Friday 16 August 2013

A smutty month with good days up on high

It’s catching!  Sitting at the microscope one afternoon Janet appeared at the door and said “is this of interest”, holding a big, floppy melancholy thistle leaf, covered in parts by fungus spots.  Amazingly, I scraped a bit of the fungus off and within a few minutes was able to tell her that she had found a fungus with the amazing name of Puccinia cnici-oleracei.  Not content with that there next appeared a leaf from the garden berberis with a similar set of orange spots which turned out to be Puccinia graminis, a rust fungus more often found on cereal crops and with so few records from other species, the fungal department at Kew were happy to have the specimen for their collection.  As you will have gathered Puccinia rusts seem to be
Puccinia cnici-oleracei on melancholy thistle leaf
quite common and when you realise that there are about 250 species known in Britain, there are plenty more to find, one of which will feature a little later in this diary.  As with birds and plants this is the re-productive season for these amazing organisms each awaiting the annual appearance of their specific plant host before beginning their own re-productive cycle.  This is quite handy when trying to identify the particular fungus in that many identification guides list the host plant and the species of fungi you might find on them.  One major acquisition in this line has been ‘Microfungi on Land Plants by Ellis and Ellis’, and in the 860 pages there are a few thousand species listed, all linked to the plants they grow on.  No pictures, but a few line drawings and good descriptions but in a scientific language that takes a bit of getting used to.  Bird watching seems quite simple by comparison but even here you need a type of magnifying glass to carry out your hobby.

The major event of July was helping with local logistics for a visit organised by the locally BSBI Recorder for Moray, Ian Green, and the Wildflower Society.  Outings were planned for Loch an Eilein and Glen Feshie, and following a few phone calls the Conservation Manager for Glen Feshie Estate gave permission to take a limited number of cars into the glen, saving many miles of walking to and from the recording area.  Under a blazing sun and in temperatures in the high twenties, this proved to be most welcome.  The Saturday
Small argent and sable
afternoon to Loch an Eilein was a short outing around the loch, to introduce the Society members from the south of England to species common in the north but rare in the south, and to generally get to know one another.  Lesser twayblade, creeping lady’s tresses and water lobelia were all nice finds as a precursor to the full day out the following day in Glen Feshie.  The Sunday outing was aimed at recording as many plant species as possible combined with an official Site Condition Monitoring visit for a very rare fern, Oblong Woodsia (Woodsia ilvensis), the Feshie site being one of just a handful in Scotland.  After meeting up at Uath Lochans to decant into fewer cars, we made our way up the glen to just beyond the Lodge, and as we prepared for the walk ahead I noticed small, day-flying moths buzzing about the roadside verges, being
Wood vetch
identified later from photos as the small argent and sable.  A new site and quite a way from its nearest neighbour – a good start.  A visit to river gravels where the track ran close to the river produced the brilliantly named tea-leaved willow (Salix phylicifolia) plus a hybrid which was heavily debated and requiring a specimen to be sent of to the UK authority on willows.  Starry and yellow saxifrage were also found on the shingles.  Much further up the glen the group stared in disbelief at a huge patch of white flowers covering a boulder filled gully – wood vetch, a plant which is normally found in small quantities.  The vetch

