t was a warm, muggy cloudy morning for our last walk of the season where our aim was to find autumn lady’s tresses, a tiny spiralling flower hiding in low grass. Amongst the damp grass along the main path we passed white, red and bladder campion as well as agrimony, lady’s bedstraw and, as the path widens out to the sunny bank, harebells. Here also we had rock rose, eyebright, fairy flax and quantities of autumn gentian, common centaury amongst field scabious, small scabious. On the bumpy knoll where the leaves of the pasque flower could still be seen, we found devil’s-bit-scabious and plenty of yellow-wort and our target spoecies – autumn lady’s tresses. A number of our walks have been rained off this year so it was good to finish with such a rewarding morning at the flower rich site.
The Society’s final outdoor meeting of a full summer programme for this year attracted a very good attendance on 13 August 2017. Members were greeted with a fine sunny morning and treated to some special wildlife sightings as we walked around part of the Nostell Priory parkland, which is managed by the National Trust.
The bottom lake provided good views of various dragonflies and damselflies, including brown hawker and common blue damselfly patrolling around a large area of fringed water-lily with its attractive yellow flowers. Large bracket fungal fruiting bodies of Ganoderma spp on old oak trees and a giant polypore (Meripilus giganteus) at the base of a mature beech tree were also noted. Eagled eyed members spotted a couple of caterpillars of the comma butterfly feeding on nettles at a woodland edge. The white markings on their backs are thought to resemble a bird dropping, perhaps a good defence mechanism. See attached image. Possibly, the highlight of the morning was the appearance of a purple hairstreak butterfly high in the canopy of an oak tree, which is the food plant of its caterpillars. Although the adult butterfly may sometimes be seen at lower levels it spends much of its time searching high in the tops of oak trees and occasionally other species for honeydew from aphids. For this reason it is easily overlooked and under recorded and certainly it was difficult to photograph on the day. Other butterflies seen, included red admiral, speckled wood and meadow brown. Other interesting wildlife included a hornet’s nest in an old veteran tree and knopper gall on oak.
The knopper gall is caused by a small wasp (Andricus quercuscalicis) laying its eggs in the young acorns of pedunculate oak. This tiny insect forms a second generation in the spring when it lays its eggs and forms small galls on the male catkins of turkey oak (Quercus cerris), which can be found in small numbers at Nostell Priory. At this time of year the acorns become increasingly wrinkled as they develop. In some years this can reduce the number of viable acorns produced. However, many may remain unaffected and perhaps this insect may not be the threat to our native oak that it once feared to have been.
Encouraged by the visit I returned to Nostell on the 17 August to photograph the giant polypore, which was by then much larger. I also noted a further three purple hairstreak butterflies in the same area, together with a brown hawker and migrant hawkers. Images of the brown hawker, which rested for a matter of seconds on a fence post, together with the migrant are attached.
The indoor meetings resume on Tuesday September 12th at 7.30 p.m. at the Quaker Meeting House, Thornhill Street, Wakefield WF1 1NQ with a presentation by Steve Rutherford when he will take us on a journey around the islands of the UK.
The start to the fungus season has been a good one. Many fungi are emerging in lots of locations.
Colin Booker and I took a walk at Walton Colliery Country Park and started finding many fungi as soon as we set out. Amongst lots of earthballs beneath some birches, we found a number of blushers.
There were also dozens of Russulas beneath trees. They are difficult to identify but I think the commonest, shown on the left of this image, was the grass-green Russula (R aeruginea). The yellow one was probably the ochre brittlegill (R ochroleuca). The red one defied my attempts to identify it.
We located a single woolly milkcap and a couple of boletes.
This single orange birch bolete (Leccinum versipelles) was growing beneath silver birches, as would be expected.
We also found this peppery bolete (Chalciporus piperatus), with it’s quite distinctive shiny cap. It gets its name because of its peppery taste. Having said this, never eat any fungus as a result of any identification that I make on this site, or any other!
A day or two later, this evening, I was walking at Ackworth when I spotted a vivid yellow in the grass. I found that this was covering what looked like a dehydrated mushroom.
Having seen a lot of boletes this week, it was interesting to find that the colour was caused by a fungus – Hypomyces chrysospermus – that specialises in feeding on boletes. First they turn white and then a bright yellow colour.
During a walk at Fitzwilliam Country Park, I came across some common puffballs (Lycoperdon perlatum). They were just pushing up through the moss and I thought they looked very striking.
There were quite a few Russulas growing beneath silver birches and young oaks. I identified one of these as green Russula (Russula aeruginea).
At Ackworth, I found a clump of fungi which seemed to be a species of Agaricus. For these, I needed the help of the experts at the British Mycological Society. Agaricus bohusii was suggested initially but Geoffrey Kibby, who has published a number of authoritative guides to fungi, suggested that this fungus was a particularly scaly example of Agaricus subperonatus.
Agaricus subperonatus isn’t a common species, so this was an interesting find.