Oidium hortensiae Jørst. 1926

Details

Name scientific

Oidium hortensiae Jørst. 1926

Preferred name

Pseudoidium hortensiae (Jørst.) U. Braun & R.T.A. Cook 2012

Taxonomy reference

Braun, U.; Cook, R.T.A. 2012: Taxonomic Manual of the Erysiphales (Powdery Mildews). CBS Biodiversity Series. 11. 707 p.

Nomenclature

Authors

Jørst.

Original authors

Jørst.

Publication place

Jørstad, I. 1926: The Erysiphaceae of Norway. Skrifter utgitt av det Norske Videnskaps-Akademi i Oslo. 1925.

Year published

1926

Publication page

106

Nomenclatural code

ICN

Basionym

Oidium hortensiae Jørst. 1926

Taxonomic rank

species

Canonical form

Oidium hortensiae

Classification

Kingdom

Fungi

Phylum

Ascomycota

Class

Leotiomycetes

Order

Helotiales

Family

Erysiphaceae

Genus

Oidium

Species

hortensiae

Associations

View full associations record

Association type

Associated organism

Association source

has host

Acanthus mollis L.

Amano, K. (1986)

has host

Acanthus mollis L.

Boesewinkel, H.J. (1977)

has host

Acanthus mollis L.

Boesewinkel, H.J. (1979)

has host

Acanthus mollis L.

Boesewinkel, H.J. (1980)

has host

Hydrangea macrophylla (Thunb.) Ser.

Brien, R.M.; Dingley, J.M. (1951)

has host

Hydrangea macrophylla (Thunb.) Ser.

Dingley, J.M. (1969)

has host

Hydrangea macrophylla (Thunb.) Ser.

Gadgil, P.D. (in association with Dick, M.A.; Hood, I.A.; Pennycook, S.R.) (2005)

has host

Hydrangea macrophylla (Thunb.) Ser.

Hammett, K.R.W. (1978)

has host

Acanthus mollis L.

Pennycook, S.R. (1989)

Descriptions

Gadgil, P.D. (in association with Dick, M.A.; Hood, I.A.; Pennycook, S.R.) 2005: Fungi on trees and shrubs in New Zealand. Fungi of New Zealand. 4. Fungal Diversity Press.

Oidium hortensiae Jørst. 1926

Description

Type: Powdery Mildews; Description: Mycelium superficial, evanescent or dense, white, hyphae 5–7 μm wide; on leaves, stems, and flowers. Appressoria multi-lobed. Conidiophores 70–90 × 7–9 μm, foot cell straight. Conidia produced singly, oval or elliptical, 0-septate, 28–45 × 14–20 μm, smooth, hyaline.

Distribution

Distribution: Auckland.; 1st Record: Boesewinkel (1977a).

Notes

Notes: Oidium is one of the anamorphic genera that include members of the Erysiphaceae for which no teleomorph is known.

Pathogenicity

Significance: None.; Host(s): Hydrangea macrophylla.