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Bryophyte report below.

Sub-zero licheneering at Glenamara Park, Patterdale

It was well below zero at the carpark with a thin layer of unmelted snow from a previous day on the frozen ground and a thick coating of frost crystals covering everything– surely it wouldn’t be possible to find anything and, more to the point, could we survive the cold? We set off uphill, fat with many layers of clothing, and warmed up slowly. This strategy of a short walk between trees followed by standing around looking at lichens seemed to work and we stayed out until dusk at 4pm.

Glenamara was originally a deer park, dating from the 16^th – 17^th centuries and covering about 70 hectares of a north-facing upland valley by Ullswater. The National Trust acquired the site in 2002 and shortly afterwards replaced sheep with a small number of hardy cattle as sheep grazing was completely suppressing tree regeneration. Today there are scattered old birch, alder, oak and ash with some hazel, hawthorn and interesting “wild” apple/crab apple trees (Malus sylvestris), but we saw no sign as yet of new trees coming through.

Neil Sanderson surveyed the site for the NT in 2016. He described it as upland pasture woodland and concluded that the only lichen habitat well-represented is that of acid bark communities (Parmelion laevigatae), “due to the past impact of acidifying pollution”, ie acid rain, as well as natural high rainfall acidification (higher than at other sites around Ullswater). He identified only relict base-rich bark (Lobarion pulmonariae) and smooth-bark (Graphidetum scriptae) communities with few species present, as well as small numbers of dry lignum specialists (Calicietum abietinae) – dead wood is well represented at the site.

We had a few of Neil’s locations for interesting crustose species but failed to find them – or perhaps we just didn’t recognise them – so we reverted to the tried and tested method of checking out good-looking trees. Old birch had lovely common acidic bark species, like Ochrolechia tartarea and Mycoblastus sanguinarius, as well as Parmeliopsis hyperopta, a tiny grey foliose species with globose clumps of soredia which isn’t often seen in Cumbria (or most of England). Scattered ash trees had Hypotrachyna taylorensis, new to the Ullswater area, as well as Normandina acroglypta and Catillaria nigroclavata. Diminutive Rinodina sophodes was seen on ash twigs and the equally small apothecia of Dimerella pineti on Malus sylvestris.

A mature oak near the boundary wall at the north edge of the site had a good population of pale Ochrolechia subviridis on the trunk, the granular isidia/soredia showing C+red but no apothecia to be seen. Allan Pentecost had showed us this species in 2019 on an oak lower down beside the playing field, fertile with lovely frosted pruinose discs with isidiate margins. Today’s tree also had Bryobilimbia sanguineoatra, with red-brown apothecia becoming convex with age, growing over moss, as well as a streak of buff-coloured Pyrrhospora quernea.

In the end we had a list of 50-60 species, depending on how the specimens work out, but we wandered over only about a quarter of the site. A return visit as usual may be needed once there’s a thaw and the days are longer.

Text: Caz Walker. Photos: Caz Walker, Chris Cant, Belinda Lloyd, Pete Martin

Glenamara Bryophyte Report

Five hardy bryologists ventured into Glenamara’s frosty wood pasture on a beautiful crisp Sunday morning. The site lies entirely within tetrad NY31X, but straddles all four monads. Due to the conditions the group spent the entire day within monad NY3815. Surprisingly for its location, only 7 species appear to have been recorded for the tetrad in the past so there was a lot to do…

Snow obscured much of the ground so we gravitated towards Hag Beck which was still flowing, and most of the records came from here. After ticking off some commoner grassland species, we started to investigate the beck itself.

