Honey Fungus vs Spectacular Rustgill
Armillaria mellea compared with Gymnopilus junonius — how to tell them apart in the field.
This is a dangerous confusion.
At least one of these species is toxic. Never eat a wild mushroom based on a photo comparison alone — verify with local experts.
Honey Fungus
Armillaria mellea
Edible with Caution
Spectacular Rustgill
Gymnopilus junonius
ToxicPsychoactive
How to Tell Them Apart
Edible when cooked. Also grows in clusters on wood. Honey Mushrooms have a white spore print (not rusty orange), lighter tan to honey-colored caps, and lack the intense bitterness of Gymnopilus. The white spore print is definitive.
Side-by-Side Identification
| Trait | Honey Fungus | Spectacular Rustgill |
|---|---|---|
| Cap | 3–15 cm across. Convex when young, flattening with age. Honey-yellow to tawny brown, sometimes with an olive tinge. Surface has fine dark scales or hairs concentrated at the center. Sticky when wet. | 5-18 cm across. Convex, expanding to broadly convex or nearly flat. Bright golden-orange to tawny-orange, sometimes with a slightly darker center. Surface is dry, smooth to slightly fibrillose or scaly. Flesh is thick, firm, and yellow. |
| Gills | White to pale cream when young, developing pinkish-brown spots with age. Slightly decurrent (running down the stem). Moderately spaced. | Attached (adnate to slightly decurrent). Bright yellow when young, becoming rusty orange-brown as spores mature. Crowded. Edges may be slightly uneven. |
| Stem | 5–15 cm tall, 1–2 cm thick. Tough and fibrous — the lower portion is often too woody to eat. Pale above the ring, darker brown and somewhat scaly below. Has a prominent white to yellowish ring (annulus) near the top. | 5-15 cm tall, 1-3 cm thick. Solid, firm, yellow to orange-brown. Has a membranous ring (annulus) in the upper portion that is often stained rusty by deposited spores. Base often slightly swollen. Flesh is yellow and fibrous. |
| Spore print | White to pale cream. | Rusty orange to bright orange-brown. |
| Odor | Pleasant, slightly sweet and mushroomy. Some describe it as faintly honey-like. | Not distinctive, sometimes faintly mealy. The taste is intensely and persistently bitter, which is a key identification feature. |
| Habitat | Parasitic on living trees and saprotrophic on dead wood. Attacks hardwoods and conifers alike — oaks, maples, birches, spruces, firs. Spreads underground via thick black rhizomorphs (bootlace-like cords) that can extend several meters through soil to infect new hosts. Commonly found at the base of weakened or dying trees, on stumps, and on buried roots. | Saprotrophic, occasionally weakly parasitic. Grows in dense clusters at the base of hardwood stumps and logs, especially oak, beech, and maple. Also found on buried roots, causing it to appear to grow from the ground. Occasionally on conifers. Common in deciduous and mixed forests, parks, and urban tree plantings. |
| Season | Late summer through late autumn. Peak fruiting is September–November in the Northern Hemisphere. Often appears in large flushes after autumn rains. | Autumn, typically September through November in temperate regions. Peak fruiting in October after sustained autumn rains. Can appear earlier or later depending on local conditions. |
Found one of these in the wild? Don't rely on memory — identify it from a photo with Orangutany and check it against both species before you touch it.