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

Suillus asiaticus
Suillus asiaticus

Hollow bolete
Suillus cavipes
📊 Comparing characteristics
| Characteristic | Suillus asiaticus | Hollow bolete |
|---|---|---|
| Edibility class | Suillus asiaticus Edible | Hollow bolete Edible |
| Season | Suillus asiaticus SummerAutumn | Hollow bolete SummerAutumn |
| Use | Suillus asiaticus Cook fresh | Hollow bolete Cook freshDryingPickling |
| Size | Suillus asiaticus Medium (5–15 cm) | Hollow bolete Medium (5–15 cm) |
| Cap color | Suillus asiaticus RedPinkBrown | Hollow bolete BrownYellowOrange |
| Cap shape | Suillus asiaticus ConvexFlat | Hollow bolete ConvexFlat |
| Cap surface | Suillus asiaticus ScalyFibrousSlimy | Hollow bolete ScalyFibrousDry |
| Taste | Suillus asiaticus Mild | Hollow bolete Mild |
| Smell | Suillus asiaticus Pleasant | Hollow bolete Pleasant |
| Flesh color change | Suillus asiaticus No change | Hollow bolete No change |
| Hymenophore | Suillus asiaticus Pored | Hollow bolete Pored |
| Stem | Suillus asiaticus Central | Hollow bolete Central |
| Ring (veil) | Suillus asiaticus Ring present | Hollow bolete Ring present |
| Volva | Suillus asiaticus No volva | Hollow bolete No volva |
| Substrate | Suillus asiaticus Soil | Hollow bolete Soil |
| Nutrition type | Suillus asiaticus Mycorrhizal | Hollow bolete Mycorrhizal |
| Partner trees | Suillus asiaticus Larch | Hollow bolete Larch |
📅 Seasonality
Suillus asiaticus
Fruiting season
July – September
Hollow bolete
Fruiting season
July – October
🔬 Morphology
Cap
Suillus asiaticus
The cap of Suillus asiaticus is 4 to 10 centimeters across. When young it is convex to hemispherical; with age it opens out flat. The surface is fibrous-scaly, sticky and slimy in wet weather, with veil remnants along the edge. The color is vivid — reddish-crimson, pinkish-red or brownish-red, with darker flattened fibrous scales. Its bright crimson color sets this species apart from the yellowish-brown slippery jacks.
Hollow bolete
The cap of the hollow bolete reaches 3 to 10 centimeters in diameter. When young it is convex-hemispherical; with age it opens out to flat, sometimes with a small umbo. The surface is the main difference from other Suillus species: it is dry, felty-scaly-fibrous, not slimy, often with veil remnants along the margin. The color is yellowish brown, reddish brown or chestnut, with darker, flattened fibrous scales.
Hymenophore
Suillus asiaticus
The spore-bearing surface is made of tubes. The tubes run noticeably down the stem (decurrent), with wide, angular, radially arranged pores resembling honeycomb, as in other larch boletes. They are yellow or golden-yellow, turning olive-yellow with age; they may brown slightly when damaged. Large, angular, decurrent pores are a hallmark of the genus. The spore print is olive-brown.
Hollow bolete
The hymenophore consists of tubes. The tubes run noticeably down the stem (decurrent), with wide, angular, radially arranged pores that resemble honeycomb. They are yellow or golden yellow, olive-yellow with age. The large, angular, decurrent pores set this species apart from the fine-pored Suillus species. The spore print is olive-brown.
Stem
Suillus asiaticus
The stem is cylindrical, 4 to 8 centimeters tall, yellowish-reddish, with a noticeable slimy or fibrous ring near the top — a remnant of the veil. Above the ring the stem is light yellow; below it, it matches the cap, with reddish fibers. There is no volva. The combination of a bright scaly cap, decurrent yellow pores, a ring and association with larch reliably identifies this species.
Hollow bolete
The stem is cylindrical, 4 to 8 centimeters tall, and its defining feature is the cavity inside, especially noticeable in mature mushrooms, which gave the species its name. In the upper part of the stem there is a noticeable fibrous ring — a remnant of the veil; above the ring the stem is yellowish, below it brownish red, matching the cap. There is no volva. The combination of a dry scaly cap, a hollow ringed stem and the link with larch reliably identifies this species.
Flesh
Suillus asiaticus
The flesh is yellowish or pale yellow, fairly soft and watery, and may turn slightly pink or brown when cut. The taste is mild, with no bitterness. Because of its watery texture, choose young, firm specimens for the table; its culinary value is modest, like that of other larch-loving Suillus.
Hollow bolete
The flesh is whitish or pale yellow, fairly soft; when cut, it barely changes color or turns slightly yellow. The taste is mild and pleasant, without bitterness. Because it tends to go soft, choose young, firm specimens for the table. Unlike slimy Suillus species, the dry cap is not sticky and does not need peeling.
Smell
Suillus asiaticus
The smell is faint, pleasant and typically mushroomy, with no sharp notes. Scent isn't a defining feature, so for identification rely on the bright reddish-crimson scaly cap, large decurrent yellow pores, the ring on the stem and its constant association with larch.
Hollow bolete
The smell is faint, pleasant, typically mushroomy, without sharp notes. The scent is not a defining feature, so for identification rely on the dry, scaly brown cap, the large decurrent yellow pores, the hollow ringed stem and the constant link with larch.
📍 Habitats
Suillus asiaticus
Hollow bolete
👀 Similar mushrooms — don't mix them up!
❓ Frequently asked questions
Can Suillus asiaticus and Hollow bolete be mixed up?
How to tell Suillus asiaticus from Hollow bolete?
Is Hollow bolete edible?
When do Suillus asiaticus and Hollow bolete grow?
Sources
- [1]Вікіпедія (українська)
- [2]Атлас грибів України, Зеров Д.К. (1979)
- [3]MycoBank Database
- [4]Index Fungorum
- [5]GBIF
- [6]iNaturalist Ukraine