Fungi 🍄: keeping up with the polypores

This week I stumbled across two of the more charismatic polypores you can find at this time of year. Polypores are bracket fungi that grow like shelves, usually from a tree trunk but sometimes also at the base or from a branch.

On a morning walk I went to check on the progress of a polypore I’d spotted several months ago (pictured above in late June 2021!), growing at the base of a large oak tree.

Oak bracket is one I posted about almost exactly a year ago during a visit to Suffolk. It also goes by the name of weeping conk, with a scientific name of Pseudoinonotus dryadeus. It’s a parasitic species, which means that this tree may be suffering some internal, ‘mechanical’ trouble. I hope not because it’s one of the largest in the area and is right next to a path. This makes it much higher up the chopping order if public health might be deemed to be at risk. I will never forget being taught that trees weren’t a hazard until we showed up.

This is a very attractive fungus, if you like a dough that drips caramel. It grows at a fairly critical part of the tree, where it meets the ground. It’s crucial because the tension of the roots holding the trunk upright.

Look into those hundreds of caramel eyes and tell me this is not one of the most beautiful fungi out there.

Later that evening I cycled out to the countryside on what was the end of a September heatwave. The landscape was very dry and smelly. I could smell the manure from my house two miles away in the daytime. That evening I became acquainted with the stench up close – muck spreading in the fields. It was absolutely rank, undoubtedly made far worse by the heat and lack of rain.

My route took me past the 800-year-old Sun Oak. Like the large oak I saw earlier that morning, this tree was also home to a charismatic polypore fungus.

This red button is a beefsteak fungus, Fistulina hepatica. It may also have been a red button – do not press the red button. Unless you want to continue watching this programme (BBC joke).

Oh go on then.

In reality this fungus will grow out to form something that looks like a human bodily organ (hepatica). It’s often on oak or sweet chestnut, especially more mature trees. It’s another parasitic species but it’s said to grow too slowly to ever cause the tree structural problems. We should remember that these fungi have been growing with their hosts for potentially millions of years. It’s the impact we have had on their habitats that have made the trouble. Check yourself before you wreck everything else.

Here’s a recent example that cost me several milligrams in blood as the mosquitos were hanging out under this tree waiting for me to arrive. Beefsteak indeed.

Thanks for reading.

More mushrooms

Land of the lousewort: healing a broken landscape in the White Carpathians

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In September 2017 I visited the White Carpathians on the Czech side of the Czech-Slovak border. The White Carpathians hold wood pasture meadows with the highest plant diversity on Earth per square metre. This is a landscape heavily impacted by people but may be fairly close to the pre-human ‘wildernesses’ of Europe. Here conservation efforts have yielded great success in preserving part of a once international wildlife corridor.

The White Carpathians, Czechia (a.k.a Czech Rep.), September 2017

The sun beats down on the village of VĂĄpenky and in the trees high winds blow off from over the White Carpathians. The sky is a deep, summer blue but in the orchards the colours of autumn are appearing. The meadows are dry and grain-coloured, red apples and green pears drop into the cropped grass.

We follow the forestry road through tall beech woods that stand like the framework of a cathedral incomplete. The wind lashes them but some stillness rests in the opening low between the silver-grey trunks. The limestone quarry track bends up and over into a clearing where the forestry machines have deeply rutted the road. They have also cleared the trees but for one long, thin beech that stands alone, its bark bleached by the sun.

The landscape of a recently deforested area is shocking, wreckage. But this industry is one of the most important in the whole of Czechia. Many lives are sustained by it. Still, I wish we could find a way for horses to still remain an integral part – something I’ve seen in Romania – and that its culture was not so macho, chauvinist and driven by putting profit above good ecological stewardship.

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The clearing of trees has opened up views of the valley, showing forested mountains and peach rooftops. For a country that is nowhere near as pious as neighbours Poland and Germany, each village or town has it church, climbing above all else.

We are looking for a nature reserve called PorĂĄĆŸky but our map failed to show the road we were taking some time ago. We speak to a Czech woman heading down a track with freshly picked parasol mushrooms in her hand. She points us back up the trackway, fingernails cut and painted indigo, her hair dyed reddish-brown.

