Descomyces albus (Klotzsch) Bougher & Castellano 1993

Caption:

Details

Name scientific

Descomyces albus (Klotzsch) Bougher & Castellano, Mycologia 85 280 (1993)

Preferred name

Descomyces albus (Klotzsch) Bougher & Castellano 1993

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Exotic

Present

New Zealand

Political Region

Anon

Nomenclature

Combination authors

Bougher & Castellano

Original authors

Klotzsch

Authors

(Klotzsch) Bougher & Castellano

Publication place

Bougher, N.L.; Castellano, M.A. 1993: Delimitation of Hymenogaster sensu stricto and four new segregate genera. Mycologia 85(2): 273-293.

Year published

1993

Publication page

280

Nomenclatural code

ICN

Basionym

Hymenangium album Klotzsch 1839

Taxonomic rank

species

Canonical form

Descomyces albus

Classification

Kingdom

Fungi

Phylum

Basidiomycota

Class

Agaricomycetes

Order

Agaricales

Family

Bolbitiaceae

Genus

Descomyces

Species

albus

Synonyms

Associations

View full associations record

Association type

Associated organism

Association source

has host

Eucalyptus globulus Labill.

Bougher, N.L.; Lebel, T. (2001)

has host

Eucalyptus delegatensis R.T.Baker

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

has host

Nothofagus menziesii (Hook.f.) Oerst.

McKenzie, E.H.C.; Buchanan, P.K.; Johnston, P.R. (2000)

has mycorrhizal host

Eucalyptus

Chu-Chou, M.; Grace, L.J. (1983)

has host

Callistemon

PDD (1 records from [Not available].)

has host

Eucalyptus

PDD (5 records from [Not available].)

has host

Kunzea

PDD (1 records from [Not available].)

has host

Kunzea ericoides (A.Rich.) Joy Thomps. 1983

PDD (6 records from [Not available].)

has host

Kunzea robusta de Lange & Toelken 2014

PDD (1 records from [Not available].)

has host

Myrtaceae

PDD (1 records from [Not available].)

has host

Pseudotsuga menziesii (Mirb.) Franco

PDD (1 records from [Not available].)

Descriptions

Beaton, G.W.; Pegler, D.N.; Young, T.W.K. 1985: Gasteroid Basidiomycota of Victoria State, Australia. 3. Cortinariales. Kew Bulletin 40(1): 167–204.

Hymenogaster albus (Klotzsch) Berk. 1844

Collections Examined

AUSTRALIA. Victoria, Eildon-Jamieson road, Big River bridge, hypogeal in mixed eucalyptus forest, 13 Sept. 1973, K. & G. Beaten 21; Rubicon, Royston road, hypogeal in wet eucalyptus forest, 16 May 1974, K. & G. Beaton, Apollo Bay, Maits Rest, in wet eucalyptus forest, 19 July 1982, K. & G. Beaton 41; Eildon-Bonnie Doon road, hypogeal in dry, mixed eucalyptus forest, 16 Aug. 1982, A. C. Beauglehole, K. & G. Beaton-, Portland, Lower Gleneig Nat. Park, River road, hypogeal under Melaleuca leucodendron L., 16 Sept. 1982, H. & C. Campbell & Y. Compton, Cathedral Range, Cathedral Park, Blackwood Flat, hypogeal under Eucalyptus radiata Sieber, 10 May 1983, K. & G. Beaton. TASMANIA. Rodway 117 (type of H. albellus, K). SCOTLAND. Glasgow, Botanic Garden, Oct. 1830, Hooker fit. (lectotype of H. albus, K).

Description

asterocarp 0.5-2 cm diam., subglobose to pyriform, basally attached. Peridium thin, dingy white to pallid yellowish brown, glabrous, at times cracking, floccose and partially detersile. Gleba pale brown to ferruginous, loculate, of irregular, empty or partially filled chambers, very variable in size, without radial arrangement. Tramal plates up to 175 µm thick, white, with a narrow hymenophoral trama and very broad subhymenial layers; clamp-connexions present on all hyphae. Sterile base minute or none.
Spores 14-17(-19.5) x 7.5-11.5(16 ± 1 x 10 ± 0.5) µm (excl. myxosp.), Q = 1.6; limoniform, deep golden brown to fuscous brown, with a thickened wall bearing a coarsely rugulose exosporial ornamentation, overlain by a loose membranous, hyaline myxosporium. Basidia 28-33 x 9-11 µm, clavate, bearing two short sterigmata, and forming a regular palisadic hymenium. Hymenophoral trama regular, hyaline, of inflated, thin-walled hyphae, 3-18 µm diam. Subhymenial layer very well developed, 20-30 µm wide, pseudoparenchymatous. Peridiopellis an agglutinated, stratified epithelium, of hyaline, thin-walled elements, 26-40 x 13-30 µm, globose to pyriform.

Notes

Berkeley (1836: 229) gave the name 'Rhizopogon albus Bull.' to material collected by J. D. Hooker in the Botanic Garden, Glasgow, and this material was sent to Klotzsch. Klotzsch (1839) matched this to material gathered in the botanic garden at Grunewald, near Berlin, and redescribed it as Hymenangium albus Klotzsch, type species of the genus Hymenangium Klotzsch. The Glasgow specimens, labelled 'Hymenangium album' by Klotzsch are now located in the Kew Herbarium, whilst the Grunewald material is lost. Dodge & Zeller (1934: 641) recorded collections from many north temperate localities, in both Europe and North America, but commented that it was usually collected in pots of cultivated plants in greenhouses, often associated with eucalyptus, and Hawker (1954: 535) did not regard this species as indigenous in Western Europe. Cribb (1956: 126) confirmed the occurrence of H. albus in Australia, after matching Queensland collections to the Glasgow material. It is likely that Cribb accepted a broad species concept for she commented on the exceptional variability of the spore form, and her illustrations would suggest that some of the collections included H. zeylanicus and H. nanus in addition to H. albus. Examination of. H. albellus, based on gasterocarps gathered in Tasmania by Rodway, confirms this to be a later synonym of H. albus.
The mucronate spores and epithelial peridiopellis indicate a close affinity with H. zeylanicus, differing in the shorter and less fusoid spore-form. This is the most common and plentiful species of Hymenogaster in Victoria State.

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.

Descomyces albus (Klotzsch) Bougher & Castellano 1993

Description

Type: Mycorrhizal Fungi; Description: Basidiomata hypogeous, globose to subglobose, white at first, becoming lemon yellow when mature, 10–20 mm in diameter; peridium composed of a single layer, white or cream in section. Gleba ochraceous, becoming cinnamon brown, with irregularly shaped empty cells; columella reduced to a small sterile base. Basidiospores broadly elliptical to citriform, 0-septate, 17–23 × 10–17 μm (including the utricle), golden brown to dark brown, verruculose; utricle conspicuous, not covering the apex.

Distribution

Distribution: Coromandel, Bay of Plenty, Taupo.; 1st Record: Chu-Chou & Grace (1981b: as Hymenogaster albus).

Notes

Pathogenicity

Significance: Isolated from and shown experimentally to be an ectomycorrhizal associate of Eucalyptus species (Chu-Chou & Grace 1981b). The fungus has been found only in plantations. NEW ZEALAND RECORD OF PLANT ASSOCIATION: Chu-Chou & Grace (1981b: as Hymenogaster albus).; Host(s): Eucalyptus delegatensis, E. fastigata, E. nitens, E. regnans, E. saligna, E. sieberi, Nothofagus menziesii.