciuro-hypnum plumosum 

  Aulacomnium palustre

  Lophozia ventricosa 

  unidentified lichen

 Hygrohypnum ochraceum

Hook-leaf query

I'm sure I'm missing something obvious, but this hook-leaved moss from Merthyr Common last week has me stumped. It was growing in a flush (or near the stream that ran along the bottom of it - I can't quite remember now) which was probably quite acidic.

I was sure this was going to be Warnstorfia exannulata but there is no trace of a nerve on most of the leaves (some have a faint short double nerve), and I can't see anything that fits the bill. Leaves are 2mm long, hooked but not forming complete loops. Suggestions appreciated, thanks.