Hygrophorus waikanaensis G. Stev. 1963 [1962]

Details

Name scientific

Hygrophorus waikanaensis G. Stev., Kew Bull. 16 375 (1963 [1962])

Preferred name

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

Taxonomy reference

Segedin, B.P.; Pennycook, S.R. 2001: A nomenclatural checklist of agarics, boletes, and related secotioid and gasteromycetous fungi recorded from New Zealand. New Zealand Journal of Botany 39(2): 285-348.

Nomenclature

Original authors

G. Stev.

Authors

G. Stev.

Publication place

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

Year published

1963

Year on publication

1962

Publication page

375

Nomenclatural code

ICN

Basionym

Hygrophorus waikanaensis G. Stev. 1963 [1962]

Type locality

NZ holotype

Taxonomic rank

species

Canonical form

Hygrophorus waikanaensis

Typification

HABITAT : in humus in a dense group round the base of a rotting standing tree, Waikanae, [New Zealand], 1.1.1951, Stevenson 797, holotype K(M)

Classification

Kingdom

Fungi

Phylum

Basidiomycota

Class

Agaricomycetes

Order

Agaricales

Family

Hygrophoraceae

Genus

Hygrophorus

Species

waikanaensis

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.