The end of forestry land is always marked by a boost in tree diversity. Here hornbeam, a tree of no forestry value, grows. So too hazel, oak and small-leaved lime – the Czech national tree. These are all species of the pre-industrial forestry age, wildwood species of great use to human hand and hearth, but not the modern machine.

Light breaks through the edging of broadleaved wood to reveal grasslands and the sky atop the hill. Again the wind gusts. Reaching its top we enter PorĂĄĆŸky, the protected area of wood pasture we had hoped to find. The landscape is cropped grass and single oaks. You would have not the slightest idea that these are the richest meadows on earth.

They are a man-made and exploited habitat, but they are the truest symbol of harmony between people and nature. In fact, they may even be closer to what the pre-human woodland landscape of Europe was like, due to the cropping of large, roaming groups of wild grazing animals we have now made extinct. ‘Rewilding’ in its purest or most puritanical form wants that world back.

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The White Carpathians are the lowest lying, most westerly extent of the Carpathians massif, stretching east to Romania where they reach their zenith. It is a landscape that holds great mystery, wildness and fascinating human cultures. What a life it could be to travel back and forth across the range, witnessing its wildlife and spending time with the people making a living from its soils, woods and meadows.

Eddie, my hiking companion, and I, have been to their furthest point, and there, too, are found meadows of great diversity. In Romania ancient traditions are dying out as people move to cities – what contrarily is thought to be the driving force behind the return of wolf, bear and other megafauna – the rewilder’s dream. In the White Carpathians conservation initiatives have led to the protection of the meadows and their continued management.

Two days ago we visited the headquarters of the BĂ­lĂ© Karpaty protected landscape area or CHKO in VeselĂ­ nad Moravou where we learned that one of the great successes for the organisation has been the return of orchards to the landscape. Vast tracts of this landscape have been returned from arable farming to species-rich grassland, righting wrongs of the post-war Soviet era. Fruit trees have returned because they offer something in return to local people – fruit.

Here in Moravia the Czechs have achieved great things. Grasslands are the most threatened habitat in the world, due to intensive agriculture, afforestation and development, and they have succeeded in both conserving what remains and bringing it back in other areas.

I have recently taken an interest in the Twitter account of Tibor Hartel, an ecologist in Romania whose work includes the mapping of ancient wood pasture. Unlike Czechia, Romanian wood pasture is poorly protected and local groups and individuals must act independently to save these amazing places often, it would seem, without government help. Imagine that this landscape once ran across the Carpathians, from Moravia, through the Ukraine, to Transylvania in the eastern corner of Europe. Even Prince Charles has taken an interest.

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Walking through PorĂĄĆŸky it has the feel of an English parkland, the single oaks dotted amongst the green. I first visited here in 2014, hiking over the meadows with Libor Ambrozek, the former Czech Environment Minister and then head of the White Carpathians protected landscape area, or CHKO. I was blown away, the sheer abundance of orchids and the fact of its singular richness. In May 2014 a storm blew in and we were drenched in the open pasture. Today the wind overwhelms and the sun bears down, the glare intense.

Jays pass almost every few seconds, back and forth to stash acorns. They are in the process of ‘scatter-hoarding’, the act of burying acorns in places that may well one day grow into the new oak trees of this landscape. These are birds in an autumn-pique. Beyond them buzzards soar but the wind deters the smaller species. In the grasslands clouded yellow butterflies feed on knapweeds and dandelions, red admirals bolt from the dark plantations. We find a single aspen, its trunk crooked, whipped north by decades of strong winds. Half its canopy shows red in its leaves.

To many this kind of landscape is at odds with the contemporary ethic of rewilding, or ‘allowing land to return to its natural state’. If that were to happen here many species would become extinct. One plant clinging on, Pedicularis exaltata, a species of lousewort, is only found in this area away from other localities in Belarus, Ukraine and Romania. Its presence suggests a once-continuous wood pasture landscape across the Carpathians between the Czech-Slovak border and eastern Romania. It can’t be seen today as it flowers in spring and summer. Instead the ground is dotted with meadow saffron, a pink crocus.

