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Dark honey fungus or Bulbous honey fungus

How they differ, how to recognize them and which is more dangerous — a mushroom comparison

The short answer

Dark honey fungus and Bulbous honey fungus are similar species that can be mixed up while foraging. The main visible difference: season: Dark honey fungus — autumn, Bulbous honey fungus — summer, autumn. The mushrooms also differ in the following features: cap color, cap surface, ring (veil).

Dark honey fungus (Armillaria ostoyae)

Dark honey fungus

Armillaria ostoyae

Conditionally edibleNot reviewed by an editor
Bulbous honey fungus (Armillaria gallica)

Bulbous honey fungus

Armillaria gallica

Conditionally edibleNot reviewed by an editor

📊 Comparing characteristics

Comparison of characteristics: Dark honey fungus and Bulbous honey fungus
Edibility class

Dark honey fungus

Conditionally edible

Bulbous honey fungus

Conditionally edible
Season

Dark honey fungus

Autumn

Bulbous honey fungus

SummerAutumn
Use

Dark honey fungus

Cook freshPicklingSalting

Bulbous honey fungus

Cook freshPicklingSalting
Size

Dark honey fungus

Medium (5–15 cm)

Bulbous honey fungus

Medium (5–15 cm)
Cap color

Dark honey fungus

BrownDark brownYellow

Bulbous honey fungus

YellowBrownOrange
Cap shape

Dark honey fungus

ConvexFlat

Bulbous honey fungus

ConvexFlat
Cap surface

Dark honey fungus

Scaly

Bulbous honey fungus

ScalyFibrous
Taste

Dark honey fungus

Mild

Bulbous honey fungus

Mild
Smell

Dark honey fungus

Pleasant

Bulbous honey fungus

Pleasant
Flesh color change

Dark honey fungus

No change

Bulbous honey fungus

No change
Hymenophore

Dark honey fungus

Gilled

Bulbous honey fungus

Gilled
Stem

Dark honey fungus

Central

Bulbous honey fungus

Central
Ring (veil)

Dark honey fungus

Ring present

Bulbous honey fungus

Ring remnants
Volva

Dark honey fungus

No volva

Bulbous honey fungus

No volva
Substrate

Dark honey fungus

Living treeDead wood

Bulbous honey fungus

Dead woodLiving tree
Nutrition type

Dark honey fungus

ParasiteSaprotroph

Bulbous honey fungus

SaprotrophParasite
Partner trees

Dark honey fungus

PineSpruceFir

Bulbous honey fungus

OakBeech

📅 Seasonality

Dark honey fungus

Fruiting season

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

September – November

Bulbous honey fungus

Fruiting season

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

August – October

🔬 Morphology

Cap

Dark honey fungus

The cap of dark honey fungus is 4 to 10, occasionally up to 15 centimeters across. When young it is hemispherical or convex-bell-shaped; with age it opens up to flat with a small bump. The surface is covered with conspicuous dark — brown to blackish — flattened scales, especially dense in the center. The color is yellowish brown, honey brown or dark reddish, darker than honey fungus. The dark scaly cap is a characteristic feature of the species.

Bulbous honey fungus

The cap of the bulbous honey fungus reaches 3 to 10 centimeters in diameter. When young it is convex-bell-shaped; with age it opens out to flat. The surface is covered with small, thin fibrous scales, especially in the center, and becomes smoother in wet weather. The color is yellowish brown, honey brown or ocher, darker in the center; the margin is paler, often with a reddish tinge. In dry weather the color fades noticeably.

Hymenophore

Dark honey fungus

The hymenophore is gilled. The gills are whitish or cream, developing yellowish-brown spots with age; they are attached to the stem or run slightly down it. The spore print is white. Pale gills that turn brown with age, together with the ring on the stem, help you recognize dark honey fungus.

Bulbous honey fungus

The hymenophore is gilled. The gills are whitish or cream, developing yellowish-reddish spots with age, attached to the stem or running slightly down it. The spore print is white. Pale gills that turn brownish with age, together with the weak cobwebby ring, help you recognize this species.

Stem

Dark honey fungus

The stem is cylindrical, 6 to 15 centimeters tall, fairly firm and fibrous, often with a thickened base. Its defining feature is a well-developed, sturdy, whitish ring in the upper part, often with brown scales along the edge. Above the ring the stem is pale; below it, reddish brown and fibrous. Several stems often grow fused together in a cluster. There is no volva.

Bulbous honey fungus

The stem is the most distinctive feature of the species: cylindrical, with a noticeably thickened, bulbous base, 5 to 12 centimeters tall. It is yellowish brown at the top and paler toward the bottom. The ring is weak, cobwebby-membranous, yellowish, and often disappears quickly, leaving only a fibrous band. It is precisely the swollen stem base that gave the mushroom its folk name, «thick-legged». There is no volva.

Flesh

Dark honey fungus

The flesh is whitish, fairly firm in the cap and fibrous and tough in the stem. It barely changes color when cut. The taste is mild and pleasant, but because the raw mushroom tends to cause stomach upset, it must always be boiled thoroughly. Young caps are chosen for the table, while old fibrous stems are usually discarded.

Bulbous honey fungus

The flesh is whitish, rather thin in the cap and fibrous in the stem. It barely changes color when cut. Raw flesh tastes acrid, so the mushroom must always be thoroughly boiled before eating, after which the taste becomes mild. The quality of the flesh is somewhat lower than in honey fungus, so young caps are chosen for the table.

Smell

Dark honey fungus

The smell is faint, pleasant and mushroomy, with no sharp notes. Aroma is not a defining feature, so for identification rely on the dark scaly cap, the ring on the stem, growth in dense clusters on conifer wood and the autumn season.

Bulbous honey fungus

The smell is faint, pleasant, somewhat sweetish, sometimes with a cheesy hint. The scent is not a defining feature, so for identification rely on the bulbous, swollen stem base, the weak cobwebby ring, the honey-colored scaly cap and its growth on the wood of broadleaf trees.

📍 Habitats

Dark honey fungus

Conifer forestMixed forest

Bulbous honey fungus

Deciduous forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Dark honey fungus and Bulbous honey fungus be mixed up?
Yes, they look so similar that people often mix them up. The season, cap color, cap surface help tell them apart.
How to tell Dark honey fungus from Bulbous honey fungus?
The main differences: season: Dark honey fungus — autumn, Bulbous honey fungus — summer, autumn; cap color: Dark honey fungus — brown, dark brown, yellow, Bulbous honey fungus — yellow, brown, orange; cap surface: Dark honey fungus — scaly, Bulbous honey fungus — scaly, fibrous. The full table of characteristics is higher up on this page.
Is Bulbous honey fungus edible?
Bulbous honey fungus — conditionally edible.
When do Dark honey fungus and Bulbous honey fungus grow?
Dark honey fungus — September–November; Bulbous honey fungus — August–October.

Sources

  • [1]Вікіпедія (українська)
  • [2]Атлас грибів України, Зеров Д.К. (1979)
  • [3]MycoBank Database
  • [4]Index Fungorum
  • [5]GBIF
  • [6]iNaturalist Ukraine