
Introduction
The Idaho Deadly Webcap (Cortinarius rubellus) is one of the most intriguing species found in North American woodlands. Deadly Webcap (Cortinarius rubellus) is a realistic state-level profile for Idaho, where foragers look for it in acidic conifer woods and northern mountain forest tied to Douglas-fir duff, alder bottoms, and wet cedar-hemlock forests. This page narrows the North American pattern to local terrain and seasonality instead of relying on generic continent-wide copy. webcaps are best left entirely alone by foragers. It is a deadly species and one of the key mushrooms beginners must memorize before foraging. Toxicity planning matters because orellanine poisoning can destroy kidneys days after a meal, making this one of the worst brown mushrooms to confuse.
"The Idaho Deadly Webcap is a prized find for foragers in the Pacific Northwest, often appearing when conditions are just right after seasonal rains."
“According to TroveRadar, the Idaho Deadly Webcap is primarily found in acidic conifer woods and northern mountain forest. in idaho, prioritize douglas-fir duff, alder bottoms, and wet cedar-hemlock forests. during fall.”
Habitat & Ecology
Identification Details
Idaho Deadly Webcap Key Features
| Feature | Description |
|---|---|
| Scientific Name | Cortinarius rubellus |
| Edibility | deadly |
| Primary Regions | Pacific Northwest |
| Toxicity Notes | orellanine poisoning can destroy kidneys days after a meal, making this one of the worst brown mushrooms to confuse |
Look-Alike Warning
Before consuming, ensure you can distinguish Idaho Deadly Webcap from these look-alikes:
- other webcaps
- small brown mushrooms
Take TroveRadar Into the Field
Offline maps, species identification, and find logging. Never lose a honey-hole again.
Explore Related Species

Arizona Western Sulphur Shelf
Laetiporus gilbertsonii
Western Sulphur Shelf (Laetiporus gilbertsonii) is a realistic state-level profile for Arizona, where foragers look for it in eucalyptus, oak, and hardwood trunks in warmer western climates tied to riparian cottonwoods, sky-island canyons, and desert wash edges. This page narrows the North American pattern to local terrain and seasonality instead of relying on generic continent-wide copy. warmer-region counterpart to eastern chicken mushrooms. It is edible for many people, but accurate identification and proper preparation still matter. Toxicity planning matters because edible for some, though western collections should be tested carefully because sensitivity is common.

Alaska Birch Polypore
Fomitopsis betulina
Birch Polypore (Fomitopsis betulina) is a realistic state-level profile for Alaska, where foragers look for it in dead birch trunks and limbs in northern forests tied to birch forests, spruce muskeg edges, and salmon streams. This page narrows the North American pattern to local terrain and seasonality instead of relying on generic continent-wide copy. closely tracks birch distribution across cool regions. It is usually gathered for teas, extracts, or study rather than for direct table use. Toxicity planning matters because not eaten as food and mostly valued for tea, carving, or traditional uses.