Plectosporium, a new genus for Fusarium, tabacinum, the anamorph of Plectosphaerella cucumerina

Abstract

Plectosporium is described as a new genus for Fusarium tabacinum (≡ Cephalosporium tabacinum), the anamorph of Plectosphaerella cucumerina. The genus is characterized by moist colonies, simple or branched conidiophores, apical or lateral phialides that sometimes proliferate percurrently or have more than one conidiogenous locus, with a cylindrical collarette and sometimes with a sinuous apex, bilaterally symmetric, hyaline, 0- to 1-septate conidia that often appear slightly curved in side view, and sometimes a Plectosphaerella teleomorph.

Key Words:

• Cephalosporium
• Colletotrichum
• Cucurbitaceae
• cucurbits
• Glomerella
• hyphomycetes
• Hypocreales
• soil fungi
• Sordariales
• systematics

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In memoriam: Walter Gams (1934–2017)