Fungi encyclopedia
A reference for the fungi you actually find
Each entry describes one species the way you meet it in the field — the cap and its surface, what sits underneath, the stipe and its base, the spore print colour, the substrate it fruits from, and the species most often confused with it.
Admirable Bolete
Boletes
A rich maroon-brown bolete of Pacific Northwest hemlock forest that fruits on and around well-rotted conifer logs, with bright yellow pores and a stout reddish-brown stipe.
Spore print · Olive-brown
Agarikon
Polypores
A large, chalky white, hoof-shaped to column-like perennial bracket found high on old-growth conifers. Its soft, crumbly white interior and cracked outer surface set it apart from every other large conk.
Spore print · White
Alder Bolete
Boletes
A soft, pale bolete restricted to damp alder carr, with shallow decurrent yellow pores that instantly bruise blue-black. Fruitbodies are often lopsided and clustered.
Spore print · Olive to yellowish-brown
American Caesar's Mushroom
Gilled
A brilliant red-to-orange Amanita of eastern North American oak and pine woods, with yellow gills, a yellow-orange skirt ring and a thick white sac at the base.
Spore print · White
American Matsutake
Gilled
A heavy white mushroom with cinnamon-stained cap fibrils, notched white gills and a thick sheathing ring, pushing up through sandy conifer duff. Its powerful spicy aroma is unmistakable in the field.
Spore print · White
Amethyst Deceiver
Gilled
A small woodland mushroom that is intensely violet when fresh and moist, with thick, widely spaced gills of the same colour and a fibrous, twisted stem. It fades so dramatically as it dries that it can look like a completely different species.
Spore print · White
Anemone Stinkhorn
Stinkhorns
A scarlet stinkhorn that hatches from a white egg into a starfish-like ring of forked arms surrounding a disc of dark, fly-attracting slime.
Spore print · Not applicable (olive-brown gleba)
Aniseed Funnel
Gilled
An unmistakable woodland funnel with a soft blue-green cap and a powerful aniseed scent, growing scattered through autumn leaf litter under broadleaf trees.
Spore print · Pale cream to very pale pink
Anther Smut
Other Fungi
A smut of the pink family that replaces a flower's pollen with a dusty violet-brown spore mass, turning campion anthers into spore dispensers carried by pollinating insects.
Spore print · Not applicable (violet-brown spore mass)
Artist's Conk
Polypores
A large perennial shelf fungus with a hard, lumpy grey-brown crust and a chalk-white pore surface that instantly bruises dark brown where scratched, the feature behind its name.
Spore print · Brown
Ash-tree Bolete
Boletes
An unusual bolete found only near ash trees, with an off-centre stipe and a shallow, vein-like yellow pore surface that radiates outward like gill folds.
Spore print · Olive-brown to yellow-brown
Aspen Scaber Stalk
Boletes
A North American scaber stalk of aspen groves, with an orange-brown cap, dark scabers even when young, and pale flesh that greys and takes on lilac tones when cut.
Spore print · Ochre-brown
Azalea Leaf Gall
Other Fungi
A basidiomycete that converts azalea leaves and buds into thick, fleshy, pale green to pink bladder-like galls. Mature galls develop a chalky white bloom of basidiospores before browning and hardening.
Spore print · White (surface bloom)
Bamboo Fungus
Stinkhorns
A tropical stinkhorn whose white spongy stalk carries a pitted, slime-covered conical head and, beneath it, a spectacular lacy net that hangs down like a skirt. It erupts from a soft white egg in bamboo litter.
Spore print · Not applicable — olive-brown spore slime
Banded Mottlegill
Gilled
A widespread mottlegill of compost heaps and manured ground, recognised by a hygrophanous reddish-brown cap that dries with a darker band around the margin and a jet-black spore print.
Spore print · Black
Bare-toothed Brittlegill
Gilled
A firm, muted pinkish-brown brittlegill whose cap skin shrinks back from the rim to expose a fine pale line of gill ends. It partners with oak and beech on well-drained soils.
Spore print · White to very pale cream
Bay Bolete
Boletes
A rich bay-brown bolete whose lemon-yellow pores flush blue-green within seconds of being touched. The stipe is brown-streaked and lacks the raised netting of the King Bolete.
Spore print · Olive-brown
Bearded Fieldcap
Gilled
A firm, pale cream fieldcap of grassy places whose cap often cracks in dry weather and hangs shreds of white veil from the margin, giving it a bearded look.
Spore print · Dull brown to snuff brown
Bearded Milkcap
Gilled
A small pale milkcap of sandy birch ground, recognised by its almost unzoned whitish-pink cap, finely downy inrolled margin and unchanging white latex.
Spore print · Cream
Beech Milkcap
Gilled
An abundant beechwood milkcap with a slimy olive-grey cap patterned with dark, droplet-like concentric spots. Its copious white latex dries grey on the gills.
Spore print · White to pale cream
Beechwood Sickener
Gilled
A compact scarlet brittlegill restricted to beech woods, distinguished from its conifer relatives by firmer flesh, a matt cap whose skin peels only part-way, and crowded white gills.
Spore print · White
Beefsteak Fungus
Polypores
A soft, moist, blood-red tongue-shaped bracket on oak, unique among polypores in having individually separate tubes rather than a fused pore layer.
Spore print · Pale pinkish-brown
Berkeley's Polypore
Polypores
One of the largest fungi of eastern North American forests, forming a massive rosette of thick cream to tan fans with coarse angular pores at the base of oaks.
