Ring (veil)

Ring present

When mycologists stress the feature "ring present," they often mean not just fleeting remnants, but a strong, substantial, clearly defined ring that stays put for the mushroom's whole life. This is the so-called permanent or leathery ring.

24 species in the database.

Anatomy of a true ring

In her "Guide to the Fungi of Ukraine," M.Ya. Zerova notes that a strong, distinct ring forms when the partial veil is made of a very dense weave of hyphae (fungal threads). As the cap opens, this veil doesn't dissolve into slime or blow away in the wind — it holds firmly to the stem, forming a double-layered or substantial "skirt."

Roger Phillips and David Arora give classic examples of mushrooms in which the ring is a key architectural detail:

1. Death cap (Amanita phalloides): This deadly poisonous mushroom has a very handsome, broad skirt-like ring, grooved on top. It hangs down like a pleated white skirt. This ring is the single most important danger marker.

2. Button mushroom (Agaricus bisporus): It has a very dense, often double white ring.

3. Fly agaric (Amanita muscaria): The ring on its stem is usually very broad and soft, edged with yellowish or white flakes.

How reliable a distinct ring is

A substantial ring is a very reliable diagnostic feature. Even on very old mushrooms (old wood mushrooms, for example) it stays on the stem — it just dulls and turns brown from the spores that have dropped onto it from the gills.

Questions and answers

Why does the ring point upward in some Agaricus mushrooms, but downward in the death cap?

It depends on how exactly the veil was attached to the cap and stem as the mushroom grew. In the death cap it tears away from the cap margin and hangs down (like a classic skirt). In some other mushrooms it tears away from the stem and sticks up, forming a kind of "cup" (or collar). These are important botanical nuances that taxonomists rely on.

Are there mushrooms with two rings at once?

Yes, some Agaricus species (for example, Agaricus bitorquis, the pavement mushroom) have two distinct rings on the stem. One forms from the remains of the partial veil, the other from the remains of the universal veil, which has fused with the stem.

Can you rely on the ring alone when picking the blusher?

No. Many amanita species have a ring (both edible and poisonous ones). The blusher's key distinguishing feature is that its flesh changes color (turns pink or red) when pressed or cut.

Sources

1.Зерова М.Я. та ін. Визначник грибів України. 1979
2.Roger Phillips. Mushrooms (Roger Phillips)
3.David Arora. Mushrooms Demystified
4.Index Fungorum