Marchantia polymorpha ssp polymorpha proved to be the most ubiquitous thallose liverwort on vertical soil banks all along the beck, with very little Pellia sp present. Plagiochila spinulosa was also found here, together with Fissidens dubius, Trichostomum tenuirostre and Scapania undulata. Platyhypnidium riparoides and Hygrohypnum luridum were common on boulders in the beck itself, together with Thamnobryum alopecuroides, and small bright green patches of Lejeunea patens. Vertical rock above the water-line had cushions of Amphidium mougeotii. Following the beck upstream we found small base-rich areas with Ctenidium molluscum and Tortella tortuosa. Unfortunately, the flushes here were mostly covered with snow, however Sphagnum rusowii and Leiocolea bantriensis were found suggesting that these areas would merit another look. Lunch was necessarily brief due to the penetrating cold, however it did allow us to time to appreciate the stunning views down Ullswater. Two very confiding robins also came to investigate us and hoover up any crumbs. Further up the beck, water was still flowing in several flushes. Green cushions of Blindia acuta were found here together with Palustriella commutata, Hookeria lucens, Rhizomnium punctatum, Cratoneruon filicinum and Riccardia chamaedryfolia. Abundant dead wood was mostly snow-covered, but Riccardia palmata and Tetraphis pellucida were found. By about 2.30 fog started rolling down over Trough Head, so rather than start recording in a new monad we headed down the valley again to find the lichen group. On the way down, Frullania fragilifolia was found on a large Ash tree, its distinctive ‘pear-drops’ scent apparent even in the cold. Having seen no Bazzania trilobata all day, a small patch was located near the beck below the public footpath. As the light was fading,  a tiny Lophozia with red gemmae was found on a very large oak tree on the northern boundary. This could be L. excisa or possibly L. longidens, and has been sent to a referee for determination.

Altogether just over 90 species were recorded, but this would undoubtedly have been higher without the snow. A further visit is clearly required.

Kerry Milligan

Lichen Report

With remarkable timing, our field trip to Scales Wood near Buttermere had a break in the weather, sandwiched between days of rain. Although a long journey for many, we had a good turnout with a mixture of beginners and more experienced group members.  The site is a good oceanic north-east facing wood primarily of acid-barked oak and birch set between 100m and 300m above sea level. We went up through the vegetated boulder field to about half-way up as the sessile oaks give way to birch, and eventually found over 80 lichen species on the mossy trees, rocks and outcrops. This figure includes a few species on the stone bridge at the edge of the site, with Placynthium nigrum on the mortar for example.

Star of the show was the rare oceanic Parmelinopsis horrescens known from Scales Wood as its most northerly location in the UK: nationally scarce and near threatened. One of the Parmelia group, it has grey-green lobes with no pseudocyphellae but with conspicuous isidia and black cilia on the upper surface. It blended in with the other foliose lichens on the twigs and bark, so required careful inspection to find it. We checked that it did the expected KC+ pink reaction. It’s not been seen elsewhere in the Lakes, but perhaps we need to look harder. There is an even rarer P. minarum which looks the same, with no cilia but has a C+ pink medulla.  Parmelia ernstiae was present as well: this looks similar, also without cilia.

The site is designated as an SSSI primarily because it is the largest and least modified example of highly oceanic birch-sessile oak woodland in the Lake District. At its last assessment in 2014, it was in unfavourable condition (no change) due to poor wood structure ie a lack of tree regeneration as there was no stock-proof barrier. As per the survey, we found plenty of dead wood but very few saplings and a couple of sheep present. This issue of under grazing or over-grazing is tricky: too much grazing and there’s no re-gen; too little and the base of trees and ground flora can be shaded, which will affect some lichens. Only slow re-gen is needed, but I think we’ll have to accept some shading if we want new trees to grow so the wood can survive in the long term.  Thankfully we saw no Rhododendron.  And happily there was no sign of nitrogen enrichment in the main wood ie no Xanthoria or Phaeophyscia, with only one instance of Physcia tenella next to the farmland. The birches higher up were reminiscent of the west coast of Scotland, with a lush Parmelion community covering every inch of bark.  We found oceanic specialist Hypotrachyna taylorensis on one oak. We didn’t re-find the only Cumbria record of “Lob scrob” from 1961 – always a long shot.

There were plenty of opportunities for learning, with Parmelia, Flavoparmelia caperata, Ochrolechia tartarea, O. androgyna and Mycoblastus sanguinarius present, along with plentiful Hypotrachyna laevigata with one instance found fertile. Micarea can be tricky but we found relatively distinctive M. alabastrites with white apothecia (C+ red) on several trees and M. stipitata with white stalked pycnidia.  Cladonia caespiticia was found with its distinctive mushroom-like apothecia. Lovely mounds of Cladonia were deemed to be fertile C. subcervicornis after some wrestling with the key. And fertile Cladonia parasitica was found on dead wood with an instant K+ yellow reaction along with Pd+ deep yellow. Bunodophoron melanocarpum was present on rock and birch. This, along with several species fertile, means many happy lichens.

