Quote:
Originally Posted by leek Ah - I thought these were a differnt species to my other post.
LEEK |
This is why you have to be very careful when identifying mushrooms, particularly if you are planning to eat them. They can look very different at different stages. Here are a few thoughts on how to recognise species in the genus
Volvariella and distinguish them from
Amanita.
Volvariella has a volva at the base of the stem, as does
Amanita. The gill attachment is also often helpful but not so much in this case -
Volvariella has gills that are distinctly free from the stem while
Amanita usually has gills that are finely adnexed (ie just touching at the top of the stem) to somewhat free, so there is an overlap in this character.
Volvariella does not have a partial veil (between edge of cap and stem), only the universal veil, so it does not have a ring. Some species of
Amanita have a ring, others don't.
The most important way of separating these two genera is the spore colour. In
Amanita the spores are white, in
Volvariella they are pink. But in young specimens the distinction will not always be clear in the field. The gills will gradually turn pink in
Volvariella as the spores ripen but young specimens may have pale gills. So taking a spore print is the most reliable way of separating these two genera.
Pluteus and
Volvariella can be confused if you miss the volva. Both have pinkish spores and gills that are free from the stem, so you need to make sure you get the base of the stem to check for the presence or absence of a volva.
Ken