Garden bryo query

Continuing the recent garden bryo theme...the pale green moss in the photo below turned up in a planter in our garden a couple of years ago. I didn't get around to taking a sample, and soon after the stems collapsed and the plant died.

The colour is a pretty good likeness to how it appeared in life, so I think it must be Pohlia wahlenbergii - but I'd appreciate confirmation, if possible, as I've not seen this moss elsewhere in urban Cardiff. As the photo below shows, it was growing in a soggy, neglected  planter (with no drainage). The only close associate was Bryum capillare.

 

Thanks

Nant-y-cafn square bash

After spending all yesterday on the computer I decided to get out for the last couple of hours of daylight and headed up the Dulais Valley to SN80D, which was in need of a boost. My plan was to target some of the coal spoil areas after a quick look at the Dulais. After a 10 minute session looking around the weir by the social club, I parked at the top of Brynteg above the Nant-y-cafn stream. I could hear noisy water so dropped into the ravine and ended up spending the last hour of light heading upstream towards the railway line, my route ending at an impassible waterfall. The valley was very steep sided, shaley, with dripping banks supporting abundant Pellia endiviifolia and fruiting Hyocomium armoricum (apparently capsules are very rare), [top three photos below]. Some very robust and regularly branching Pohlia wahlenbergii var. wahlenbergii [lower photo below], plants with shoots >5cm were very different to the usual material I see locally. Despite the hint of mildly basic conditions, no real calcicoles were noted and evidence of mine water percolating out through the shaley rocks reduced hopes of finding anything exciting. An interesting site all the same.

 

I climbed out of the now very gloomy ravine at 6:40, which left 15 minutes to pop onto the tip and add a few coal spoil species to the list; the track immediately east of the railway line produced frequent Archidium alternifolium and a little Bryoerythrophyllum ferruginascens amongst others taking the square onto 99. There are far more interesting looking tips than the tiny bit I looked at, and with the conifer forests, heathland unexplored, it shouldn't be too difficult to add another 20-30 species to this square.

Cwmnantlleucu Quarry

On my way up to SN70P yesterday evening I passed the quarry, which was quiet, so I parked in the entrance area and had a quick look at the easily accessible rock exposure. Despite everything being bone dry and caked in dust, making id challenging, species such as Amphidium mougeotii (green cushions on images below) and Racomitrium aciculare with Diplophyllum albicans (the extensive dark grey crud on the images below) could almost be described as growing luxuriantly. I still have a box of dirt-covered samples to go through over the weekend, but there appeared to be nothing particularly unusual or unexpected. One observation of interest on the dirt below the rock face was fruiting Pohlia wahlenbergii var. wahlenbergii, which is said to be rare (photo below).

The large oak on the right side of the top photo had an interesting looking pleurocarp growing on an accumulation of powdery dirt in the fork of the trunk. I was convinced this was going to be something I'd not seen before, but in the end all I could make it was odd-looking Brachythecium rutabulum [in fact Sciuro-hypnum plumosum - see comments]. Is there something I may have overlooked?