from The Century Dictionary.
- noun A genus of hymenomycetous fungi, type of the order Hydnei, characterized by having the hymenium inferior and spread over persistent spines or teeth which project from the pileus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun type genus of Hydnaceae
Sorry, no etymologies found.
Providing the weather conditions are right, hedgehogs hydnum repandum can regenerate a new crop within 10 days.
Bruce Palling for The Wall Stree t Journal A cluster of hedgehog mushrooms hydnum repandum in the New Forest in southern England.
They are not clustered at the ends of the branches, as in the bear's head hydnum, and the species can be easily distinguished by giving attention to the form of the branching and the distribution of the spines on the under side of the branches.
It is known by the popular name of "bear's head hydnum" in allusion to the groups of spines at the ends of the branches.
It forms a large, tubercular mass which does not branch like the coral hydnum or the bear's head, but more like the Satyr's beard hydnum, though the character of the spines will easily separate it from the latter.
It is more common than the coral hydnum so far as my observation goes.
= -- The medusa's head hydnum is a rarer species than either of the above in this country.