PDD 96456 – Mycosphaerella cunninghamii Syd.
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 96456
Specimen type:
Packet
Loan status:
Active
Database record added:
06 August 2012
Database record updated:
24 February 2023
Components
Primary component
Active identification
Determined name:
Mycosphaerella cunninghamii
Determiner:
J.A. Cooper
Identification date:
2012-03-24 (Verbatim: 2012/03/24)
Preferred name:
Mycosphaerella cunninghamii Syd.
Division:
Ascomycota
Class:
Dothideomycetes
Order:
Mycosphaerellales
Family:
Mycosphaerellaceae
Identification type:
Determination
Associations:
has host Rubus cissoides
Substrate:
dead attached leaves
Other components
Active identification
Determined name:
Rubus cissoides
Determiner:
J.A. Cooper
Identification date:
2012-03-17 (Verbatim: 17/03/2012)
Preferred name:
Rubus cissoides A.Cunn.
Division:
Tracheophyta
Class:
Magnoliopsida
Order:
Rosales
Family:
Rosaceae
Identification type:
Determination
Collection events
Primary collection event
Collection event type:
Field
Verbatim locality:
Christchurch, Port Hills, Omahu Reserve
Verbatim collector:
J.A. Cooper
Standardised collector:
J. A. Cooper
Collectors reference no.:
JAC12322
Verbatim date:
2012/03/17
Start date:
2012-03-17
New Zealand Area Codes:
Mid Canterbury
Country:
New Zealand
Native lands:
Ngāi Tahu
Georeferences:
New Zealand Map Grid:
2479478E 5727201N (WGS84 -43.662017 172.621446)
Altitudes:
from 427m
Specimen flags
Anamorph state:
teleomorph
Specimen notes
Public Note:
[Sydow - original description]. Small greyish spots on both surfaces of leaf. Perithecia hypophyllus only, densley aggregated in small, mostly angular groups 0.5-1.5 mm diameter. Individual perithecia subepidermal, conic/globose, black, 60-70um diam, papillate and always covered. Parenchymatic cells olivaceous brown 5-6um diamter, woven. Papilla elevating the covering but hardly perforating it. Brown sterile mycelium across surface of leaf, 4-7um thick[?]. Asci in fasicles, cylindrical or clavate/cylindrical, 35-42 x 8-10um, 8-spored, without paraphyses, spores 2-celled, oblong, rounded at the tip, tapering towards base but slightly obtuse, 1-septate, not constricted, hyaline, 10-12 x 2-2.5um. Upper cell always slightly wider. Leaves of Rubus australis, Riverton, Southland, 3/1/1882, T. Kirk (996). Characterised by crowded groups of perithecia and narrow spores. [Cooper] See also M. rubi = Septoria rubi (spores 18-22 x 3.5-4.5. Apioporthe vepris with initial filiform appendage on spores. Also 17 M. epithets linked to Rubus from Aptroot, e.g. M. holmii (=Davidiella), joerstadii on R. chamemorus, M. confusa, M. ligea, M. minoensis - most with questionable connections to Septoria rubi and Pseudocercospora rubi (both recorded in NZ). This material spores length=9.6-14.3µm (µ=11.0, σ=1.40), width=2.1-3.0µm (µ=2.5, σ=0.30), Q=3.8-5.4µm (µ=4.49, σ=0.57), n=9, Asci 45 x 6um. agrees with Sydow's description. This was the first plant examined specifically for this Mycosphaerella and it was found, suggesting the species is common. This is not M. rubi. Also raises question of teleomorph affiliations of NZ records of Septoria and Pseudocercospora rubi on native rubus. Is this actually a Didymella? interascular tissue = didymella, without, mycosphaerella. And dince there might be an associated ascochyta then perhamps a Didymella.
J.A. Cooper
J.A. Cooper
Assigned reference numbers
JA Cooper Fungarium:
JAC12322
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