The happy lichenologists, looking back at the wood, saw many unexplored areas to either side – plenty of scope for further visits…

Text and photos, Chris Cant

Bryophyte Report

Despite Scales Wood being one of the largest and least modified examples of oceanic woodland in the Lake District, and an SSSI for that reason, it is surprising that only 41 species or bryophyte appear have been recorded for the tetrad. Our group of six therefore set out with modest expectations, but determined to fill some gaps in the records.

Once over the bridge, our first stop at a large rock gave us all the opportunity for some revision of commoner species and produced the first interesting liverwort of the day, Orthocaulis (Barbilophozia) atlantica with its striking red gemmae. Hyocomium armoricum was also found in a small watercourse here. Moving up the steep slope into the woodland, the abundance of bryophytes on trees, rocks and the ground soon became apparent, suggesting this was going to be a very interesting wood. Early finds included Hylocomiastrum umbratum, Bazzania trilobata, Plagiochila spinulosa and  Saccogyna viticulosa . Scapania gracilis was extremely common on tree trunks and on rocks, together with extensive carpets and frequent hummocks of Sphagnum species  (particularly S palustre and S quinquefarium) on the ground all indicating just how humid the woodland is. Precipitation here is over 2 metres per year!  Several trees with the characteristic ‘brackets’ of Plagiochila punctata were also found. Dead wood had surprising amounts of the tiny Scapania umbrosa, together with Riccardia palmata and Cephalozia (Nowellia) curvifolia.

As we got higher and deeper into the wood, more exciting finds were made. Large areas of the slope are occupied by block scree covered in a carpet of bryophytes with Wilson’s Filmy-fern Hymenophyllum wilsonii quite frequent. Bazzania tricrenata, initially spotted as a tiny clump, was soon being found regularly, often growing through other liverworts such as Mylia taylorii. Anastrepta orcadensis was also quite frequent, its red gemmae giving it a superficial resemblance to Orthocaulis atlantica, but quite obvious differences in leaf shape and orientation were visible on closer inspection. We also found good patches of Hageniella micans, a moss which in England is only known from here and Borrowdale. The real star finds were Harpanthus scutatus, which is mentioned in the SSSI citation, and one tiny patch of Pseudomarsupidium (Adelanthus) decipiens, possibly a new location for this species.

Towards the end of the day we reached Near Ruddy Beck hoping for some different species. Sadly we did not find Jubula hutchinsae which has been recorded in the wood, but did find Andrea hookeri (alpina) growing on a boulder, and possibly Plagiochila bifaria growing on a log overhanging the beck. Heading down out of the woodland towards the track home, we crossed a boggy area with a range of different Sphagnum species, including  S papillosum, S inundatum, S compactum and possibly S platyphyllum, which if confirmed would be the first record for VC70.

The final tally for the day was nearly 80 species (with several samples still awaiting examination). All in all, a most enjoyable visit to an exceptional wood.

Kerry Milligan

Photos: CS=Clare Shaw, KM=Kerry Milligan

Lichens

It seems to be an annual occurrence now: to have a field trip during very hot dry weather. A couple of attendees had sensibly dropped out in advance. We started off in the open on the limestone at the edge of Little Asby Scar, but retreated into the shade of the hawthorns next to Sunbiggin Tarn until we boiled off at 3pm.

The day was one of a series of events in August to celebrate the life of Frank Dobson who died in December 2021. He wrote several lichen books including the essential “Lichens: An Illustrated Guide to the British and Irish Species” now in its seventh edition in 2018. This is a vital part of any lichen outing with keys and information on morphology and chemistry to help identify lichens in the field and when back at base eg using microscopes. On this trip, we had three “Dobsons” on the go at one point trying to work out an id. The British Lichen Society (BLS) will be updating this guide book in due course, no doubt including recent taxonomic changes.

