Mycosphaerella ulmi Kleb. 1902

Details

Name scientific

Mycosphaerella ulmi Kleb., Z. Pflanzenkrankh. 12 257 (1902)

Preferred name

Phloeospora ulmi (Fr.) Wallr. 1833

Taxonomy reference

Quaedvlieg, W.; Verkley, G.J.M.; Shin, H.-D.; Barreto, R.W.; Alfenas, A.C.; Swart, W.J.; Groenewald, J.Z.; Crous, P.W. 2013: Sizing up Septoria. Studies in Mycology 75: 307-390.

Nomenclature

Original authors

Kleb.

Authors

Kleb.

Publication place

Klebahn, H. 1902: Zeitschrift für Pflanzenkrankheiten 12: - 257 -.

Year published

1902

Publication page

257

Nomenclatural code

ICN

Basionym

Mycosphaerella ulmi Kleb. 1902

Taxonomic rank

species

Canonical form

Mycosphaerella ulmi

Classification

Kingdom

Fungi

Phylum

Ascomycota

Class

Dothideomycetes

Order

Capnodiales

Family

Mycosphaerellaceae

Genus

Mycosphaerella

Species

ulmi

Associations

View full associations record

Association type

Associated organism

Association source

has host

Ulmus ×vegeta (Loudon) Lindl.

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

has host

Ulmus ×vegeta (Loudon) Lindl.

Dingley, J.M. (1969)

has host

Ulmus ×hollandica Mill.

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

has host

Ulmus americana L.

Gilmour, J.W. (1966)

has host

Ulmus ×hollandica Mill.

McKenzie, E.H.C. (1987)

has host

Ulmus ×hollandica Mill.

Pennycook, S.R. (1989)

Descriptions

Dingley, J.M. 1969: Records of plant diseases in New Zealand. New Zealand Department of Scientific and Industrial Research, Bulletin. 192.

Mycosphaerella ulmi Kleb. 1902

Notes

Leaf spot on elm is of little importance; it may cause early leaf fall. The ascogenous stage has not been found in New Zealand. Both host and fungus are introduced and in New Zealand are of no economic importance.

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.

Mycosphaerella ulmi Kleb. 1902

Description

Type: Foliicolous Fungi; Description: Ascomata perithecial, scattered, immersed, subglobose, black, 0.1 mm in diameter; on irregular brown leaf spots on the lower surfaces of leaves. Asci elongate-clavate, 90 × 10 μm. Ascospores fusiform, 1-septate, 26–28 × 3–4 μm, smooth, hyaline. Conidiomata acervular, brown, up to 0.2 mm in diameter; on leaf spots on the lower surfaces of leaves. Conidia sickle-shaped, 3–5-septate, 30–60 × 4–6 μm, smooth, hyaline; oozing out in whitish masses.

Distribution

Distribution: Auckland, Waikato, Bay of Plenty, Taranaki, Hawkes Bay, Nelson.; 1st Record: Brien & Dingley (1951: as Septogloeum ulmi).

Notes

Pathogenicity

Significance: A common leaf spot of little importance.; Host(s): Ulmus americana, U. ×hollandica, U. ×vegeta.