Gerronema waikanaense (G. Stev.) J.A. Cooper 2014

Caption:

Details

Name scientific

Gerronema waikanaense (G. Stev.) J.A. Cooper, Mycosphere 5 282 (2014)

Preferred name

Gerronema waikanaense (G. Stev.) J.A. Cooper 2014

Taxonomy reference

Cooper, J.A. 2014: New species and combinations of some New Zealand agarics belonging to Clitopilus, Lyophyllum, Gerhardtia, Clitocybe, Hydnangium, Mycena, Rhodocollybia and Gerronema. Mycosphere 5(2): 263-288.

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Endemic

Present

New Zealand

Political Region

Nomenclature

Authors

(G. Stev.) J.A. Cooper

Original authors

G. Stev.

Combination authors

J.A. Cooper

Publication place

Year published

2014

Publication page

282

Orthography

waikanaensis

Nomenclatural code

ICN

Basionym

Hygrophorus waikanaensis G. Stev. 1963 [1962]

Taxonomic rank

species

Canonical form

Gerronema waikanaense

Classification

Kingdom

Fungi

Phylum

Basidiomycota

Class

Agaricomycetes

Order

Agaricales

Family

Porotheleaceae

Genus

Gerronema

Species

waikanaense

Synonyms

Associations

View full associations record

Association type

Associated organism

Association source

isolated from

Hoheria populnea A.Cunn.

ICMP (1 records from New Zealand.)

has host

Hoheria populnea A.Cunn.

PDD (1 records from New Zealand.)

has host

Leptospermum ericoides

PDD (1 records from New Zealand.)

has host

Nothofagus truncata (Colenso) Cockayne

PDD (1 records from New Zealand.)

has host

Salix fragilis L.

PDD (2 records from New Zealand.)

Descriptions

Horak, E. 1971: A contribution towards the revision of the Agaricales (Fungi) from New Zealand. New Zealand Journal of Botany 9(3): 403-462.

Hygrophorus waikanaensis G. Stev. 1963 [1962]

Notes

The systematic position of this species remains doubtful because there are several characters such as structure of the cuticle and the cheilo- and caulocystidia which indicate that it is near Hydropus or Gerronema.

Horak, E. 1990: Monograph of the New Zealand Hygrophoraceae (Agaricales). New Zealand Journal of Botany 28(3): 255-306.

Hygrophorus waikanaensis G. Stev. 1963 [1962]

Collections Examined

SPECIMEN: NZ: W, Waikanae, in humus around rotting standing tree, 1 i l951, Stevenson, K-797 (holotype).

Illustrations

ICON.: Stevenson (1962: 375).

Notes

The type material is in poor condition and no spores have been recovered. - Basidia 50-60 x 5-6 um, 4-spored. - Pileipellis a cutis of repent-suberect cylindrical hyphae (2-8 um diam.), in KOH with dark brown plasmatic and/or encrusting pigment, membranes not gelatinised. Clamp connections not observed.

The material probably represents a species of Hydropus (cf. Singer, 1981).

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

Hygrophorus waikanaensis G. Stev. 1963 [1962]

Notes

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

Stevenson, G. 1963: The Agaricales of New Zealand: IV. Kew Bulletin 16(3): 373–384.

Hygrophorus waikanaensis G. Stev. 1963 [1962]

Description

Pileus 0.5-2.5 cm. diam., lilac, with sparse appressed, velvety black fibrils, planoconvex with downrolled margin, sometimes depressed at centre; flesh greyish blue-green. Gills decurrent, greyish flax blue, shallow, triangular in section, occasionally forking. Stipe 1-3 X 0.2-0.5 cm., lilac with scattered whitish fibrils, some showing blue-green striations, hollow, rather brittle. Spore print white. Basidia 40-45 X 4-5 µm., four-spored. Scent strong, of musk-vanilla.

Habitat

habitat: in humus in a dense group round the base of a rotting standing tree, Waikanae, 1,1.1951, Stevenson.

Illustrations

Typus: Stevenson 797 (PI. 8/2)

Latin

Pileus 0.5-2.5 cm. diam., lilacinus, fibrillis nigris velutinis sparse adpressis, plano-convexus, margine involuto, interdum medio depressus; came griseo-veneta. Lamellae decurrentes, griseo-lineae, angustae, medio sectae triangulae, nonnunquam furcatae. Stipes 1-3 X 0.2-0.5 cm., lilacinus, fibrillis sparsis albidis (nonnullis viridi-striatis) ornatus, cavus, subfragilis. Sporae in cumulo albidae. Odor fortis, moschatus vel vanillae.

Notes

At the time of collection the spore print was noted to be white but the spores were not examined with a microscope. A later search revealed many mould spores; a very few spores, 4x5μm., ovoid, were seen attached to basidia but these may have been immature.