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Hypomyces lateritius

Ochre Gillgobbler

Hypomyces lateritius — 2026-09-19
Scientific identification
Hypomyces lateritius (Fr.) Tul. & C. Tul.
Family
Hypocreaceae
Class
Sordariomycetes
Genus
Hypomyces

Names across languages

  • English: Ochre Gillgobbler
  • German: Steinreizker-Kernpilz
  • Finnish: Rouskunriesa
  • Estonian: Valkjas üleniidik
  • Russian: Гипомицес кирпично-красный

The scientific profile

From the latest record: 2026-09-19.

Hymenium

Perithecia immersed to partly exposed in the subiculum, dark amber to reddish-brown, appearing as minute pimples over the infected surface

Body

Dense coating covering and deforming the host hymenium; initially white to lemon-yellow, becoming buff, ochre, orange-brown and finally brick-red to reddish-brown

Description

Spore mass hyaline; mature infected surface ochre to brick-red

Ecology

Fungicolous parasite mainly on Lactarius species, especially orange-milkcaps; covers undeveloped gills; summer to autumn

Edibility

Edibility depends on the correctly identified host mushroom

Fruit body

Fruiting layer thin, spreading across substantial portions or nearly all of the host hymenium

Dimensions

Perithecia ~300–470 × 170–360 µm

Description

Parasitized host becomes firm, deformed and partially mummified

Chemical reactions

KOH subiculum negative; perithecia becoming yellowish

Microscopy

Ascospores fusiform to lanceolate/naviculate, finely verrucose, aseptate, ~15–27 × 3.5–5.5 µm, with conspicuous acute apiculi at both ends; asci cylindrical, 8-spored, ~90–150 × 4–8 µm; anamorph forms subglobose aseptate conidia ~5–6.5 × 4.5–6 µm

Overview

Brick-red gill parasite deforming and mummifying Lactarius fruit bodies

1860). Annls Sci. Nat., Bot., Sér. 4 13: 11.

Field encounters

19/Sep/2026, 3:16 PM

Nedrema LKA, Pärnu county, Eesti

Wet wooded meadow nature reserve, on Lactarius deliciosus mushroom body

58°32'19.7"N 24°04'14.5"E

🌡️ 16°C ☁️ Overcast 💨 Wind 220° SW->NE, 28 km/h

Original Instagram post

Source hashtags

#hypomyceslateritius #mushroomphotos #fungimacro #ochregillgobbler #naturephotography

Back to the collection · Photography and field notes by @fungarium.info