1. PaDIL Species Factsheet

Scientific Name: cocoina Pat. (: : : : )

Common Name Graphiola cocoina Live link: http://www.padil.gov.au/maf-border/Pest/Main/143028

Image Library New Zealand Biosecurity Live link: http://www.padil.gov.au/maf-border/

Partners for New Zealand Biosecurity image library

Landcare Research — Manaaki Whenua http://www.landcareresearch.co.nz/

MPI (Ministry for Primary Industries) http://www.biosecurity.govt.nz/ 2. Species Information

2.1. Details Specimen Contact: Eric McKenzie - [email protected] Author: McKenzie, E. Citation: McKenzie, E. (2013) Graphiola cocoina(Graphiola cocoina)Updated on 3/31/2014 Available online: PaDIL - http://www.padil.gov.au Image Use: Free for use under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY- NC 4.0)

2.2. URL Live link: http://www.padil.gov.au/maf-border/Pest/Main/143028

2.3. Facets Commodity Overview: Field Crops and Pastures Commodity Type: Coconut Distribution: Indo-Malaya, Neotropic, Oceania Groups: Fungi & Mushrooms Host Family: Pest Status: 1 NZ - Non-regulated species Status: 0 NZ - Unknown

2.4. Diagnostic Notes **Disease** Leaf ‘smut’. Small, grey or black, erumpent pustules (basidiomata) mainly on upper surface of frond, often surrounded by a subcircular or rectangular yellowish or brown spot, about 4 × 2 mm; yellowish or brown discolouration on opposite surface of frond.

**Morphology** _Basidiomata_ scattered, rarely simple, mostly composed of about 7–9 basidiomata, of irregular shape, (0.3–)0.6–0.9(–1.0) mm diam., with one more or less circular opening for each individual basidioma, cylindrical central spaces filled with light yellowish mass of spores. _Primary spores_ (basidiospores) ellipsoidal, separating into two secondary spores at transverse cross walls. _Secondary spores_ globose, 4–6 µm diam., hyaline, completely covered by dense, fine, irregular warts except for a small area where the secondary spore was in contact with the other part spore of the primary spore.

**Notes** Species of Graphiolaceae differ from species in other families of Exobasidiales by being biotrophic parasites on palm leaves (Arecaceae) and by black, cup-shaped basidiomata containing catenate basidia.

2.5. References - Piepenbring, M., Nold, F., Trampe, T. & Kirschner, R. (2012). Revision of the _Graphiola_ (Exobasidiales, Basidiomycota). _Nova Hedwigia 94_, 67–96. 3. Diagnostic Images

Graphiola cocoina symptoms on coconut Graphiola cocoina basidiomata on coconut leaf leaf In Life: E. McKenzie Landcare Research In Life: E. McKenzie Landcare Research

Results Generated: Sunday, October 3, 2021