Rare fungi benefit from fire

Anthracobia melaloma

Translated from the Dutch Mycological Society:

Wednesday, April 29, 2015

In January, a few special fungi which benefit from burning were found on the remains of an illegal fire. These were Anthracobia melaloma and Plicaria anthracina. Both are on the Red List. It’s special enough to find them in the winter, because fires occur more during dry summers. Two months later it was the turn of the Plicaria endocarpoides mushroom to appear.

Plicaria endocarpoides

Helvella acetabulum fungi in the Netherlands: here.

Gloeophyllum abietinum fungi in the Netherlands: here.

Rare albino mushroom discovery in the Netherlands

Albino larch bolete, photo by Peter-Jan Keizer

Translated from the Dutch Mycological Society:

Wednesday, March 25th, 2015

In September last year Peter-Jan Keizer discovered an albino form of the larch bolete fungus on the site of the former Soesterberg military airbase. There, larch boletes had been found before. Then, Mr Keizer saw the at first sight unknown mushroom. After investigation it turned out to be an albino mushroom. Keizer has sometimes previously found albino mushrooms, but these observations remain extremely rare.

Dutch fungi atlas will be published

Ecological Atlas of mushrooms in Drenthe

Translated from the Dutch Mycological Society:

Wednesday, March 4th, 2015

On March 13, the mushrooms atlas of Drenthe province will be presented. It is the first time that a book about mushrooms appears written in the Dutch language from an ecological perspective: where does a particular mushroom grow and what does its presence say on the local environment and soil conditions. The Ecologische Atlas van Paddenstoelen in Drenthe will be presented in Zwiggelte (Drenthe).

The eight-kilogram atlas was compiled by professional and amateur mycologists with good reputations at home and abroad. The atlas has 1.700 pages and consists of three parts. Due to the size and the significant and sustained efforts which underlie it, this atlas is already called by some “the mother of all atlases”.

Omphalina gerardiana fungi in Drenthe: here.

Fungi in Hulkesteinse Bos, the Netherlands: here.

Cauliflower mushrooms, not anti-dog poison

This video says about itself:

We find a Cauliflower mushroom ! (Sparassis crispa)

18 September 2014

My son was raised in the forests helping wild-craft edible mushrooms. Every year we find at least one Cauliflower – the first ending up in a bread casserole with chanterelles.

Translated from NOS TV in the Netherlands (they put the wrong photo with their new item; not of a cauliflower fungus, but of a coral fungus):

Baked sponges in Huizen turn out to be cauliflower mushrooms

Today, 11:33

The suspect sponges that were recently found among bushes in Huizen turn out to be actually fungi. That is the conclusion of investigations by the police and the Forestry Commission.

The finder guessed that they were baked sponges and that they were intended to kill dogs.

According to the Forestry Commission in Huizen, these are innocent fungi which normally grow deep in the forest. They are harmless to dogs because the animals do not like eating the fungi. …

The past few days came from different towns alerts about baked sponges supposedly deposited by people who hate dogs.

The sponges are baked in fat and smell good for dogs and cats. But once inside the stomachs of the animals they will expand and they can be lethal.

Except in Huizen sponges were also found in Almere, Hengelo, The Hague, Leiden and Saendelft. It is still unclear whether the sponges in these other places will also prove to be cauliflower mushrooms.

Penny bun, Dutch Mushroom of the Year

This video from Hungary says about itself:

26 July 2012

Boletus edulis is fairly easy to identify. One of the common features of all the varieties are the chicken wire like reticulation on the stem at its apex (think of the reticulated giraffe, the pattern on the common giraffe is what is called reticulate). It will have a bronze coloured cap with a white or yellow underside and stem. Some may have a slightly green tint but they will never be red.

The fruit body consists of a large and imposing brown cap which can reach 25 cm (10 in) in diameter and 1 kg (2.2 lb) in weight. Like other boletes, it has tubes/pores extending downward from the underside of the cap, rather than gills; spores are released at maturity through the tube openings, or pores. The pore surface of the B. edulis fruit body is whitish when young, but ages to a greenish-yellow. The stout stipe, or stem, is white or yellowish in colour, up to 25 cm (10 in) tall and 7 cm (2.8 in) thick, and partially covered with a raised network pattern, or reticulations.

The fruit bodies can grow singly or in small clusters of two or three specimens. The mushroom’s habitat consists of areas dominated by pine (Pinus spp.), spruce (Picea spp.), hemlock (Tsuga spp.) and fir (Abies spp.) trees, although other hosts include chestnut, chinquapin, beech, Keteleeria spp., Lithocarpus spp., and oak. The fungus forms symbiotic associations with living tree roots, and produces spore-bearing fruit bodies above ground in summer and autumn (they can be difficult to find being hidden amongst fallen needles / leaves).

Although fruit bodies may appear any time from summer to autumn, their growth is known to be triggered by rainfall during warm periods of weather followed by frequent autumn rain with a drop in soil temperature. Above average rainfall may result in the rapid appearance of large numbers of boletes, in what is known as a “bolete year”. Studies have concluded that the maximal daily growth rate of the cap (about 21 mm or 0.8 in) occurs when the relative air humidity is greatest, and the fruit bodies ceased growing when the air humidity dropped below 40%. Factors most likely to inhibit the appearance of fruit bodies included prolonged drought, inadequate air and soil humidity, sudden decreases of night air temperatures, and the appearance of the first frost.

The flavour has been described as nutty and slightly meaty, with a smooth, creamy texture, and a distinctive aroma reminiscent of sourdough. Young, small porcini are most appreciated as the large ones often harbor maggots and become slimy, soft and less tasty with age. Peeling and washing are not recommended. The fruit bodies are highly perishable, due largely to the high water content (around 90%), the high level of enzyme activity, and the presence of a flora of microorganisms. When you cut them lengthways – the insides remain white. The underside of the cap is always sponge like on a Cep.

Fruit bodies are collected by holding the stipe near the base and twisting gently. Cutting the stipe with a knife may risk the part left behind rotting and the mycelium being destroyed.

The Dutch Mycological Society has decided to make the penny bun the Mushroom of the Year for 2015.

They hope to get information this year about where the penny bun and closely related species grow in the Netherlands.

Rare mushroom in Flanders for first time ever

Hygrocybe viola waxcap, photo by Yves Deneyer

Translated from the Flemish mycologists of Paddenstoelenwerkgroep Westhoek:

Monday, December 22, 2014

In Elverdinge (Ypres) during an excursion of the Mushroom Task Force West Flanders Hygrocybe viola was discovered. It is the first observation of this species in Flanders. Across Europe there are only a handful of reports of this mushroom with its lilac-colored hat.

In Belgium one other discovery was made of the rare Hygrocybe viola: in 1977, in Vencimont (Wallonia). There are only a handful of known observations in the Netherlands, the United Kingdom and Denmark (Boertmann, 2010). That makes Hygrocybe viola one of the rarest of the scions of the waxcap family.