Hustad, V.P.; Miller, A.N. 2015: Studies in the genus Glutinoglossum. Mycologia 107: 647-657.
Details
Details
Hustad, V.P.; Miller, A.N. 2015: Studies in the genus Glutinoglossum. Mycologia 107: 647-657.
10.3852/14-328
Article
Taxonomic concepts
Geoglossum glabrum var. minor Cooke
Descriptions
Dennis (1961) cites a specimen (Berggren 6) from Waitaki, New Zealand, (described as a nomen nudum by Cooke as Geoglossum glabrum which the ascospores are uniformly seven-septate. We have not been able to locate this material and no further description of the fungus is provided, but it is likely either Glutinoglossum australasicum or Glutinoglossum exiguum.
Comments: Spooner (1987) describes a collection (Beaton 134) from Victoria, Australia, with uniformly seven-septate spores that matches the description of Glutinoglossum australasicum. This species seems to be the most abundant Glutinoglossum in Australasia, accounting for more than 85% of specimens that have been collected from Australia and New Zealand.
Comments: This species is morphologically similar to careful morphological examination is capable of differentiating between the two species. G. australasicum has a generally larger ascocarp and is found in greater abundance. G. exiguum has distinctly pyriform-globose inflated paraphyses tips that are conspicuous in fresh material with a hand lens. Ascospores sizes of the two species largely overlap, but the ascospores in G. australasicum are slightly longer and wider.
"There does not seem to be definitive evidence that true Glutinoglossum glutinosum exists in Australasia. All specimens collected from Australia and New Zealand have been either australasicum or G. exiguum. The existence of true G. glutinosum in Australasia would not be without precedent as species of Geoglossomycetes described from the northern hemisphere (e.g. Geoglossum cookeanum, Trichoglossum hirsutum)."
Fungi of the genus are characterized by the production of viscid, black, clavate ascocarps with a distinct gelatinous layer of elongated, hyaline, sparsely septate paraphyses covering most of the surface of the ascocarp, and slowly maturing ascospores that are initially hyaline and lack septation, but later develop septa and become brown.
The stout ascospores and the occassionally curved paraphyses tips distinguish it from all other Glutinoglossum species.
Cited scientific names
- Geoglossum glabrum var. minor Cooke 1879
- Glutinoglossum australasicum Hustad & A.N. Mill. 2015
- Glutinoglossum exiguum Hustad & A.N. Mill. 2015
- Glutinoglossum glutinosum (Pers.) Hustad, A.N. Mill., Dentinger & P.F. Cannon 2013
- Glutinoglossum Hustad, A.N. Mill., Dentinger & P.F. Cannon 2013
- Glutinoglossum methvenii Hustad & A.N. Mill. 2015
Metadata
10805beb-d6eb-48d6-84bb-f7a596baa828
reference
Names_Fungi
6 March 2015
9 November 2016
