Erysiphe densa Berk. 1855

Caption:

Details

Name scientific

Erysiphe densa Berk. 1855

Preferred name

Erysiphe densa Berk. 1855

Taxonomy reference

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

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Endemic

Present

New Zealand

Political Region

Anon

Nomenclature

Original authors

Berk.

Authors

Berk.

Publication place

Berkeley, M.J. Fungi. In: Hooker, J.D. Flora Novae-Zelandiae. Part II. Flowerless Plants. Lovell Reeve. 172-210, 338.

Year published

1855

Publication page

208

Nomenclatural code

ICN

Basionym

Erysiphe densa Berk. 1855

Type locality

Taxonomic rank

species

Canonical form

Erysiphe densa

Typification

HAB. On living leaves of Arisiotelia, Wairarapa, [New Zealand] Colenso holotype K(M), isotype PDD 54541. Epitype MBT 10012970, NEW ZEALAND. Mid Canterbury, Christchurch, Waipara Street, on Aristotelia serrata, 28 Feb 2014, J.A. Cooper (PDD 105489). Ex-Epitype sequences: MK432758 (ITS); MK431473 (28S).

Classification

Kingdom

Fungi

Phylum

Ascomycota

Class

Leotiomycetes

Order

Helotiales

Family

Erysiphaceae

Genus

Erysiphe

Species

densa

Associations

View full associations record

Association type

Associated organism

Association source

has host

Aristotelia fruticosa Hook.f.

Amano, K. (1986)

has host

Aristotelia serrata (J.R.Forst. & G.Forst.) W.R.B.Oliv.

Berkeley, M.J.

has host

Aristotelia fruticosa Hook.f.

Boesewinkel, H.J. (1976)

has host

Aristotelia fruticosa Hook.f.

Boesewinkel, H.J. (1977)

has host

Aristotelia fruticosa Hook.f.

Boesewinkel, H.J. (1980)

has host

Aristotelia fruticosa Hook.f.

Braun, U. (1987)

has host

Aristotelia fruticosa Hook.f.

Dingley, J.M.; Brien, R.M. (1956)

has host

Aristotelia fruticosa Hook.f.

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

has host

Aristotelia serrata (J.R.Forst. & G.Forst.) W.R.B.Oliv.

Hammett, K.R.W. (1978)

has host

Aristotelia serrata (J.R.Forst. & G.Forst.) W.R.B.Oliv.

Salmon, E.S. (1900)

has host

Aristotelia

PDD (1 records from [Not available].)

has host

Aristotelia racemosa

PDD (2 records from [Not available].)

has host

Aristotelia serrata (J.R.Forst. & G.Forst.) W.R.B.Oliv.

PDD (4 records from [Not available].)

Descriptions

Berkeley, M.J. Fungi. In: Hooker, J.D. Flora Novae-Zelandiae. Part II. Flowerless Plants. Lovell Reeve. 172-210, 338.

Erysiphe densa Berk. 1855

Latin

bifrons, mycelio denso arachnoideo persistente, sporangiis mediis globosis sparsis, appendiculis flexuosis candidis intertextis obovatis brevibus, sporidiis ellipticis suboctonis.

Notes

This differs from E. Martii, Lév., merely in its thick persistent mycelium, which gives it a very lichenoid appearance, especially when on the upper surface of the leaves. The appendages are flexuous, sometimes forked, and frequently bear one or two little knots towards the end, showing a tendency to ramify.

Typification

On living leaves of Aristotelia, Wairarapa, Colenso.

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.

Erysiphe densa Berk. 1855

Description

Type: Powdery Mildews; Description: Mycelium superficial, thin to dense, white, hyphae 4–5 μm wide; on leaves, twigs, and inflorescences. Appressoria strongly lobed. Ascomata cleistothecial, scattered to gregarious, superficial, globose to oval, dark brown, 0.1 mm in diameter, with numerous 100–300 μm long, unbranched, straight or flexuous, hyaline appendages. Asci 8–18 per ascoma, clavate, short stalked, 40–90 × 25–40 μm. Ascospores 6–8 per ascus, oval, 0-septate, 16–20 × 9–10 μm, smooth, hyaline. Conidiophores 75–110 × 8–13 μm, foot cell straight or swollen. Conidia produced singly, cylindrical, 35–45 × 16–19 μm, smooth, hyaline.

Distribution

Distribution: Wairarapa, Mid Canterbury.; 1st Record: Berkeley (1855).

Notes

Pathogenicity

Significance: None.; Host(s): *Aristotelia fruticosa, *A. serrata.

Johnston, P.R. 2010: Kew Type Specimens - images and notes from P.R. Johnston, 2010.