The limestone had some nice usual suspects such as Caloplaca flavescens, Dermatocarpon miniatum, Placynthium nigrum, Protoblastenia rupestris and Squamarina cartilaginea. We spent some time on a Lecanora but didn’t come to a conclusion.

Sue found some perithecia with a black on white cracked crust, which she recognised as potentially being Acrocordia conoidea. Back at base, Chris and Caz eventually concluded that it must be a Verrucaria as it had simple spores that weren’t uniseriate in the ascus – and keyed out a tentative species identification, but the experts we consulted weren’t convinced. Verrucaria species can be tricky to identify, especially where there’s a crust of algae or cyanobacteria on top, as in this case.

Near the tarn, we found some shade for lunch behind a dry-stone wall which sported some more lichens for id. After that we moved to the nearby hawthorns which can be a good habitat for lichens, though the thorns do make it harder to look. There were a couple of instances of the large Ramalina fraxinea along with the more common R. fastigiata and R. farinacea, along with similar looking Evernia prunastri. It was good to hide in the shade, using Dobson to key out some species.

Nearby there was some earthy limestone with some Cladonia species on the edge of the rocks. We saw Toninia verrucarioides growing on top of Placynthium nigrum, along with a dry Leptogium pulvinatum.

We ended up with almost 50 species identified. It is always a pleasure to share a lichen enthusiasm with others in the field.

Text and photos: Chris Cant

Bryophytes

I didn’t have very high hopes of the outing to Sunbiggin Tarn. The forecast was for another very hot day, and although there had been some rain a few days before, it seemed likely that the bryophytes would be dry and tightly curled against the heat. However, four of us had braved the hot conditions and it was good to meet up and to be outdoors.

We parked in the big layby above the Tarn, just west of Little Asby, and started with a look at the remains of limestone pavement to the east of the layby. It was good to familiarise ourselves with some typical limestone species including Neckera crispa, Ctenidium molluscum, Grimmia pulvinata, Scapania aspera, Tortula muralis, Tortella tortuosa, Syntrichia montana, Hypnum lacunosum and Homalothecium sericeum. More surprising was Climacium dendroides, usually a species of damp places. David and Andy found some interesting wispy species, and consulting our field guides we decided they were likely to be Flexitrichum gracile and flexicaule (previously both in the Ditrichum genus). Both are lime-loving species and F. gracile is commonly found on limestone grassland, but F. flexicaule is much rarer and restricted mainly to limestone rocks. In this case it was distinctive, with many stiff, upright stems as shown in the field guide photos and described as ‘thin, deciduous branches with short leaves’. Microscope examination confirmed this ID, with the F. flexicaule shoots showing relatively short leaves on the longer shoots. Leaf sections ofthis species also showed a more abrupt transition between the leaf lamina and the costa compared to F. gracile, where you can’t see a clear ‘edge’ to the costa.

Once we felt we’d seen most of the species we were likely to find here, we drove down to the tarn and went to investigate the boggy area west of the road and down to Tarn Sike. The ground was not exactly boggy, but still damp enough for the bryophytes to be holding on. There were a few Sphagnum species (S. capillifolium, S. subnitens, S. palustre), also Breutelia chrysocoma, Aneura pinguis, Palustriella commutata and falcata, Scorpidium scorpioides and cossonii, Aulacomium palustre. There was a tiny rivulet of still-running water where we were pleased to spot Calliergon gigantea in several patches. There were extensive patches of a blackish Jungermannia liverwort, probably J. atrovirens or pumila, but impossible to definitively identify without perianths. J atrovirens according to the field guide is most common in limestone districts, but both are sometimes found together.

We made our way down to the road, passing some lovely autumn gentian, and from there down to the tarn, where we enjoyed the cool shade of a few trees. There were a few epiphytes there: Ulota phylantha, Ulota crispa, Frullania dilatata, Metzgeria fruticulosa, and a spectacular, very large Puss moth caterpillar spotted by Kerry. At the edge of the tarn was some Fontinalis antipyretica. By now it was about 2 o’clock and getting seriously hot, so we agreed to call it a day and headed back towards the cars. But we were soon distracted by a large boggy area with more Palustriella commutata and cushions of Philonotis fontana, where we were also excited to find some really good areas of Philonotis calcarea. There were actually several patches, looking really healthy and very distinctively curved to one side.

