question 8: Presence of a ring

The ring is often, as its name suggests, a kind of collar surrounding the stem or sometimes just a veil covering the tubes of young specimens. It can decay to a simple ring zone when getting old. A ring may be present mainly for members of the group of sticky/slimy boletes.
When in doubt, we can always select "I don't know" to prevent the system from using this criterion at all to compare candidate mushrooms. The presence of a ring being a very characteristic feature, we can also here impose this criterion as a mandatory feature in the results output by the identification search engine. For example, if the unknown mushroom has an obvious ring, by ticking both "yes, membranous or short-lived ring" and "force selected answer to criterion", we will exclude all mushrooms without a ring from the results produced by the search engine.

Examples:
   
The ring is here totally absent, select then "no, no ring" in this case     The ring is here large and membranous, it still covers a significant part of the tubes. Select then "yes, membranous or short-lived ring" in this case    

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