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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)

Suillus asiaticus

Suillus asiaticus

EdibleNot reviewed by an editor
Hollow bolete (Suillus cavipes)

Hollow bolete

Suillus cavipes

EdibleNot reviewed by an editor

📊 Comparing characteristics

Comparison of characteristics: Suillus asiaticus and 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

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

July – September

Hollow bolete

Fruiting season

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

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

Conifer forestMixed forest

Hollow bolete

Conifer forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Suillus asiaticus and Hollow bolete be mixed up?
Yes, they look so similar that people often mix them up. The use, cap color, cap surface help tell them apart.
How to tell Suillus asiaticus from Hollow bolete?
The main differences: use: Suillus asiaticus — cook fresh, Hollow bolete — cook fresh, drying, pickling; cap color: Suillus asiaticus — red, pink, brown, Hollow bolete — brown, yellow, orange; cap surface: Suillus asiaticus — scaly, fibrous, slimy, Hollow bolete — scaly, fibrous, dry. The full table of characteristics is higher up on this page.
Is Hollow bolete edible?
Hollow bolete — edible.
When do Suillus asiaticus and Hollow bolete grow?
Suillus asiaticus — July–September; Hollow bolete — July–October.

Sources

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