Archive for the Category ◊ Identity Crisis! ◊

Author:
• Monday, September 26th, 2011

Here we have a fairly common and sought after tasty mushroom for this time of the year. It likes to grow in dense clusters on stray stumps and logs of broad-leaved trees -  Just like many other brown toadstools too! Hmm!?

Velvet ToughshankThe Sheathed Woodtuft (Kuehneromyces mutabilis) has also adopted other common names, such as Velvet Toughshank, Brown Stew Fungus and Two-toned Pholiota, even though it is not strictly a Pholiota species. But I have seen it named as ‘Pholiota mutabilis’ somewhere else. It just goes to show that scientific names change from time to time as the scientific knowledge of fungi continually advances.

And talking of scientific names ‘mutabilis’ literally means ‘changeable’ in latin. A good choice of name I think, because the caps of this mushroom which are ‘shiny and brown’ (even orange-brown) when moist can change to paler ochre from the centre outwards as it dries. This gives them the characteristic two-toned appearance.

On discovering any type of brown mushrooms on dead wood, most people become instantly suspicious. I don’t blame them at all. Unless you are familiar with other brown woodland species, identification can be a challenge. It has been known to be confused with Honey Fungus, Velvet Shank and Sulphur Tuft all of which grow in similar numbers on dead wood and share certain visual characteristics.

The main identification concern here though is the deadly Funeral Bell (Galerina marinata). Nature has thrown this one into the mix just to annoy and terrify the average mushroom hunter. I don’t currently have any images to show, but if you look elsewhere you’ll see what I mean. The cap can look frighteningly similar in size and shape and also dries lighter brown at the centre (again, depending on moisture level). Fortunately, one reliable comparison is that it has a ‘smooth and silvery’ stem, whereas the Sheathed Woodtuft’s brown scales (beneath the ring) are unmistakable.

Other features such as location, time of year, gills and spore print are not effectively reliable for comparison. So it goes without saying that if you intend to eat them, take extra care in the identification process. If you’re 100% happy just try a small portion first, leave it 24 hours to see how you go, just like you should with all mushrooms you eat for the first time. There’s always a small possibility of an allergic reaction, but fear not, for if it is the Sheathed Woodtuft, it won’t kill you!

I have to admit, the general appearance of this mushroom hasn’t inspired me to eat it, but apparently it is known to be very good with a pleasant nutty taste. But I’m willing to give it a go soon …I think!

Keuehneromyces mutabilis

In groups on logs and stumps in woodland the Sheathed Woodtuft (Keuehneromyces mutabilis). Notice the scales beneath the ring on the stem. This feature is NOT on the similar and deadly Funeral Bell (Galerina marginata)

Quick ID chart

Author:
• Wednesday, September 14th, 2011

There’s a small stretch of coniferous woodland close to where I live, and over the  years I have never seen such a variation of mushrooms, toadstools and fungi in such a relatively small place. Great stuff!

Clitopilus prunulusAnd today was no disappointment either. Poking out of above the leaves in a small clearing were the caps of a small group of Miller mushrooms (Clitopilus prunulus).

This was the first time I’d seen them here and I needed to check all characteristics of this wonderfully edible mushroom (as I always do) but especially this time as they were very close to the woodland/grassland border. The poisonous Fool’s Funnel (Clitocybe rivulosa) – a grassland species – is a sinister looking double for our tasty Miller mushroom.

The Miller has a pink spore print, so I also needed to be aware of confusion with other poisonous species with the same feature. For example, the Livid Pinkgill (Entoloma sinuatum), although not looking too similar, is quite an unpleasant toadstool.

The main  identification markers were all there (see ID table below) – the size, the wavy irregular shape, the soft leathery (kid glove) texture, decurrent gills (that came away easily from the stem and cap), and of course the strong floury (mealy), raw pastry odour were all unmistakable.

The gills of this mushroom are initially white, then change to a mild pink colour as they mature (hence the pink spore print mentioned earlier). But to be on the safe side, I would always recommend you take a spore print (see how to make a spore print), just as I did, to doubly make sure.