Glen Feshie outing
indicated lime richness and a visit to the lower boulders found a few plants of limestone bedstraw (Galium sterneri), along with lesser twayblade and the first spikes of mountain sorrel (Oxyria digyna).  Oak and beech ferns were also found in their brilliant fresh, green colour.  The next mini-adventure was crossing the River Feshie before having lunch and for most, this involved removing boots and socks.  A quick check of the riverside rocks produced a single 5-spot ladybird (Coccinella quinquepunctata) but a search of the
Woodsia ilvensis
river gravels failed to find any of the Peltigera lichens often found in that habitat.  With lunch over it was time to head in the direction of the Woodsia site but on the way a search was made for an old record of twinflower in an area of oldish Scots pine.  The estate owners have been following the objective of trying to regenerate the woodlands naturally by deer control and as we walked we could see they were having great success with young birches and pines popping up everywhere.  This management though does mean that the woodland floor vegetation was a little longer than the norm and we had to search a little harder for the as yet, unopened flowers of twinflower, in amongst blaeberry and grasses.  Would the Oblong Woodsia be just as difficult to find?  There was a bit of debate about which scree to check, but eventually by using the “Goto” facility on my GPS we headed in the right direction.  To aid the Site Condition Monitoring, Ian had been given a series of photos of the Woodia fronds from past monitoring visits, and eventually the right rock was
Procumbent pearlwort posed a problem
found – yes, one small rock, around which the fern was growing.  Well done the person who first found the plant, not an easy job on a mobile scree slope.  Fronds counted, photos taken, it was time to head back down river towards the cars.  A pearlwort on an area of extensive river gravels (these alone would be worth a major survey) had everyone scratching their heads and eventually a sample was taken to send off to the UK expert.  The name that came back was, procumbent pearlwort (Sagina procumbens), a fairly common species but the one debated had rather unusual petals but not the right number of stamens.  Back at the place where the cars were parked there was just one last hurdle to complete – getting back across the river.  The
Contarinia loti gall on bird's-foot trefoil
bridge that used to be at this location was destroyed in a recent winter flood and the estate has decided not to replace it.  As folk removed boots and socks once again, a few of us wandered back and forth looking for anything unusual on the river gravels.  A tiny patch of purple saxifrage was the only record for the day of this plant, washed down from its normal rocky habitat and a patch of bird’s-foot trefoil was looking rather odd with bulbous growths instead of flowers, a plant gall which turned out to be Contarinia loti, complete with four larvae per gall when checked.  This was almost a new record for Scotland according to NBN, with just one record along the Caithness coast!  Goodness knows what else there is to find in this amazing glen.

Ian and the Wildflower team were heading up into Coire Garbhlach (a side glen to Glen Feshie) the next day, a visit I couldn’t make, to do some recording of montane flowers, but Ian kindly sent me a list of what they saw.  I have visited this glen on two previous occasions to look for one of our other rare ferns, mountain bladder-fern (Cystopteris montana), but without success.  This fern was originally found by one of the best
Anthracoidea paniceae smut fungus on Carex panicea
UK Ecologists Dr. Derek Ratcliffe, whose diligence produced many unusual records.  I watched the weather forecasts and once I saw a day where the sun would be tamed a little by cloud, I decided this would be the day I would once again try and get back to those impressive cliffs towards the top end of Coire Garbhlach.  With the car parked at Aclean the initial walk is on the level parallel to the River Feshie but as the cliffs at the t
Alpine cat's-tail - Phleum aplinum an alpine grass
op of the glen start to appear, then the climbing begins.  I decided to follow the Allt Garbhlach because of the variety of plants and other species that would grow there compared to the heathery hillsides either side.  The first find was one of the Anthracoidea smut fungi growing on carnation sedge (Carex panacea) and then, on the river gravel the lichen Peltigera leucophlebia.  Ian had left a query following his visit about the true identity of one of the alpine grasses, and, with a good reference as to its location, I managed to re-find it just beyond the top of a very impressive waterfall.  Again, this was a species which had probably been washed down from higher up and when I saw it I recognised it as alpine cat’s-tail (Phleum alpinum) from
Towering cliffs upper Coire Garbhlach
past forays onto the high tops.  With double spiky awns protruding from the flower head it is quite an easy grass to remember, but why just one plant on its own?  A little further on and the towering cliffs were coming into view, how good it was for the body to be behaving itself and to be visiting once again, the natural alpine “gardens” of our mountains.  On the way up the scree below the cliffs was a single clump of mountain male fern (Dryopteris oreades) and on the damper rocks starry saxifrage and moss campion (Silene acaulis).  I knew I was close to achieving a long-held ambition to see one of the UK’s rarest fern and after a bit of
Mountain bladder fern - Cystopteris montana at last!
scrambling around (sorry Janet!) I was within touching distance of the mountain bladder-fern.  It’s not easy taking photos in a windy gully whilst holding on with one hand and finding good footholds to stand upright,
but who cares, my mission had been achieved.  The worst bit about getting to these loft heights (well 800m) is that there is a great reluctance to go back down, so I found a comfy spot for a bit of lunch whilst checking what was on the rocks beside me.  I had seen wholly willow close to the fern, but by my lunch spot was another mountain one, whortled-leaf willow (Salix myrsinites) and on some leaves there were even plant
Puccinia septentrionalis on alpine meadow rue
galls belonging to Eupontania myrsiniticola a wee sawfly whose distribution is restricted to Scotland.  Just to my side I could see what looked like an orchid and sure enough there were several flowering spikes of frog orchid which I was quite surprised to see so high up.  Lunch lasted about five minutes as I was keen to see what else was on the rocky slopes and a familiar lichen found earlier in the day, P. leucophlebia, was found along with the wispy flower spikes of alpine meadow-rue (Thalictrum alpinum) but with some very strangely coloured stems and leaves – more Puccinia rust fungus, but on a mountain so could be a good
Moonwort
find.  Once home it was easily identified (by host and colours) as P. septentrionalis providing just the fifth dot for the NBN UK map.  All good things come to an end and by mid-afternoon I was on my way back down, but with the advantage of height, I was able to see a fairly distinct deer track, quite a way above the Allt Garbhlach, which looked like the right route to aim for.  Interestingly, Ian and the botanists must have done the same thing as quite a way down the track we both found the same patch of the fern moonwort (Botrychium lunaria) growing alongside a still flowering patch of mountain everlasting (Antennaria dioica)!  What a brilliant day.