So all in all, it was a surprisingly good day and we were very happy with the interesting finds, though the species list is likely to be quite limited.

Text and photos: Clare Shaw

Bryophytes

A beautiful spring day saw a record turnout for a visit to Brantwood, the home of John Ruskin from 1871 to 1900. The Brantwood Estate covers nearly 90 hectares with a range of different habitats present from lakeshore and garden to oak woodland, gills, mires and upland heath. The general objective of the day was to visit each of these habitats if possible, and generate a decent list of species.

After a general introduction in the orchard, nine bryologists and five enthusiastic estate staff headed into the gardens, leaving the lichenologists examining the apple trees. The short walk from the car park to the Moss Garden produced 38 species, mostly common garden bryophytes but with some good woodland species too such as Dicranum majus and Nowellia curvifolia, plus indicators of base-rich rock and soil, such as Ctenidium molluscum, Neckera complanata and Tortella tortuosa. In the Moss Garden a lush carpet of mostly Rhytidiadelphus loreus under wide spaced oaks produced a stunning visual effect, despite (or perhaps because of) the dominance of one species. Closer inspection revealed several other species here including Tetraphis pellucida on a dead tree stump.

The group then moved swiftly on to Beck Leven, the watercourse which marks the southern boundary of the estate. Oceanic species such as Jubula hutchinsae, Hyocomium armoricum, Plagiochila spinulosa, Platyhypnidium riparoides, and Saccogyna viticulosa were all readily found, together with other more widespread but distinctive mosses of wet places such as Hookeria lucens, Thamnobryum alopecurum and Dichodontium pellucidum. A nice patch of Jamesoniella autumnalis was found on a nearby oak. After lunch, we followed the beck up onto Crag Head, a large intake which includes the highest point on the estate (230m). Fantastic views across Coniston Water to the Old Man and Wetherlam were a temporary distraction until we found the first of a series of mires which produced several sphagna (Sphagnum subnitens, S. capillifolium and S. papillosum) together with Aulocomium palustre and Breutelia chrysocoma. A larger mire with bog pools proved to be more base-rich with Sphagnum contortum, Scorpidium revolvens and S cossonii, and Campylium stellatum. Thuidium delicatulum and Dicranum bonjeanii were also found here.

Descending back through the woods, a small overhanging rockface produced one of the best records for the day, a single patch of Bartramia halleriana with capsules. Our last habitat to visit was the lakeshore. Fontinalis antipyretica was found to be abundant just below the waterline, whilst Cinclidotus fontinalis was frequent on rocks. A small rocky headland gave a last minute boost to the species list with Frullania fragilifolia, Pterogonium gracile, and Trichostomum brachydontium.

At the end of the day, a small group of bryologists and lichenologists reconvened at Brantwood’s Terrace cafe for a much needed cup of tea. A total of 119 bryophytes were recorded on the estate. Many thanks to Brantwood for hosting the visit, and to their staff for their enthusiasm and for making us so welcome.

Kerry Milligan – photos from Kerry Milligan and Clare Shaw

Lichens

A large group including nine lichenologists gathered at Brantwood, 19th century home of John Ruskin, on the east shore of Coniston on a fine spring day. We were joined for a while by estate staff who were keen to find out what lichens and bryophytes they have. There have been no lichen records for Brantwood since 1965 when 42 species were recorded. First stop was the apple orchard, with a dozen small fruit trees grey with bushy lichens and a simple wooden fence equally covered with thalli. Pete gave the group a brief introduction to lichens and found plenty of examples to illustrate the main growth forms. We then recorded as many species as we could, a total of 29 lichens on trees and fence.

What happened next was a new experience for the group – a visit to the cafe for coffee and cake – followed by the more familiar episode of getting absorbed by car park lichens on stone retaining walls including Scytinium teretiusculum. Eventually we tore ourselves away and headed uphill, through the gardens, to the oak woods on the slopes above. Pete was nursing an injured knee so stayed on level ground, talking to the staff and visiting the lake shore where he found Candelaria concolor on ash, along with other lichens.

