Larch bolete or Rosy spike
How they differ, how to recognize them and which is more dangerous — a mushroom comparison
The short answer
Larch bolete and Rosy spike are similar species that can be mixed up while foraging. The main visible difference: use: Larch bolete — cook fresh, pickling, drying, salting, Rosy spike — cook fresh, pickling. The mushrooms also differ in the following features: size, cap color, hymenophore.

Larch bolete
Suillus grevillei

Rosy spike
Gomphidius roseus
📊 Comparing characteristics
| Characteristic | Larch bolete | Rosy spike |
|---|---|---|
| Edibility class | Larch bolete Edible | Rosy spike Edible |
| Season | Larch bolete SummerAutumn | Rosy spike SummerAutumn |
| Use | Larch bolete Cook freshPicklingDryingSalting | Rosy spike Cook freshPickling |
| Size | Larch bolete Medium (5–15 cm) | Rosy spike Small (up to 5 cm) |
| Cap color | Larch bolete YellowOrange | Rosy spike PinkRed |
| Cap shape | Larch bolete Convex | Rosy spike Convex |
| Cap surface | Larch bolete Slimy | Rosy spike Slimy |
| Taste | Larch bolete Mild | Rosy spike Mild |
| Smell | Larch bolete Pleasant | Rosy spike Pleasant |
| Flesh color change | Larch bolete Reddening | Rosy spike Reddening |
| Hymenophore | Larch bolete Pored | Rosy spike Gilled |
| Stem | Larch bolete Central | Rosy spike Central |
| Ring (veil) | Larch bolete Ring present | Rosy spike Ring remnants |
| Volva | Larch bolete No volva | Rosy spike No volva |
| Substrate | Larch bolete Soil | Rosy spike Soil |
| Nutrition type | Larch bolete Mycorrhizal | Rosy spike Parasite |
| Partner trees | Larch bolete Larch | Rosy spike PineSpruce |
📅 Seasonality
Larch bolete
Fruiting season
June – October
Rosy spike
Fruiting season
August – October
🔬 Morphology
Cap
Larch bolete
Cap 4–10 cm (sometimes up to 15), hemispherical in young mushrooms, then cushion-shaped, almost flat in old ones. Color bright yellow, lemon-yellow, golden-orange, less often rusty brown. The surface is very sticky and shiny — in wet weather it looks literally lacquered. The skin peels off easily and often stretches into strips.
Rosy spike
Cap 2-6 cm across; hemispherical with an inrolled margin when young, later convex to flat with a shallow central depression. Color bright pink, coral-pink, salmon-pink: distinctive and unmatched among the spikes. In old mushrooms it fades to pale pink or ochre-pink. Surface very slimy, sticky; the skin peels off easily.
Hymenophore
Larch bolete
Tubes adnate to the stem at first, then notched. Yellowish when young, later grayish- or olive-yellow. Pores small and angular. When pressed they turn pinkish, then brown — a characteristic reaction. In young mushrooms they are covered by a yellowish membranous veil.
Rosy spike
Gilled hymenophore; gills decurrent, distant, waxy, thick. In young mushrooms whitish, later darkening to gray-black, almost black because of the dark spore print. Spore print dark brown to black. Decurrent gills plus darkening are the diagnostic features of the genus Gomphidius.
Stem
Larch bolete
Stem 4–12 cm tall, 1–3 cm thick, cylindrical or slightly widening toward the base. Yellow above, brownish below the ring, with small rusty dots. The ring is white or yellowish, membranous, and breaks down quickly — in mature mushrooms it’s often gone or only a narrow band remains.
Rosy spike
Stem 3-7 cm tall, 0.8-1.5 cm thick, cylindrical, thinner and shorter than in other spikes. Color whitish to pale pink at the top, more intensely pink lower down. A ring zone from the veil in the upper part, faint. The stem base often has whitish mycelium.
Flesh
Larch bolete
Flesh yellow, soft, watery in mature mushrooms. When cut it turns slightly pinkish in the cap, and sometimes a bit greenish in the stem. The texture is slimy-fibrous.
Rosy spike
Flesh thin, whitish to pale pink, soft. When cut it turns slightly wine-pink. Smell faint, pleasantly mushroomy.
Smell
Larch bolete
Smell faint, mushroomy, with a barely noticeable resinous note. Taste mild, not bitter.
Rosy spike
Faint, pleasantly mushroomy, with no distinctive notes.
📍 Habitats
Larch bolete
Rosy spike
👀 Similar mushrooms — don't mix them up!
❓ Frequently asked questions
Can Larch bolete and Rosy spike be mixed up?
How to tell Larch bolete from Rosy spike?
Is Rosy spike edible?
When do Larch bolete and Rosy spike grow?
Sources
- [1]Вікіпедія (українська)
- [2]Атлас грибів України, Зеров Д.К. (1979)
- [3]MycoBank Database
- [4]Index Fungorum
- [5]GBIF
- [6]iNaturalist Ukraine