Persoonia (2012) 28, 49-65

P.W. Crous, B.A. Summerell, R.G. Shivas, A.J. Carnegie and J.Z. Groenewald (2012)
A re-appraisal of Harknessia (Diaporthales), and the introduction of Harknessiaceae fam. nov.
Persoonia 28, 49-65
Abstract: Harknessiaceae is introduced as a new family in the ascomycete order Diaporthales to accommodate species of Harknessia with their Wuestneia-like teleomorphs. The family is distinguished by having pycnidial conidio- mata with brown, furfuraceous margins, brown conidia with hyaline, tube-like basal appendages, longitudinal striations, and rhexolytic secession. Six species occurring on Eucalyptus are newly introduced, namely H. australiensis, H. ellipsoidea, H. pseudohawaiiensis, and H. ravenstreetina from Australia, H. kleinzeeina from South Africa, and H. viterboensis from Italy. Epitypes are designated for H. spermatoidea and H. weresubiae, both also occurring on Eucalyptus. Members of Harknessia are commonly associated with leaf spots, but also occur as saprobes and endophytes in leaves and twigs of various angiosperm hosts.
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Database assignments for author(s): Pedro W. Crous, Johannes Z. Groenewald, Angus J. Carnegie, Brett A. Summerell

Research topic(s) for pests/diseases/weeds:
identification/taxonomy

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Harknessia (anamorphic genus)