Unfortunately these beauties were being systematically killed off inside from larvae infestation. They started at the base, munched up the stem and into the cap. I’m not sure if this killed off the spores developing properly or all spores had been shed (which I’m not convinced about), but not even a single spore had dropped to make any kind of print. Needless to say, I didn’t eat them, but then I couldn’t anyway – maggot munchies anyone!?

There should be more elsewhere or on the way soon. They can be found in small groups, and interestingly have some biological link with Ceps (Boletus edulis), so take a look around to see if there are any nearby. Good luck…

Miller mushroom - Clitopilus prunulus

The Miller (Clitopilus prunulus). Notice the wavy, irregular shape of the cap.

Miller ID table

Author:
• Saturday, August 06th, 2011

The summer days so far have been a concoction of a few showery spells, the odd storm and quite a few blazing hot stretches. So even though it has been drier out there in the woods I still venture out. And today I was happy to find a great Bolete specimen.

Boletus badiusThe Bay Bolete (Boletus badius or Xerocomus badius) is one of the more common Boletes and fortunately one of the more tasty ones too. It can be found in all kinds of mixed woodland and has a season from July to November. So I was extra to happy to find one relatively early in the season.

Confusion with Cep or Penny Bun (Boletus edulus) and even the Suede Bolete (Boletus subtomentosus) is understandable, but the Cep’s pores do not turn blue/green on handling. The Suede Bolete does have blueing, but the velvety feel of the cap differs to the smoothness of the Bay Bolete.

Appearances (especially in size) can differ greatly from one Bay Bolete to another – Where they grow is one factor to consider. At first glance they look uncannily like Ceps when growing amongst pine needles on the woodland floor. When found growing in tall grass, they tend to have thinner and/or longer stems (and sometimes a slightly viscid cap) – just like this one here…

The cap can range in size from 4 – 14cm in width, the specimen shown here was roughly 11cm and was a lovely ochre brown colour, smooth to the touch but slightly sticky when wet. It’s stem which is streaked with the same colour as the cap, is cylindrical and smooth. It can grow up to 12.5cm and the thickness can range from 0.8 – 4cm.

Don’t miss out on the chance to grab a few as they’re great mushrooms to eat. It has a pleasant mushroom-like taste (smells mildly mushroomy too), and are especially more palatable when younger as the flesh is firmer. They are also good for drying too.

I’m sure more and more will pop up as the mushroom season starts to kick in. Enjoy…

Boletus badius

The Bay Bolete - Notice the blue brusing on the pores when handled, and the slight blueing in flesh just above the tubes when cut in half.

Bay Bolete ID

 

Boletus badius

This Bay Bolete is growing in the middle of the woods. Notice the shorter/thicker stem.

Author:
• Thursday, February 03rd, 2011

I often hear from my friends various stories from their travels in these winter months. They sometimes stumble across ‘small and brown mushrooms’ – “What are they?” they would shout! Without really being there, that was really quite a tough question!

Winter Twiglet Mushroom (Tubaria hiemalis)Small and brown mushrooms usually mean ‘knightmare identification’ to most people. But if it’s a winter mushroom (ie. January/February) I at least have the advantage of elimination.

Apart from the Velevet Shank mushroom, there’s really not much out there this time of year. But there are still quite a few typical ‘mushroom-shaped’ species scattered around (ie. not a bracket fungus).

And recently I myself have come across a certain small brown species, found in mid-january. They were growing in abundance along the side of a grassy woodland path, among the dead leaves and general wood mulch.

Mushrooms!? Ground mushrooms this time of year!? What’s going on? Yes, to be fair, it’s not your typical find and I was keen to fathom out what on earth they were.

As you’ve probably guessed, these mushrooms were new to me, but I always entertain myself in the process of identification (I know I should get out more …but I already was!) Anyway, after much research – both online and churning through my extensive literature – I learned I was dealing with the ‘Tubaria’ group of fungi (in the family of ‘Cortinariaceae’ to be precise!)