Earlier in the year, a friend, Sandy, had asked if I would like to be part of an experiment he was considering involving the green shield-moss (Buxbaumia viridis).  The experiment would involve trying to collect spores from the mature moss capsules and, after mixing with water, try inoculating suitable logs with the spores to see if it was possible help the population by introducing spores to new sites.  Having seen so many capsules over the last few years I had been wondering how easily the moss can move around naturally, as capsules suddenly appear in areas (as far as seen by humans) well away from known sites.  To undertake the work it would be necessary to have logs or substrates with capsules outside designated conservation areas to save having the hassle of the red-tape hoops that would have to be jumped through, though a licence would be needed from SNH for the work to allow us to “interfere” with the mature capsules in, as yet, an undecided
Collecting green shield-moss spores
way of how to actually collect the spores.  The moss remains on
Schedule 8 of the Wildlife and Countryside Act 1981 meaning that the moss is “protected from intentional picking, uprooting or destruction” so the work would need to be none-destructive, leaving the mature capsules in place before and after spore collection.  A couple of years ago I photographed spores being ejected from a capsule of the brown shield-moss and it was hoped that by using water, we might be able to “encourage” the capsules to eject spores, for us to collect, whilst leaving the plant in place.  So, midway through July I received a phone call to say a site had been chosen where there were plenty of this year’s mature capsules and that an evening meeting had been arranged to trial spore collecting techniques.  There would be four “enthusiasts” including SNH’s bryophytes, fungi and lichens expert, and the site was a community woodland near Beauly.  At the first log the debate
Green shield-moss spores in vial
started about how best to tempt spores to eject and whilst Dave was applying a second drop of water to one of the capsules via a pipette he noticed something discharge from the capsule.  He then did it again.  I produced some small vials from my rucksack which were smaller than those others had brought and by carefully holding the vial close to the spout of the capsule and touching the capsule with the pipette, bingo, a green splodge of spores was ejected into the vial.  This was repeated at several other capsules with varying degrees of success, but most capsules produced something and certainly enough to continue to the next step of the experiment.  Initially I tried to capture an ejection on camera but failed miserably, but then I remembered my wee camera also had video capability and so, by carefully setting the camera on its gorillapod and focusing continually on the spout of the capsule, an ejection was captured for the first time (as far as I know) on video.  See Link below.  I had just one log with capsules outside any reserve designated
Buxbaumia viridis (green shield-moss) spores
lands and a day later I visited it and, after a long wait to allow the very dry capsules to re-hydrate, spores were obtained ready for the next step.  My inoculation site comprised Norway spruce logs and root buttresses and over an hour the spores were introduced to the potential growing sites via a small pipette, carefully marking each location, along with a non-inoculated control site close by, with white cocktail sticks.  We all await with interest to see if anything starts to grow in late September.  In all the years of working with the green shield-moss I have never actually looked at any spores and, with a small amount of spore mass left I popped a bit under the microscope to see for the first time, what actually make the moss “tick”.

