Helotium quintiniae Dennis 1961
Details
Details
Helotium quintiniae Dennis, Kew Bull. 15 309 (1961)
Nomenclature
Dennis
Dennis
1961
309
ICN
Helotium quintiniae Dennis 1961
NZ holotype
species
Helotium quintiniae
Classification
Descriptions
Helotium quintiniae Dennis 1961
Apothecia gregaria, stipitata, cyathiformia, disco vix 1 mm. lato, castaneo, excipulo ex hyphis elongatis, parallelis, 5-6 µ crassis contexto. Asci clavati, octospori, 55-60 x 4-5 µ, apice subacutati, jodo coerulescentes; ascosporae monostichae vel subdistichae, hyalinae, continuae, ellipticae, 5 x 2 µ; paraphyses filiformes, 2 µ crassae, apicem versus baud incrassatae.
The densely clustered apothecia suggest the presence of some kind of stroma within the bark but I can detect neither sclerotium nor black line in sections cut through the bark beneath the clusters. I am, therefore, constrained to refer the species to Helotiun instead of to some genus of the Sclerotiniaceae as its appearance would at first sight suggest. Pseudohelotiurn microcenangium Penz. & Sacc. looks rather similar but with shorter stipe and apparently a different structure, 'contextu excipuli parenchymatico flavicante'.
In cortice Quintiniae serratae (Saxifragaceae), The Forks, Okarito, Westland, 21.4.1955, Dingley 19041 (typus).
Helotium quintiniae Dennis 1961
[Notes from Kew Type specimen, PRJ 2010] On bark amongst sooty moulds. There are other collections in PDD given this name, need to check them. Type with translucent brown apothecia with long, thin stipes, looks a bit like a Crocicreas. – but no mention of gelatinous tissue in description. Small apothecia barely visible in the photos
Taxonomic concepts
Global name resources
Collections
Notes
typification
In cortice Quintiniae serratae (Saxifragaceae), The Forks, Okarito, Westland, [New Zealand] 21.4.1955, Dingley PDD 19041 (typus)
Metadata
1cb18ca9-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
15 June 1993
15 December 2003
