27/Sep/25, 2:08 PM
Läiaküla raba, Tallinn, Harju, Eesti
Decidious boggy forest, on Alder hardwood branch
59°28'03.7"N 24°53'23.1"E
🌡️ 14°C 🌤️ Passing clouds. Wind 0° N->S, 13 km/h
Original Instagram postFuscoporia ferruginosa
rusty porecrust
- Scientific identification
- Fuscoporia ferruginosa (Schrad.) Murrill
- Family
- Hymenochaetaceae
- Class
- Agaricomycetes
- Genus
- Fuscoporia
Names across languages
- English: rusty porecrust
- German: Rostbrauner Feuerschwamm
- Finnish: Etelänkääpä
- Estonian: Roostepruun taelik
- Russian: Фускопория ржавая
The scientific profile
From the latest record: 2025-09-27.
Hymenium
Pores, small (often ~4–7 per mm), angular to hexagonal, initially pale but turning rusty-brown to cinnamon as spores mature
Cap
Bracket or crust form (resupinate or effused-reflexed), surface smooth to slightly tomentose, cinnamon to rusty brown, zonate in places
Hymenium Attachment
Poroid (underside of bracket), sometimes flush with substrate (crust)
Stipe
Absent (fungus grows directly attached to wood substrate)
Spore print
Spore print pale, slightly pinkish to white
Ecology
Saprotrophic (and wood-decay) fungus, causes white rot on dead hardwoods, occurs on branches, stumps, logs, often in shaded, moist environments.
Ecology
Inedible (hard, woody, no flesh)
Fruit body
Fruit body size medium to large, thickness up to ~1.5 cm
Dimensions
Cap / bracket ~5–15 cm across
Chemical reactions
Not well documented
Odour
Faint, mild
Taste
Woody, tough
Microscopy
Microscopic features:
Description
Spores globose to subglobose, smooth, hyaline, non-amyloid
Description
Hyphal system: dimitic (generative + skeletal)
Description
Hymenial setae: dark brown setae often present in pore surface
Overview
Medium-to-large, rusty brown porecrust fungus found on dead hardwood.
1907). N. Amer. Fl. (New York) 9(1): 5.
Field encounters
Source hashtags
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