The pine martens have continued to entertain, though with few contacts at the time of writing.  Perhaps the most amazing encounter was on the 1st July when we watched a single animal wander from the squirrel feeders, through the garden to feed on a couple of apples which we had put out for blackbirds by the decking in front of the French windows, which, thankfully, were open.  Janet shouted “it’s on the deck!” just
Pine marten on deck
at the time I had been trying to put a bit of food on a plate to throw out with the apples.  The camera had already been in operation and was lying on the table so very slowly I ventured to the French windows and placed the dish of food on the deck with the pine marten watching a short distance away to my right.  Blow me if it didn’t run away but came to see if there was anything of interest on the plate.  It didn’t try any of the food but did give me a chance to record our close encounter of the “marten” type.  Towards the end of the month Laura was over to visit Ruth, Lewis and the boys and had never seen our pine martens, so I was
Wow!
keeping a bit of an eye open for any activity.  Returning from putting something in the recycling bin in the outside shed I could hear a pine marten in the big pine behind the garage, so I quickly nipped in to tell Laura to grab her camera and follow me with mine, back outside.  We then realised that there wasn’t one, but two martens in the pine and it was probably the presence of Pipsy our cat that was keeping them there.  Eventually the cat returned to the house and the martens headed back towards the squirrel feeders, not two but three of them!  Daylight was fading but there was just about enough light to capture what had to be mum and two youngsters all fighting over who could have which feeder.  Perhaps we need three feeders!

Not content with ascending to 800 metres I was tempted to go looking for a few plants up at around the 1000 metre mark in Coire an t-Sneachea, one of the Northern Coires of Cairn Gorm.  A few chalet visitors have asked, in recent years, about some of the rarer plants that I had seen previously in this area, and after saying that they might be found in this general area, I thought it best to see if it was still possible to see them. 
Salix herbacea and Eupontania herbaceae gall
Alpine saxifrage and Highland saxifrage are two regularly asked for so, with these in mind out came the Leki poles and off we headed for the boulder-field below the crags.  Because of the number of climbers and walkers using this route the path several years ago was quite a mess, particularly in areas close to the wee burn, but, with path repairs that have been carried out in the last couple of decades there is a good path almost all the way to the famous boulder-field.  So, at a gentle plod, I made my way from the car park and up the hill, being passed a couple of times by rope bearing folk, pretty desperate to get to the cliffs to get climbing.  As height was gained, the vegetation became a little sparser and I could see patches of dwarf willow (Salix herbacea) in amongst the rocks by the path.  In need of a decent photo I stopped to seek out one of the better patches and again realised that some leaves were carrying plant galls.  Photos were taken
The Goat Track in Coire an t-Sneachea
along with a leaf specimen for checking once home.  I knew I had seen both saxifrages on either the base of the cliffs or on the damp rocks by the side of what is known as the Goat Track, a narrow track traversing the less steep sections of rock, eventually giving access to the plateau.  Along the damper sections at the base of the rock face the going was quite difficult due to steepness and rock fans from the gully’s above, and it was hard work getting close to what looked like the better bits of rock.  Starry saxifrage was everywhere and the showy white flowers of northern rock-cress.  A common sedge in these sorts of areas is stiff sedge (Carex bigelowii) and whilst trying to find sheathing sedge (Carex vaginata) I noticed that the fruits on some of the stiff sedges were covered in a smut fungus, black balls with a white outer skin.  Hmm, another interesting
Smut fungus (Anthracoidea bigelowii) on Carex bigelowii
find, and an unusual group of fungi that I had been keeping an eye open for with one of the species mentioned in last months diary.  A couple were collected for homework (identified later as Anthracoidea bigelowii).  A patch of globeflowers took me by surprise and though there is a record for the plant nearby, this site appears to be new.  I traversed across to the Goat Track and started to make my way up, keeping a careful eye on any damp rocks by the side of the track.  Somewhere along the upper section of this track, many years ago, I found the Highland saxifrage, but as I climbed higher there were quite a few “new” tracks leaving what I assumed was the old main track,
Students from Glenmore Lodge
and that I wasn’t at all sure where, exactly, the plant had been.  Despite quite a bit of wandering about I failed to find any flowers, perhaps I was a bit early.  I had seen the flower further round the Coire close to an obvious bright green flush on the hillside, so I slowly made my way there, checking all suitable sites as I wandered.  I stopped for a bite to eat and noticed more of the rust on alpine meadow-rue but also what looked like more spots of a rust on the leaves of a patch of starry saxifrage – more homework.  Another of those pesky Puccinia’s – P. saxifragae.  I was also becoming aware of voices nearby and eventually a
Puccinia saxifragae on starry saxifrage leaves
group of trainees from Glenmore Lodge and their leader popped up from below, said hello and made their way over towards the Goat Track!  Two adult snow bunting came close to me whilst having lunch, both collecting food to feed a family somewhere nearby.  Despite spending about an hour in the area of the green flush neither of the saxifrages was found, so time to make my way back down to the car having had another enjoyable day in amongst the alpine plants.