Spore print · White
Big Blue Pinkgill
Gilled
A stout, deep steel-blue pinkgill of ancient calcareous grassland, with white gills turning pink and a thick blue-tinged stipe.
Spore print · Pink
Birch Bolete
Boletes
A tall, slender bolete with a dull brown cap, off-white pores and a long white stipe roughened by vertical rows of small dark scabers. It grows only with birch.
Spore print · Snuff-brown to ochre-brown
Birch Brittlegill
Gilled
A small, delicate brittlegill with a pale rosy or almost white cap, found only with birch on wet acid ground. Its thin flesh and grooved margin make it one of the frailest of the genus.
Spore print · White
Birch Mazegill
Polypores
A tough zoned bracket that looks like a Trametes from above but carries genuine radiating gill plates on its underside instead of pores.
Spore print · White
Birch Milkcap
Gilled
A small tawny orange-brown birch associate with a matt, slightly wrinkled cap and a small pointed umbo. Its scanty white latex slowly turns yellow when smeared on a white tissue.
Spore print · Pale cream
Birch Polypore
Polypores
A smooth, pale, rubbery bracket that grows almost exclusively on birch, recognised by its rounded kidney shape, thick inrolled margin and fine white pore surface.
Spore print · White
Bitter Bolete
Boletes
A robust brown-capped bolete with white pores that flush pink with age and a pale stipe carrying a bold dark brown network. Widespread in conifer and mixed woodland.
Spore print · Pinkish-brown
Black Knot
Other Fungi
A twig-inhabiting ascomycete of Prunus trees that turns branches into hard, coal-black, corky swellings several centimetres long. The knots are perennial and enlarge each year along the stem.
Spore print · Not applicable
Black Morel
Morels & Allies
A conical spring morel whose pits are arranged in vertical ladder-like rows between ridges that darken to grey, olive or black. Like all true morels it is hollow throughout with the head fused to the stalk.
Spore print · Cream to pale yellow
Black Trumpet
Other Fungi
A thin, hollow, vase-shaped fungus in dark grey to almost black, with a smooth or faintly wrinkled outer fertile surface and no true gills. It grows in dense troops in deep leaf litter, where its colouring makes it remarkably hard to see.
Spore print · White to pale cream
Black Velvet Bolete
Boletes
A dramatic bolete with a velvety black cap and stipe over a white pore surface. Cut flesh flushes pink then slowly turns grey to black.
Spore print · Pinkish-brown
Black Witches' Butter
Jellies
A gelatinous black fungus forming rubbery cushions and blobs that fuse into wrinkled, brain-like crusts on dead hardwood branches. It swells in wet weather and shrinks to a thin black scab when dry.
Spore print · White
Black-footed Polypore
Polypores
A stalked polypore with a polished chestnut-brown, funnel-shaped cap and minute white pores, recognised instantly by the inky black lower half of its stem.
Spore print · White
Black-staining Polypore
Polypores
A large clustered rosette of grey-brown fans at the foot of hardwood trees whose white pore surface and pale flesh blacken within minutes of being touched.
Spore print · White
Blackening Brittlegill
Gilled
A heavy, thick-fleshed brittlegill with unusually distant, fat gills whose white flesh reddens then slowly turns grey and finally coal-black, leaving charred-looking husks that persist for months.
Spore print · White
Blackening Waxcap
Gilled
A sharply conical orange to scarlet waxcap that turns inky black wherever it is bruised or as it ages, ending as a wholly charred-looking fruit body.
Spore print · White
Bleeding Tooth Fungus
Toothed
A knobbly, cream-white tooth fungus whose growing surface exudes vivid blood-red droplets, fruiting in conifer duff and often fusing with its neighbours into irregular crusted masses.
Spore print · Brown
Bloody Brittlegill
Gilled
A firm pine-wood brittlegill with a matt blood-red cap and a stipe usually flushed the same colour. Its slightly decurrent cream gills and dry cap skin set it apart from other red species.
Spore print · Pale cream
Bloody Milkcap
Gilled
A pine-associated milkcap of southern limestone woodland whose flesh releases dark blood-red latex the instant it is cut, with no orange phase at all.
Spore print · Pale cream to buff
Blue Band Brittlegill
Gilled
A modestly sized conifer brittlegill with a delicately lilac to azure cap dusted with a fine bloom, often paler or ochre-tinted at the centre. Its gills and spore deposit stay close to white.
Spore print · White to palest cream
Blue Cheese Polypore
Polypores
A small, soft, hairy white bracket that develops distinct blue-grey tints, especially on the pore surface and where bruised, growing in tiers on dead conifer wood.
Spore print · Pale bluish white
Blue Edge Pinkgill
Gilled
A small dark blue-black grassland pinkgill whose pale gills carry a finely serrated blue-black edge visible with a hand lens.
Spore print · Pink
Blue Pinkgill
Gilled
A small but unmistakable New Zealand mushroom with an intensely blue, conical, pointed cap and pinkish gills that yield a pink spore print. It grows singly or in small groups in wet native forest litter.
Spore print · Pink
Blue Spot Knight
Gilled
A silky, pure white woodland knight whose cap and stipe base develop distinctive blue-green or pinkish spots and streaks with age. The white sinuate gills and complete absence of a volva place it firmly in Tricholoma.
Spore print · White
Bluing Bolete
Boletes
A pale, shaggy-capped bolete of sandy heathland whose every surface flushes an intense cornflower blue within seconds of being touched or cut.
Spore print · Pale straw yellow