Fig. 1
Basidiospores of Coprinopsis domesticus (a, b), Schizophyllum commune (c, d), Coprinellus micaceus (e, f), and Psathyrella conopilus (g, h) accumulated in droplets in lids of plastic Petri-dishes after 18 h incubation of full mushroom caps or halves of caps (C. micaceus) positioned upside-down on wet tissues in the base of the Petri-dishes. a and c show overviews on lamellar patterns recognized by the distribution of larger droplets with spores. Lamella positions are also reflected in the photos in b, d–f by the distinct accumulation of spores in the liquid droplets. The milky appearance of droplets in d is due to hyaline spores of S. commune. Brown spores of the other species can be recognized as dark spots in the droplet areas. Liquid droplets with spores spread irregular flat on untreated surfaces of plastic lids (a–e, g) while droplets of some species flattened more and those of others rounded more up when lids were covered with Vaseline (f, h)