Diplochorella colensoi (Berk.) P.R. Johnst. & P.F. Cannon 2004

Caption:

Details

Name scientific

Diplochorella colensoi (Berk.) P.R. Johnst. & P.F. Cannon, New Zealand J. Bot. 42 922 (2004)

Preferred name

Diplochorella colensoi (Berk.) P.R. Johnst. & P.F. Cannon 2004

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Endemic

Present

New Zealand

Political Region

Anon

Nomenclature

Authors

(Berk.) P.R. Johnst. & P.F. Cannon

Original authors

Berk.

Combination authors

P.R. Johnst. & P.F. Cannon

Publication place

Johnston, P.R.; Cannon, P.F. 2004: New Phyllachora species from Myrsine and Rostkovia from New Zealand. New Zealand Journal of Botany 42(5): 921-933.

Year published

2004

Publication page

922

Nomenclatural code

ICN

Basionym

Dothidea colensoi Berk. 1855

Taxonomic rank

species

Canonical form

Diplochorella colensoi

Classification

Kingdom

Fungi

Phylum

Ascomycota

Class

Dothideomycetes

Order

Capnodiales

Family

Mycosphaerellaceae

Genus

Diplochorella

Species

colensoi

Synonyms

Associations

View full associations record

Association type

Associated organism

Association source

has host

Melicytus ramiflorus J.R.Forst. & G.Forst.

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

has host

Melicytus ramiflorus J.R.Forst. & G.Forst.

Johnston, P.R.; Cannon, P.F. (2004)

has host

Melicytus ramiflorus J.R.Forst. & G.Forst.

Dingley, J.M. (1969)

has host

Melicytus ramiflorus J.R.Forst. & G.Forst.

Hood, I.A. (1985)

has host

Melicytus ramiflorus J.R.Forst. & G.Forst.

Pennycook, S.R. (1989)

has host

Melicytus ramiflorus J.R.Forst. & G.Forst.

Sydow, H.; Sydow, P. (1904)

has host

Melicytus ramiflorus J.R.Forst. & G.Forst.

Theissen, F.; Sydow, H. (1915)

has host

Melicytus ramiflorus J.R.Forst. & G.Forst.

PDD (25 records from [Not available].)

is host of

Acremonium Link 1809

PDD (1 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.

Dothidea colensoi Berk. 1855

Description

Orbicular, about one line broad, pitch-black, minutely granulated, fertile on either side. Cells minute, white within.

Latin

orbicularis, utrinque fertilis, cellulis minutissimis.

Notes

I have not seen perfect fruit, but it is a very distinct species.

Typification

On decaying leaves, Colenso.

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

Diplochorella melicyti (Syd. & P. Syd.) Syd. & P. Syd. 1915

Notes

Tar spot (Diplochorella melicyti) on leaves of Melicytus is common throughout New Zealand. Both host and fungus are indigenous to New Zealand. This is probably the fungus imperfectly described by Berkeley (1855) as Dothidea colensoi.

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.

Diplochorella colensoi (Berk.) P.R. Johnst. & P.F. Cannon 2004

Description

Type: Foliicolous Fungi; Description: Ascomata stromatic, perithecial, scattered, subepidermal, partially erumpent later, roughly circular, dark brown, up to 0.1 mm in diameter; on black, thickened, angular leaf spots up to 2 mm in diameter, coincident on both surfaces of leaves. Asci cylindrical, 50–65 × 10–12 μm. Ascospores fusoid, 1-septate, 20–25 × 4–5 μm, smooth, hyaline.

Distribution

Distribution: Northland, Auckland, Coromandel, Bay of Plenty, Taupo, Wellington, Kaikoura, North Canterbury, Mid Canterbury.; 1st Record: Berkeley (1855: as Dothidea colensoi); Sydow & Sydow (1904: as Dothidella melicyti).

Notes

Pathogenicity

Significance: The fungus appears to cause premature yellowing of leaves but is of little significance.; Host(s): Melicytus ramiflorus.

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

Dothidea colensoi Berk. 1855

Notes

[Notes from Kew Type specimen, PRJ 2010] Kew images.

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

Parodiella maculata Massee 1898

Notes

[Notes from Kew Type specimen, PRJ 2010] Although the host plant was not identified in the original description (Massee 1898), judging on its macroscopic appearance, it could be a species of Pseudopanax. The macroscopic appearance and microscopic description of this fungus fits the common Pseudopanax pathogen, Placosoma nothopanicis.