On the way there, at the Salisbury's in Swansea I found Melanoleuca, below.
In the car park at Gethin there was a large fungus growing on birch. It's one of the Inonotus family, possibly Inonotus radiatus/Alder Bracket, which also grows on birch like this one was. This genus of fungus often exudes liquid in humid weather, rather like Postia stiptica/Bitter bracket. It looks like it's sweating.
It's often in clusters and usually found growing on wood and fallen branches of broad leaved trees.
When picking mushrooms it's important to try and get under the stalk so the base can be examined and as importantly see what the mushroom is growing on because it help determine a species like Pluteus which grows on wood or wood debris or specific species like Mycena for example.
The best find of the day can be seen below.
This fungus however was not growing on any vegetation. It was sprouting from the body of an insect. It's a Cordycep; a particular type of fungi that attacks insects. The fungi enters the body and replaces the insects insides with its mycelium, the fruit body then emerges from the body.
This one is Cordyceps militaris/Scarlet Caterpillarclub and lives on dead larvae and pupae of butterflies and moths.
Below is fungi that grows on wood. Exidia glandulosa (= E. truncata)/Witches Butter. If you click on the photo, you may see the warty surface more clearly. The photo has changed the colour somewhat; it's usually blackish brown to black. The fruitbody is cushion shaped with small warts on the underside surface (which is in the photo). It's finely granular on the upper surface.
Leratiomyces ceres (=Stropharia aurantiaca)/Redlead Roundhead
Tricholoma terreum/Grey Knight
Cordyceps militaris/Scarlet CaterpillarclubAmanita rubescens/The Blusher
Laetiporus sulphureus/Chicken of the Woods or Sulphur Polypore
Hypholoma fasciculare/Sulphur Tuft
Piptoporus betulinus/Birch Polypore or Razorstrop Fungus
Schizopora paradoxa/Split Porecrust
Panellus stipticus/Bitter Oysterling
Crepidotus variabilis/Variable Oyterling
Leucopaxillus giganteus/Giant Funnel
Russula ochroleuca/Ochre brittlegill
Mycena stylobates/Bulbous Bonnet
Mycena galericulata/Common Bonnet
Rickenella fibula/Orange Moss Cap
Ascocoryne sarcoides/Purple Jellydisc
Exidia glandulosa/Witches Butter
Armillaria mellea/Honey Fungus
Stereum hirsutum/Hairy Curtaincrust
Stereum rugosum/Bleeding Curtaincrust
Laccaria laccata/The Deceiver
Xylaria hypoxylon/Candlesnuff Fungus or Stag's Horn
Daldinia concentrica/Cramp Balls or King Alfreds Cakes
Inonotus radiatus/Alder Bracket?
Tremella mesentericaPluteus cervinus
+ Four unidentified species