Behaviour in cultures and habitat requirements of species within the genera Loreleia and Rickenella (Agaricales)

Abstract

The term eco-geogram is introduced for surveying (in logical order) ecological and geographical data connected with fungal species. The database PILZOEK was established for that purpose. Eco-geograms are provided in this paper as an example for data retrieval from PILZOEK concerning the agarics <em>Loreleia marchantiae, L. postii, Rickenella swartzii</em> and <em>R. fibula</em>. The potential degree of endangerment is discussed in regard to habitat requirements. European species of <em>Loreleia</em> are not regarded to be endangered in Central Europe, although the risk to get threatened, because of low frequency of fruit body occurrence and quite a narrow substrate specialization, could be higher than in case of <em>Rickenella fibula</em> and <em>R. swartzii. Cultures of Rickenella fibula, R. swartzii, Loreleia marchantiae (= Gerronema daamsii)</em> and <em>L. postii</em> were investigated in regard to pigment accumulation, chlamydospore formation and some other characters.