The oaks above the house looked even-aged as if planted 100-200 years ago, with an understory of hazel, holly and an occasional ash and hawthorn. Most trees had acidic bark, based on the lichen flora we saw, but there was plenty to admire including Parmelia ernstiae, Micarea alabastrites, Arthonia spadicea, Anisomeridium ranunculosporum and a good range of acidic habitat species. The beginners in the group were keen to look at the tiny features on many of the lichens, such as the coarse and fine soredia on Hypotrachyna afrorevoluta and H revoluta.

The boundary wall between wood and field had a good range of crustose lichens including Trapelia coarctata and Opegrapha gyrocarpa, while that on the opposite side of the field had Coenogonium luteum on moss, Baeomyces rufus, Diploschistes scruposus and Psilolechia lucida, amongst others. A birch in the field gave us Graphis elegans and Fuscidea lightfootii and a hazel inside the next strip of woodland was heaving with Normandina pulchella and Thelotrema lepadinum. We looked at crustose aquatic lichens in the beck for a while and kept an eye open for Dermatocarpon luridum  having heard a rumour from the bryologists, who’d been there earlier, that itwas spotted but we didn’t see that.

Before heading back towards the car park we visited an oak obviously larger and older than the others – just as well as it had several small patches of Parmeliella triptophylla on the north side of the trunk illustrating the point that oaks can become less acid-barked with age.

Some of the group were lured back to the cafe for a second time before leaving which sets a worrying precedent for future trips…..

Footnote: Pete’s specimens from the lakeshore included one which later turned out to be Normandina acroglypta. So far the total of species seen in all locations stands at about 90 with a few more possible once specimens are examined.

Caz Walker with photos from Judith Allinson, Pete Martin and Chris Cant

Bryophytes

The Bryophyte contingent was smaller than recently with only four attending on a super blue-sky day. Thornythwaite Wood is owned by the National Trust and is considered one of their top five woods in Borrowdale for bryophytes.  Ben Averis produced an excellent bryophyte report for NT in 2017 and included target notes, grid refs and photos of many of the rarer species. We therefore decided to break with tradition and head directly to find interesting species none of us had seen before.

Thornythwaite Wood has more of the look of a fellside with scattered trees than a closed canopy woodland. This enabled us to walk to the target location without stopping as the bracken-covered fell had limited interest. 

Our first stop was Combe Beck just above the waterfall. Here the beck was braided with numerous boulders. Clare and Gary quickly found a boulder on an island in the beck with Gymnomitrium crenulatum and Gymnomitrium obtusum growing in quantity next to each other. Clare then found Scapania compacta growing close by. We all had a good look and enjoyed this species, also found by Kerry at Glencoyne. As is typical of groups and rarer plants, whilst we all looked at the same boulder, some of the photos and specimens may well have been of other Scapanias. The compacta was later confirmed. (An additional species to Ben Averis’s very impressive list of 177 species.)

Other species seen around here included Hyocomium armoricum, Lophozia incisa and Scapania gracilis.

 We then headed down stream past the waterfall to a rock detailed in Ben’s report on the west side of the beck facing east just below the waterfall. The photo helped to confirm the correct boulder.  On this boulder we all enjoyed seeing Colura calyptrifolia on the vertical face. This rare species is very small but also distinctive. On this same rock was Harpalejeunea molleri and a long list of other species including Lejeunea patens. Nearby we also saw Plagiochila spinulosa and Hygrohypnum eugyrium.

We then headed up the hillside to another Ben Averis location. Gary lead us directly to Ben’s location for Adelanthus decipiens which we all admired and photographed. Only one clump. Just below it were a scratty few strands of Sematophyllum micans, mentioned in Ben’s report. We were fairly doubtful but Gary confirmed one strand later.

We then walked south and climbed towards Glaramara and then headed west down into the valley above Seathwaite Bridge. We then followed a small gill down the steep fellside towards further Ben Averis locations. On the way we saw Mylia taylorii, Frullania tamarisci growing unusually in a wet flush, and Sphagnum inundatum (but not conclusively identified!).