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The wood pasture as it looks today was created and ‘refined’ thousands of years ago by people clearing woodland – likely of oak, ash, hornbeam and hazel – to allow their domesticated cattle and goats and Mesopotamian sheep to graze. At least that is the common understanding, for could the presence of large, roaming groups of wild horses, bison, elk and other herbivores have meant a landscape more open than the idea of coast-to-coast closed canopy woodland? Compared with today’s measure, the deforestation work of our species was sustainable deforestation due to the population sparsity, moving a possibly more dense wildwood to something more open in places.

The current management and conservation of wood pasture relates to the belief that habitats which are species-rich are the ones which are most important and valuable. But they need to be maintained. If their management involves local people, provides sustenance and perhaps employment, it will work, especially in a place like Czechia. This may lack the perceived poetry of rewilding, but its practicality brings results: the continued existence of the world’s most important wildflower meadows and all the other chains of life which depend on them.

With thanks to my travel companion Eddie Chapman, friend and guardian Zuzana Veverkova, Ivana Jongepierova and everyone at the CHKO office.

 

Oaks of London: Clapham Common oak

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This English oak is easily missed, to the point where I didn’t notice it was an oak until looking at the photo later. This early spring sunshine is the kind that brings people to sit underneath trees, like the man in the distance on Clapham Common. His bike is resting against the trunk behind him.

Oaks of London

Oaks of London: Sketch for Enfield oak

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This English oak (Quercus robur) is alongside the Great Cambridge Road near Turkey Street station in Enfield, north London. It was photographed on my phone in January 2017. It stands in what evidently was once a more open, rural landscape. It’s a big, healthy-looking tree, likely between 200 and 300 years old. What I like about this one is the clash of the old and the new, rural and urban. If it can remain in peace it could live a good many centuries. This is dependent also on a gradual reduction in emissions from the nearby traffic as predicted move towards electric vehicles progresses and its ability to remain unimpeded by either self-seeded trees or new plantings. If this landscape was abandoned in future, the oak would create a new woodland of oaks around it.

Oaks of London

 

Oaks of London: February in Richmond Park

Richmond Park is a National Nature Reserve managed by the Royal Parks. It’s home to an absurd array of veteran and ancient oaks. Some of the older trees show clear evidence of pollarding, but no sign of anything recent. It was a wet and windy day in south-west London, your camera equipment has to be as tough as oak to stick it out for long in these conditions. I’ve overexposed some of the images as it was so dark and dreary, and oak doesn’t burst with colour in winter. The park itself is a shock to find, a vast expanse somewhat pegged back by the constant chunter of traffic passing through.

Oaks of London archive

Oaks of London: Sketch for Hounslow oak

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Tree: Old common boundary of Hounslow Heath, Hounslow, west London, November 2016
Species: English oak, Quercus robur
Age: Between 200-300 years?
Status: Under attack

This phone photo was all I could take at the time of this sprawling specimen, so let’s consider it a sketch. It was on the western edge of Hounslow Heath in west London. I know less about west London’s natural history than the south, though I am familiar with the Crane valley. This oak is probably a coppice or a felled, accidental coppice, which has regrown. It is well-climbed but showed signs of charring from fire at the base. Gorse nearby had been burnt in what are considered arson attacks. In many ways the fact this tree is not older and more cavernous and has fewer points of entry for fire may protect it. Hopefully the arsonists – common in urban nature reserves – grow out of it or else are prosecuted.

Oaks of London archive

Oaks of London: The Beulah Spa oak

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Tree: The Beulah Spa oak, Croydon, London, October 2016
Species: English oak, Quercus robur
Age: Between 300-600 years
Status: Good

Next up on my slow-motion journey through the oaks of London is another of the Great North Wood oaks. This was shown to me by Jo Wright and Sam Bentley-Toon.

This oak is a confusing one. At first sight it appears to be an ancient pollard, possibly 500-600 years of age. Closer examination shows that it may actually be a coppice or regrown fell, meaning it’s more like 300 years old at most. Oliver Rackham pointed out that coppiced oaks can look like pollards in the way other species would appear to be pollarded.

It’s situated in Spa Wood (or the Lawns) in South Norwood. It is certainly a remnant of the Beulah Spa, created in the 1840s before the opening of the Crystal Palace. Therefore it is another Great North Wood oak.

Links: History of the Beulah Spa – Norwood Society