Photos of Chaetomium spp. showing the pineapple shaped perithecia and under the higher magnification the lemon drop shaped spores.
Characteristics
Large ascomycetous fungus producing perithecia (17).
Allergen
Reported to be allergenic (7,17).
Growth Media
Found on a variety of substrates containing cellulose including paper and plant compost (17). Can produce an Acremonium-like state on fungal media (3).
Water Activity
0.90