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Neophaeosphaeria and Phaeosphaeriopsis, segregates of Paraphaeosphaeria

Published online by Cambridge University Press:  24 June 2003

Marcos P. S. CÂMARA ,
Annette W. RAMALEY ,
Lisa A. CASTLEBURY  and
Mary E. PALM
Marcos P. S. CÂMARA
Affiliation:
Systematic Botany and Mycology Laboratory (SBML), USDA Agricultural Research Service, Room 304, Building 011A, Beltsville, MD 20705-2350, USA. Present address: Departamento de Agronomia – Área de Fitossanidade, Universidade Federal Rural de Pernambuco, Av. Dom Manoel de Medeiros, s/n – 52171-900 Recife, Brazil.
Annette W. RAMALEY
Affiliation:
7 Animas Place, Durango, CO 81301, USA.
Lisa A. CASTLEBURY
Affiliation:
Systematic Botany and Mycology Laboratory (SBML), USDA Agricultural Research Service, Room 304, Building 011A, Beltsville, MD 20705-2350, USA.
Mary E. PALM
Affiliation:
USDA, Animal and Plant Health Inspection Service, SBML, Room 329, Building 011A, Beltsville, MD 20705-2350, USA. E-mail: [email protected]
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Abstract

Two new genera, Neophaeosphaeria and Phaeosphaeriopsis, are described to accommodate species of Paraphaeosphaeria that are not congeneric based on morphological characters and results of 18S rDNA sequence analyses. Paraphaeosphaeria s. str. is restricted to species with two-septate ascospores and anamorphs that produce non-septate, smooth, pale brown conidia enteroblastically from phialides which have some periclinal thickening. Species in Neophaeosphaeria have 3–4-septate ascospores and anamorphs that produce ovoid to ellipsoid, non-septate, brown, verrucose or punctate conidia from percurrently proliferating conidiogenous cells. Paraphaeosphaeria barrii, P. conglomerata, P. filamentosa and P. quadriseptata are transferred to Neophaeosphaeria. At present all species in Neophaeosphaeria occur on Yucca (Agavaceae). Phaeosphaeriopsis is described for species that produce 4–5-septate ascospores. Known anamorphs produce cylindrical, 0–3-septate, brown, punctate conidia from percurrently proliferating conidiogenous cells or bacillar conidia from simple phialides. P. agavensis, P. glauco-punctata, P. nolinae and P. obtusispora are transferred to Phaeosphaeriopsis. P. amblyspora is described as a new species.

Type
Research Article
Information
Mycological Research , Volume 107 , Issue 5 , May 2003 , pp. 516 - 522
Copyright
© The British Mycological Society 2003

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