A new species of Flammulina from Czechoslovakia, Flammulina ononidis Arnolds, is described. It differs from Flammulina velutipes in larger spores and individual growth on the perennial herb Ononis spinosa L. The paper discusses the ecology and distribution of this species, first found in 1972 in the České středohoří region.
Klán J. (1978): Flammulina ononidis Arnolds, ein besonderer Steppen-Samtfussrübling in der Tschechosliwakei. – Česká Mykologie 32(4): 205–214.