Many books out there (even some of the heavyweight ones) do not not include many from the Tubaria group of mushrooms. But luckily, after a lot of cross referencing, I believe I’m dealing with Tubaria hiemalis (Winter Twiglet) – one of the more common species which grows from September to February. And before you ask – No, it’s not edible! Not poisonous, but simply tastes bad. Shame!

Well, there you go. You may see some scattered around the country side or near your home even. Key identification info and characteristics can be seen at the end of this post in the ‘Quick ID notes’.

Winter Twiglet (Tubaria hiemalis)

These older specimens of the Winter Twiglet grow from late autumn through winter to early spring in woodland debris/mulch. The caps of younger specimens appear more uniformly round, and almost balled shaped, sprouting from the ground, when very young.

Winter Twiglet Identification Chart

Author:
• Tuesday, August 31st, 2010

It’s a Sunday afternoon and I pass by a grass verge near my house. My heart jumps at the sight of a huge cluster of (what seem to be) Horse mushrooms or possibly Field mushrooms.  I was without a basket or bag so like a kid in a sweet shop I scooped up a good share, leaving some to drop their spores.

But my dreams of a nice fry up or even a creamy mushroom soup are soon quaffed because I suddenly realise these mushrooms are not what they appear to be. I wait until I get home around the corner to double check. Read on…

Agaricus xanthodermusI’m not surprised at all that the Yellow Stainer (Agaricus xanthodermus) is responsible for the most cases of mushroom poisoning in this country. Although this evil twin of our favourite field, wood and Horse mushrooms is not deadly it can keep you in the loo for longer than you normally do! Gastric symptoms can persist for up to 24 hours. Fortunately I have not been caught out yet, but some people after consumption usually get away with only mild upset or sometimes have no reaction at all. My Uncle once told me “Ooh, I don’t get along with those Yellow Stainers – don’t like ‘em” . Let’s hope that it was only his palette they offended – I didn’t ask!

So how on earth can I identify this poisonous peril when compared to a Horse mushroom? I hear you all cry! (see also update note below)*

Don’t rely on the ‘overall look’. They differ in colour from pure white to brown/grey, scaly and smooth, tall and short and so on. Horse mushrooms can display some yellow colour on their cap and stem – so if you do see some yellow it’s not always a bad thing.

Both the Horse Mushroom and Yellow Stainer ‘bruise’ yellow (There’s hardly any yellow about the Field mushroom). But the Yellow Stainer has a stronger chromium yellow once bruised. If you rub the cap with your thumb, there will be a very noticeable colour change. But the crunch test for me is at the very base. Take a knife to the very bottom of the stem (the base is more bulbous than the others) and cut in half (see picture below). If the colour changes to a vivid yellow, then you’ve got yourself a Yellow Stainer. Horse and Field mushrooms do not stain at the base like this.

Other good ID tips are:
1. The smell is an unpleasant (phenol/inky smell more apparent when being cooked)
2. The ring on the stem is large and floppy.
3. Before the veil drops it does not have the ‘cogwheel’ pattern like the Horse Mushroom.
4. Gills when very young are white unlike the Horse and Field mushrooms which are pink

In addition to point 3 – if you’re new to collecting mushrooms, avoid very young specimens as they also can be confused with much more poisonous (even deadly) young toadstools.

The Yellow Stainer

Horse and Field Mushroom lookalike - The Yellow Stainer

Large ring of Yellow Stainer mushroom

On open caps: The ring on the Yellow Stainer is noticably large and floppy. The Field Mushroom's ring is a fine torn frill. The Horse Mushroom's ring is formed of a double membrane. The lower part is 'star shaped'

*Update Note (Sep 2011): I’m still in a quandry as if to what I found was possibly ‘Agaricus pilatianus’ which is extemely similar to the Yellow Stainer (and in the same family) but has no authenticated recording in the UK and is rare in mainland Europe**. The cloudy brown cap and mature ‘chocolate’ coloured gills (see above middle-right picture) are two good markers. It poisons in the same way as the Yellow Stainer, if not more so. So ‘either/or’ it is simply best avoided. Bright yellow mean Bad news…

** Reference: Roger Phillips Mushrooms book 1996

Quick ID checlist for Agaricus Xanthodermus.