This genus is a mould that lacks a known sexual state and thus belongs to the Fungi Imperfecti. It is generally classified as a dematiaceous (dark-walled) fungus.

Stachybotrys alternans (obsolete)
This obsolete species is a synonym of S. chartarum
Stachybotrys atra (obsolete)
This obsolete species is a synonym of S. chartarum
Stachybotrys chartarum
S. alternans is an obsolete synonym of this species.
S. atra is an obsolete synonym of this species.
Stachybotrys echinata
Notes: The correct genus for this species has been a subject of some debate. Li D-W, Yang CS, Haugland R and Vesper S. 2003. A new species of Memnoniella. Mycotaxon 135:253-257 suggest that it should be Memnionella echinata. However, echinata can form both conidia in chains (Memnoniella) and conidia in balls (Stachybotrys). Further, the molecular data in Haugland RA, SJ Vesper, SM Harmon. 2001. Phylogenetic relationships of Memnoniella and Stachybotrys species and evaluation of morphological features for Memnoniella species identification. Mycologia 93(1):54-65 suggests that echinata should be in Stachybotrys. Thus our classification.

Memnionella echinata is an obsolete synonym of this species.

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