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.
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.
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.
QUICK ID TABLE: BAY POLYPORE Polyporus durus
CAP / FLESH
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.
HABITAT / SEASON
On dead or living deciduous trees. Spring to autumn.
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.