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Suillus granulatus

granulated bolete

Suillus granulatus — 2026-09-03
Scientific identification
Suillus granulatus (L.) Roussel
Family
Suillaceae
Class
Agaricomycetes
Genus
Suillus

Names across languages

  • English: granulated bolete
  • German: Körnchen-Röhrling
  • Finnish: Jyvästatti
  • Estonian: Lambatatik
  • Russian: Маслёнок зернистый

The scientific profile

From the latest record: 2026-09-03.

Hymenium

Pores small, round to slightly angular; pale yellow to lemon-yellow, becoming ochre-yellow with age; young pores characteristically exude milky-white droplets that dry brownish

Cap

Hemispherical to convex when young, later broadly convex; smooth, strongly viscid and sticky when moist; cinnamon-brown, orange-brown to yellow-brown, often paler toward margin

Hymenium Attachment

Adnate to slightly decurrent

Stipe

Cylindrical, solid, pale yellow to straw-coloured; covered with fine yellowish to brown glandular granules; ring absent; basal mycelium white

Spore print

Spore print ochre-brown to cinnamon-brown

Ecology

Mycorrhizal with pines, especially two-needled pines such as Scots pine; alone, scattered or gregariously; coniferous forests, parks and grassy places beneath pines; summer to late autumn

Edibility

Edible after thorough cooking; mediocre quality, cap skin often removed

Fruit body

Fruit body medium; stipe ~4–10 cm long and ~1–2 cm thick

Dimensions

Cap ∅ ~4–10 cm

Flesh

Pale whitish-yellow, soft, unchanging when cut

Chemical reactions

KOH olive-grey on cap, pink to reddish-lilac on flesh; FeSO₄ bluish-grey on cap and olive-grey on flesh

Odour

Mild, indistinct

Taste

Mild

Microscopy

Spores boletoid-fusiform to elongated-ellipsoid, smooth, ~7–10 × 2.5–3.5 µm; basidia 4-spored; clamp connections absent

Overview

Ringless sticky pine bolete with milky droplets and granular stipe

1796). Fl. Calvados: 34.

Field encounters

03/Sep/2026, 5:49 PM

Soodla forest, Anija, Harju, Eesti

Mixed (conifer dominant) forest woodland edge grassland (Pilosella sp., Vaccinum sp.), in sandy mossy soil

59°23'14.7"N 25°23'38.1"E

🌡️ 17°C ⛅ Partly sunny 💨 Wind 240° WSW->ENE, 20 km/h

Original Instagram post

03/Aug/24, 5:16 PM

Treppoja Cascade, Kloogaranna, Harjumaa, Estonia

In mixed forest, near pine tree, in pine needles soil

🔆 Forest semishade, sunny still weather

Original Instagram post

30/07/23, 3:47 PM

Treppoja Cascade, Kloogaranna, Harjumaa

In pine and spruce forest, in moss and grass

🔆 Forest semishade, partial overcast

Original Instagram post

Source hashtags

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