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

Bulbous honey fungus
Armillaria gallica
📊 Comparing characteristics
| Characteristic | Dark honey fungus | 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
September – November
Bulbous honey fungus
Fruiting season
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
Bulbous honey fungus
👀 Similar mushrooms — don't mix them up!
❓ Frequently asked questions
Can Dark honey fungus and Bulbous honey fungus be mixed up?
How to tell Dark honey fungus from Bulbous honey fungus?
Is Bulbous honey fungus edible?
When do Dark honey fungus and Bulbous honey fungus grow?
Sources
- [1]Вікіпедія (українська)
- [2]Атлас грибів України, Зеров Д.К. (1979)
- [3]MycoBank Database
- [4]Index Fungorum
- [5]GBIF
- [6]iNaturalist Ukraine