Acrospermum chilense sp. nov. from Chile and the Acrospermales ord. nov.

acrospermum chilense sp. nov. on living stems of chusquea quila from southern chile is described, illustrated and discussed. the asci and ascospores, more than 1000 μ m long, may be the longest ever found in the ascomycetes. the ordinal position of the family acrospermaceae is discussed, and the order acrospermales ord. nov. is erected to accommodate it.