It’s very rare that I do not see one of these bracket fungus when I’m out and about on a forage. They grow quite large and are around all year. It would be hard to miss one.

The Birch Polypore or Razorstrop fungus (Piptoporus betulinus) is an extremely common polypore fungus. As the name suggests, it is found exclusively on birch trees.

At maturity they are typically semicircular or kidney shaped as they grow outwards from the tree body. Shapes and sizes may differ a little but generally this is the norm. As I mentioned earlier, they can grow to a good size – between 20 – 30cm across and 8cm thick! They’re quite a sight to behold when they get to this size.

The colour is that of pure white (when younger) and as it matures it changes to a dull grey or tawny brown. It’s smooth surface often cracks, showing white flesh underneath. The consistency is spongy or slightly rubbery to the touch. These fruiting bodies can usually last from one year into the next, that is why you can see them all of the time over the winter months.

Typical semi-circular/kidney shape of the Birch Polypore

On the underside the pored surface is smooth and pure white, but over time this gets marked with dark patches from age and/or insect attack.

I know what you’re thinking though. Is this fungus edible? Well, unfortunately not. It actually smells quite pleasant but it’s taste is quite bitter. It’s a shame, I know.

At least it had it’s uses even as far back as 5,300 years ago! In 1991 “Ötzi the Iceman”  (Europe’s oldest natural human mummy) was discovered by German tourists in the Alps. Found in his possession were two species of polypore mushroom. One of which was the Birch Polypore (for medicinal use) which is known to have antibacterial properties. It could have also have been used to sharpen blades or tools – hence the name ‘Razorstrop’.

Here are some very young Birch Polypores growing out of from the bark.

King Alfred was a terrible cook. In fact (but really in legend) while hiding from the Danes, he’d left a whole batch of cakes in the oven. They were suitably burnt and naturally ruined. So I can only guess he went to the woods and scattered them everywhere on dead ash trees to try and cover up his mistake and pass them off as some kind of fungus. Or something!

King Alfred’s Cakes (Daldinia concentrica) attach themselves on the dead wood of broad leaved trees, mainly ash and beech. It’s one of those distinctive fungi I see every almost every time I’m out in woodland. Although their season is summer to autumn, the older specimens linger on the wood for years and years.

Their appearance is literally that of some burnt cakes or even lumps of smooth charcoal. Older fruit bodies have a shiny surface, but younger developing fruit bodies are red/brown in colour with a duller surface. If you were to cut one open it would reveal silver/light and black concentrical zones (hence the ‘concentrica’ in the scientific name), very similar to the ring zones of a tree – or at least half a tree (due to their hemispherical shape).

Typical black lumps or ball shapes growing on dead logs

Other ‘common’ names for this fungus are Coal Fungus (for obvious reasons) and Cramp Balls because it used in an old folk remedy for night cramps. I think I’d rather have the night cramps!

And as a great bush craft tip, these beauties are great for starting fires! The inner flesh of an old, dry specimen can be lit with a ‘firesteel’ flint for example (or even a magnifying glass). It will slowly smolder, much like your barbecue briquette and can be used to light your tinder.

But needless to say – much like burnt cakes – these fungi are not edible.

This is one  of the common fungus sights around. In fact it is one of the most commonly recorded fungi in Britain. I’m talking of course of the Hairy Stereum or Hairy Curtain Crust (Stereum hirsutum). You’ll find it layered on the dead/fallen wood and stumps of deciduous trees – and it’s appearance is all year round. Shame it’s too tough and leathery to even think about putting in the pan! Damn!

It’s a bracket fungi and has a semicircular shape which is wavy or curtained in appearance. The ‘zoned’ yellow/brown fruiting bodies typically form in many rows, overlapping each other as they go. I think they look quite pretty when in full bloom – especially when there’s a quite a few of them. Each individual cap can grow up to 6 cm in width and can be up to 3mm thick. Older groups of the Hairy Stereum turn green with algae and look like some kind of Martian slime lettuce! (It does!)

So what’s this ‘hairy’ business all about then? Well, on initial viewing you don’t notice, but on closer inspection you can see many hairy tufts along the upper side. And as a bit of extra trivia, hirsutum in latin means hairy. The brighter yellow/orange lower surface, which is smoother, releases the spores. When older, this underside fades to a dull grey/brown.

So to sum up – If you haven’t seen any of these yet – you’re on the wrong planet. And yes – they’re inedible.

Seen all year round - Typical rows of the orange/brown wavy fungus Stereum hirsutum.