Using Ben’s photos we located Bartramia halleriana which unfortunately lacked capsules making recognition more of a challenge. Nearby was Plagiochila punctata. We looked carefully for Herbertus hutchinsiae but despite having a photo and grid ref we couldn’t locate. This distinctive drought intolerant species was possibly much reduced by last years dry spring and summer.

We then headed further down the same slope and located another Ben Averis site, a stone by the stream under an ash tree. This had some good colonies of Plagiochila exigua which would appear to have increased in quantity from 2017. This was also a new species for us all which we were very pleased to see. A rare but distinctive species. The stone also supported Lejeunea patens and Lejeunea cavifolia. In this general area we also saw Hygrohypnum subeugyrium and Fontinalis antipyretica.

As the sun was about to set we headed down the slope and walked along the footpath back to the car park. Thornythwaite Wood is a very good bryophyte location and we all felt it would be worth a further visit. 

Peter Bullard

Photos by Gary Lawrence and Clare Shaw

Lichens

On a cold and frosty morning, seven lichen hunters gathered in the car park at Thorneythwaite. And quickly realized we were on the cold and shady side of Borrowdale, as golden sun lit up the fells and Seathwaite woods. Ho hum. The frost never melted for us all day.

Ivan Day had compiled a site list for the National Trust in 2017, so we were following in illustrious footsteps. And it was obvious that we weren’t going to be able to cover anything like the whole of the area. So where should we go? Well, we started off with the nearest area: the acid-barked oaks at the north end of the wood. There were some good examples of the Parmelion community, including coral-like Sphaerophorus globosus and leafy Cetrelia olivetorum, red-flecked Mycoblastus sanguinarius and the chunky jam tarts of Ochrolechia tartarea.  We found good quantities of the barnacle-like Thelotrema lepadinum. A new species for the site was Micarea alabastrites, with white apothecia and a C+red reaction. The trees proved ideal for showing less-experienced members of the group some important lichen features. They, in turn, noticed that we performed a dance around a tree in the sun. By-catch included an impressive moth that turned out to be a Spring Usher.

After a lunchtime sitting in the relative warmth of the sun , we headed off back into the shade in search of an ash tree where Caz had found Nephroma laevigatum some years ago. If you don’t know it, it’s a smooth and leafy member of the Lobarion community. And it wasn’t on Ivan’s list. We found ash trees and Peltigera horizontalis, and more Thelotrema lepadinum. Heading south there were more hazels, which gave us Pachyphiale carneola. Protopannaria pezizoides was found on a mossy log: it well deserves its name of “lentil bake lichen”. And we disturbed a barn owl (sorry, but how was I to know there was a hole in the back of the tree I was looking at?).

We had a grid ref for Caz’s Nephroma, but that covered 100m x 100m of slow-to-move-across boulders and trees. Chris found an old ash pollard with the antiseptic smelling Parmeliella triptophylla: maybe we were getting close. We headed up slope a little and then came the cry from Paul: had he found the Nephroma? Yes, there it was, with a little more Parmeliella and lots of Normandina pulchella, Thelotrema lepadinum and Peltigera horizontalis on the same tree: a good example of the Lobarion community.

Time was getting on: but maybe there was enough light to try for the Sticta sylvatica Ivan had found in 2017? We contoured further south, passed the bryologists in the beck and came to the old elm under which the Sticta had lingered on an outcrop. But, sad to say, the elm had toppled over, and we couldn’t find any sign of the Sticta. There was lots of the frilly jelly lichen Leptogium lichenoides however, and the similar but smaller L. teretiusculum.

The journey back to the cars through lovely evening light gave us more Nephroma laevigatum on another ash pollard. A barn owl flew across; was it the same one as earlier? Thorneythwaite had proved to be a great site, with plenty of scope for other visits. But then we seem to say that every time we go anywhere!

Pete Martin

2017 video of Ivan Day on Thorneythwaite’s rare lichens:

Photos by Chris Cant, Pete Martin, Geoffrey Haigh and John Adams