Daniel Greenwood

The language of leaves

Posts from the ‘Trees’ category

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Fungi Friday: 24th January 2020

A week of blissful winter sunshine and endless starry skies, cut short by low clouds. What is the point of January, many ask. If fungi asked themselves that question, they probably wouldn’t be here and therefore nor would we. Nature does not disappear completely in winter. The paucity of species can help introduce us to new ones we never knew existed.

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January to me is a good time to find slime moulds. Yes, I suppose this is two straight weeks of cheating after last week’s lichen love-in. But if this is the only way to raise awareness about slime moulds, I don’t think fungi will mind. I had an hour to look through the wooded slopes of an old estate in East Sussex, to find this week’s quarry.

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There was very little fungi of the mushroom kind, in fact, none. But one of the bad funguys had been making itself felt in the wood. Ash trees had been felled after becoming infected with ash dieback. I used to monitor a woodland at the time of ash dieback’s arrival in the UK and have, since about 2014, watched it rocket across the country. In Sussex it is killing lots of ash trees that are under 50 years of age and the landscape of the South Downs is losing a lot of its higher woodland.

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Here you can see the effect of the fungus, though of course many other fungal organisms will be benefitting from the decay caused by the disease. The rot has moved from the outside in through what are the softer layers of waste wood. Had the fungus weakened two thirds of the overall mass, the tree would probably have fallen down. Lots of people walk under these trees, so that’s why they have to be pushed before the wind shoves them.

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I have been exchanging emails with a fellow macro photographer this week who has been spending hours looking for slime moulds. One day this week he looked for four hours and found nothing. I was lucky enough to walk straight outdoors for a few minutes and happened upon this epic spread on the tree above:

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No, slime moulds aren’t fungi, they’re not even moulds, which are another kind of fungus. I still don’t have the slime mould ID book so any help is welcome.

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The thing that amazed me about these slimeys was that you could barely see them, even when I knew they were there. They camouflaged so well with the glowering winter light. The photos here have been taken with a flash.

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I could have spent all day with this spread but only had an hour and my small camera. Up close they look like little black kalamata olives. Nom, nom and nom. Though inedible.

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The land managers had left lots of standing dead trees which is excellent. There is some epic misinformation going around about deadwood in woodlands and their contributions to forest fires. It’s guff aimed to misinform people, appeal to people’s fears (what a surprise) and promote the destruction of these habitats. In Britain our native woods of oak, beech and so on, are far too wet to ever burn like a heath.

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The crevices seen above are the perfect places to find slime moulds in cold weather. This is because they provide microclimates and protection from the elements.

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Here I found some old stalkballs which are fungi (or maybe a species of slime mould, am not quite sure), plus the real life of the party:

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DISCO. I’m not sure which species of disco the blue cup fungi are, but the orange fruiting body is definitely a slime mould. They were few and I couldn’t get a good angle on them.

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Thankfully this blue disco brought the party on Fungi Friday.

Please do share your finds this week in the comments below. Also here are some fungi things of interest this week.

Thanks for reading.

First mushrooms appeared earlier than originally thought

More mushrooms

 

 

 

 

 

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SLF - 17-11-19 blog-38

St. Leonard’s Forest, West Sussex, November 2019

After so much recent rain, the water flows fast through the s-shaped streambed of Sheepwash Gill. Clouds have consumed a sunny morning, Wealden clay clogs under foot. I’m trying to cross the gill by treading across the buffed sandstone which is usually above water. This is no ‘Robert Macfarlane climbing a mountain up a stream in his pants’ kind of effort. The water runs ankle-high against my boots.  On the other side a dog bounds down off the leaf-littered slope and barks at me, stopping my crossing. It’s big. It jumps around at the water’s edge in that ‘I’m trying to pretend I’m going to eat you’ kind of way. Its owner calls it back and I find another way to cross.

A girl watches me as I find a short gap to hop over. The dog is her family’s. They’re gathered around dens made from branches and logs on the banks of the gill. The eldest man is grappling with a thirty-foot long birch tree that’s hung up in another tree. He’s getting advice from his young son on how to get it down. The man is wearing brown leather safety boots, a sure sign of a construction worker enjoying a Sunday with his family in the woods.

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The birch won’t move much and he gives up. St. Leonard’s Forest is covered in birch. It’s the most westerly point of the High Weald’s heaths, much of which is covered by wild birch and gorse, or otherwise planted up with conifers for forestry. Birch is seen as an enemy or nuisance but it is a special tree that has benefited our species in our evolution. Its wood makes excellent spoons, its bark can be used as fire lighter, its sap tapped for syrup, its branches make brooms. Its Latin name ‘betula’ means ‘to beat’. Getting walloped by birch branches was once a recognised punishment, sometimes in public.

The birches are all yellowing and dropping now, turning to their deep, purple and leafless phase. The small yellow leaves catch by the petioles in mosses and on the splintered fibres of broken heartwood. In the dark pine plantations of St. Leonard’s Forest they fizz and spark.

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Explore the Sussex Weald

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Kingley Vale - 27-10-2019 blog-7

Kingley Vale, South Downs, West Sussex, October 2019

We enter the ashy woods of Kingley Vale, one of the most spellbinding place in the South Downs. Mushrooms are everywhere at the feet of yew, ash and oak trees as the season enters its peak.

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The light is weak so we kneel down next to the mushrooms to look more closely. We find blushers, ceps, deceivers and many brown species that are very difficult to identify.

