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Bay Polypore

Many bracket (or shelf) fungi grow all year round, or at least from spring through to autumn. This one is a classic example – most common in central Europe but less so farther north.

Polyporus durus The Bay Polypore (Polyporus durus / P.badius) can be found throughout this long season. I live in middle England and find them ‘now and again’ – they’re one of the few ‘good looking’ polypores out there, as many can be quite dull and inconspicuous with bland colours.

The size of the mature fruiting body can differ greatly, ranging from 5cm up to approximately 20cm across. The first group of photos below show several examples from the same group, all different shapes and sizes. The typical ‘off-centre’ stem (which is mostly black – or at least at the base) produces a thin, lobed and often wavy cap. It’s very smooth with a very slight ‘waxy’ feel.

The colour also varies with many shades of brown and mahogany. Age is also a key factor in these variations too. When young, the fruiting bodies are pale/pallid brown becoming dark brown/mahogany at maturity. The first group of photos here show some ‘rich’ dark brown examples – so much so that I had to get a second opinion and microscopic confirmation from the spores. They were indeed Bay Polypores, just darker than usual. As a rough ‘general’ colour guide I would say they’re most often a mild pallid brown, often with darker central zone. But when it comes to identification, fungi like to keep you on your toes!

As many of you will know (or may not know) fungi such as these do not have gills on the underside but have pores instead (from where their reproductive spores will drop). ‘Polypore’ simply translated means ‘many holes’, and in this case they are very small holes; around 5-10 per millimetre! So at first glance the underside looks like a smooth creamy white, featureless surface. You have to take a closer look. And like most polypores, they only grow on tress, trunks or fallen logs etc. In this case the Bay Polypore will only be found on dead or living deciduous wood.

Lookalikes?

You may also stumble across the Blackfoot Polypore (P. leptocephalus) which I find is a more common species but essentially smaller (cap ranges from 2-10cm across) and much paler with radiating streaks on its surface. It is also found on dead/dying deciduous wood, but not living trees.

Bracket fungi for foraged food?

Well, to be honest, there are not many bracket fungi out there for the pot. Many are too thin, too tough, too bitter or all of the above! Never mind, I’m sure they appreciate not being eaten to carry on they’re great ecological work.

So, keep a look out for all those variable brackets out there this spring, summer and autumn (especially on fallen trunks). Enjoy.

Polypore fungi

The typical wavy/lobed shape of the Bay Polypore. Notice the dark/blackish stem base.

Bay Polypore

Older examples of the Polyporus durus – Mahogany brown in colour and extreme wavy/lobes edges.

QUICK ID TABLE: BAY POLYPORE Polyporus durus

CAP / FLESH

5-20cm across.

STEM

0.2-0.4cm x 0.5-1.5cm, off centre. Black(ish) more so at the base.

PORES / SPORE PRINT

Very small, circular (5-10 per mm). White/pale cream.
Spore Print: White (see how to take a spore print here).

HABITAT / SEASON

On dead or living deciduous trees. Spring to autumn.

EDIBILITY

Not edible. Too tough and bitter.

The Genus POLYPORUS (Polypores): Characteristics to look out for:

• Nearly all are bracket fungi, but a few are with typical cap and stem but with pores instead of gills on the underside.
• Usually tough/leathery or hard and woody.
• Many are perennial or annual
.

A Winter Polypore in Spring

Apart from the usual (and culinary preferable) spring mushrooms out there such as the Morels and St.Georges Mushroom, there is still one pretty common woodland mushroom you may come across.

Winter Polypore MushroomThe small and beautifully formed Winter Polypore (Polyporus brumalis) is quite a common winter/spring mushroom which is actually one of the smaller polypores to discover in woods.

Polypore literally means ‘many pores’ due to the holes showing on the underside of the cap. These are the open ends of decurrent tubes growing downwards from the underside of the cap. All members of this genus come in a variety of shapes, colours and sizes, but they consistently feature the typical cap and stem morphology of a regular mushroom with gills.

The common name is quite relevant, as this mushroom has an uncommon fruiting season that typically begins at the end of autumn continuing through to the end of spring. Not many mushrooms last through this seasonal time span.

I often find these mushrooms in small groups on large dead beech branches in early to mid spring. I venture out less in winter so I suspect that’s why I don’t see them often during this time!

The cap flesh is very thin and the surface is nice and smooth. It has an average cap size of around 2-8cm. Its shape is initially convex but matures flatter and appears in various shades of tawny/brown. You may often see concentric zones of light and dark brown on the surface too.

The images here show some slightly older examples. They become much more tough and leathery with age, and the cap edge becomes darker. The relatively large roundish/rectangular pores are initially white, but these too discolour to yellowish-brown over time.

They are very widespread and pretty common, so keep a look out for them this spring. Enjoy.

Polyporus brumalis mushrooms

Fruiting bodies of Polyporus brumalis live on through the winter and spring seasons.

QUICK ID TABLE: WINTER POLYPORE Polyporus brumalis

CAP / FLESH / MILK

2-8 cm across. Variable shades of brown sometimes with concentric light & dark bands. Smooth texture, thin flesh.

STEM

Up to 7cm long. Similar colour to cap. Cylindrical shape, sometimes off centre attachment.

PORES / SPORE PRINT

White when young. Turning tan with age. Roundish or sausage shaped (rectangular).
Spore Print: White (see how to take a spore print here).

HABITAT / SEASON

On dead hardwood, esp. beech branches. Late autumn through to late spring.

EDIBILITY

Inedible. Too tough. Little flesh.

The Genus POLYPORUS (Polypores): Characteristics to look out for:

• Nearly all are bracket fungi, but a few are with typical cap and stem but with pores instead of gills underside.
• Usually tough or hard and woody.
• Many are perennial or annual
.