Zelotetraploa aquatica gen. & sp nov and Blastoheterospora catenata gen. & sp nov., on submerged wood from Brazil

Two new genera and species, Zelotetraploa aquatica and Blastoheterospora catenata, are described and illustrated. Zelotetraploa aquatica is distinguished by monoblastic, globose conidiogenous cells and rectangular to oblong, euseptate, dictyoseptate conidia composed of four rows of cells that develop independently. Blastoheterospora catenata, which arises conspicuously from the conidial cell rows of Z. aquatica, is characterized by branched blastocatenate conidia that are polymorphic (unicellular, phragmoseptate, dictyoseptate, or subchiroid) and variegated, with a Conioscyphopsis-like synanamorph arising rarely from dictyoseptate conidia.