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Archetypal mushrooms grow with black gills and caps that glow purple. Their collars hang loose like pastry over the edges of a tin.

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Kingley Vale is famed for its ancient yew trees, particularly one area that is heavily visited, the roots of the trees beginning to show above ground from the impacts of footfall eroding the ground around them. They feel like one of the most still and unmoving of tree species, owing to their hardness and strength. Their living tissue is some of the strongest in the plant kingdom and their heartwood is not at all needed for them to remain upright. Their roots can go on producing new trees even when those above ground have died, like the Borrowdale yews in the Lake District.

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Out from under the yews chalk grassland spreads to the foot of the ridge where yew and ash woods cover the hills. Many of the ash trees are succumbing to ash dieback disease, in a landscape where they are content. It is a tragedy but then it is our own fault for unchecked trade of wood products, combined with the eventual spread of fungal spores.

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In the chalk grasslands we find a cowpat with mushrooms popping from the poo. One of them is snowy inkcap, a species I have never seen before, with its powdery cap and stem. It looks like something you might find in a snow globe.

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Climbing up onto the ridge the sun slips away in the west, casting a final glow across the chalky bowl of Kingley Vale.

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The grunting of a male deer echoes in the yew woods broken by the white stags of bare bone ash branches. Knowing some of these trees may be dead lends them a ghoulishness. Their brushheads are fading into history. Many will not be here in years to come.

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The sun glimmers in Chichester Harbour and the sea. A plume of smoke spirals into the evening sky.

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In the dense and dark yew woods on the slope we hear the strange, tropical bubbling of a tawny owl. Here yews reach out into the light at the edges like multi-limbed bodies sucked into a vortex. The yews have clarified the soil, no other plant can compete. Combined with the tawny’s song, the experience is otherwordly.

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At dusk rooks flock in a sea of black over a field-edge wood. Their cawing grows louder and closer as they envelop the sky above our heads, drawing in jackdaws, drifting back beyond the tops of the trees. On the darkening hilltops deer graze like slow-footed, four-legged people. We are left with so many questions.

Explore my Wood-Wide-Web

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Dulwich oaks 2016-4

I’m very pleased to share this invite to a guided walk I’m leading at Dulwich Park in south London on Saturday 10th August 2019. The walk will begin at 11am and run for about 90 minutes to two hours, meeting at the Court Lane Gates.

The walk is free and there is no need to book.

I would encourage anyone who wants to donate to support London Wildlife Trust in their work at Sydenham Hill Wood and the wider Great North Wood and/or become a member of The Dulwich Society.

The walk is general interest and is open to all. It will be a way to learn how to identify common British trees and delve into their natural and cultural history.

I have lots more info about woods and trees on this page.

Please share the poster on social media if you want to!

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My previous posts about oak trees in Dulwich Park can be read here. This story of the historic Great North Wood (which Dulwich Park is a part of) will also be of interest.

Hope to see some people there(!).

Daniel

 

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Storrington, The South Downs, April 2019

A recent walk along the the South Downs on a hazy day with hawthorns. They tough it out in some of the most intensively managed landscapes the UK has to offer.

A hawthorn stands alone, overlooking the folding Downs as they run deeper into West Sussex.

This hawthorn faces out over the Arun Valley towards Pulborough. The Low Weald is hidden by mist in the north.

Along the South Downs Way the trees show signs of pathway lopping, or an extreme politeness to the thousands of users of the National Trail.

A hawthorn obscuring a village built along spring-lines. The Arun snakes away in the background.

 

A tanker sits in an open field. I think that’s a hawthorn splodged against the South Downs Way towards Amberley.

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A monoculture of wheat (I think) with a single oak on the horizon. Wheat has been grown in the South Downs for thousands of years. It has only become mechanised and intensified in the past 100 years. We may idealise the days of horse and plough in the South Downs but it was a harsh and unforgiving existence. Few people could cope with it today. There were also fewer people to feed.

There was a single break of light over the Downs. The hazy nature of the day makes the photo look like a painting. My friend said it was good that the simple things matter to me, which apparently wasn’t an insult. I agree.

 

 

 

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Gull

Farthing Downs, London, January 2014

From the hawthorn trees comes the sparkling sound of thrush and finch chatter. All around the landscape is weighed down by weeks of rain, the sodden grey and blackness, but this conversation lightens the scene. A flock of goldfinch burst into the sky, skipping through the air in their piecemeal flock. Their yellow wingbars flash against black feathers like miniature human warning signs. I train my binoculars on the thorns and see a redwing sat in the branches, contributing to the bird discussion. As I step towards them it ends instantly and so I turn and take a path to leave them.

The stumps of ash trees glow resinous on the hillside, the felled trunks lie supine beside them, the bark darkened by rain, the green and blue lichens thrive without a care for the tree’s demise. The brash has been piled and burned in elevated corrugated iron beds, and to many people this would seem like a careless act of deforestation. But it’s not. Farthing Downs sits on a bed of chalk and is home to a vast array of wildlflowers which are disappearing from the English countryside. The City of London Corporation are here engaging in a battle of restoration. Further along the path a black-headed gull skates low over the lane – I’ve not seen them so close to the grasslands here – propelling itself up and into the wind. Its relationship to winds so cold and blustery seem uneasy, and against this vista of meadows and woods, all the more unique.

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