An evening cutting back rhododendron close to the one-flowered wintergreens near Grantown had a bonus.  Checking out a few of the wintergreens after the pleasures of rhodo bashing, a few leaves on a patch of blaeberry looked a bit odd so I took some back to check.  A bit more was found whilst visiting one of the
Exobasidium arescens on blaeberry (Vaccinium myrtillus) leaves 
twinflower sites to re-photo the rare Septoria fungus (see earlier diary) to see whether it was still identifiable so late into summer.  I made a stab at it being Exobasidium arescens, another leaf fungus, and after a request was made to send some to Kew for checking, confirmation came back that I was correct, a second site for Scotland and the fifth in the UK and the first record for 10 years.  Thanks rhodo, a perfect end to my evenings work.  I also visited a few of my favourite bogs to check sedges and small cranberry (Vaccinium microcarpum) patches for things growing on them.  Many of the cranberry sites had good crops of berries
The beautiful Small Cranberry flowers
which should keep the birds happy, and some patches were still heavy in flower – one of the most intriguing flowers you are likely to encounter whilst out botanising.  The visits were just about perfect for seeing lots of raft spiders (Dolomedes fimbriatus) with their nursery webs plus several spiders which look like raft spiders, but only about half of the size.  Possibly these are youngsters from last summer so one for the spider expert to check next time we meet.  A very late family of blackbirds arrived in the garden on 28th and for the
Raft spider Dolomedes fimbriatus
first time we had adult yellowhammers with youngsters in the garden, an indication that they must have bred quite close by.  And finally, hasn’t it been hot?  Our weather station thermometer topped 30 degrees C for two days running, almost making it too hot for butterfly activity on the transects.  As the temperatures dropped towards the end of the month the first Scotch argus butterflies were encountered, it will be interesting to see if numbers reach the same dizzy heights as last year.  Watch this space.

Enjoy the read.
Stewart and Janet

Wildflower Society

Highland Biological Recording Group website

Dr. Derek Ratcliffe – outstanding ecologist and conservationist

The first filmed footage of the green shield-moss (Buxbaumia viridis) ejecting spores

Tick bites, an occupational hazard

Sundew plant with captured common blue damselfly - quite a meal
The brilliant Glen Feshie

Photos © Stewart Taylor