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Proliferodiscus dingleyae Spooner 1987

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Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner 1987

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Indigenous, non-endemic
Present
New Zealand
Political Region

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Spooner
Spooner
1987
635
as 'dingleyi'
ICN
Proliferodiscus dingleyae Spooner 1987
NZ holotype
species
Proliferodiscus dingleyae
NEW ZEALAND: Hawkes Bay, Poronui, Upper Homestead, 2000', on bark of Nothofagus menziesii, 2 vi 1953, leg. J.M. Dingley, PDD18988 (Isotype), (Holotype, K);

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dingleyae

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On bark of Nothofagus menziesii, 600 m., Upper Homestead, Poronui, Hawkes Bay district, 2.6.1953, Dingley 18988.

Proliferodiscus dingleyae Spooner 1987

[Notes from Kew Type specimen, PRJ 2010] Kew images.
[Notes from Kew Type specimen, PRJ 2010] Additional collection, duplicate from PDD 19363

Proliferodiscus dingleyae Spooner 1987

NEW ZEALAND: Hawkes Bay, Poronui, Upper Homestead, 2000', on bark of Nothofagus menziesii, 2 vi 1953, leg. J.M. Dingley. P.D.D. 18988 (Holotype, K); Otago, Fiordland, Secretary Island, on rotten wood, 13 ii 1960, leg. R.R. McNabb, P.D.D. 19363.
APOTHECIA occurring in swarms, often clustered and deformed by mutual pressure, frequently proliferating from the disc, superficial, short-stipitate. DISC up to 1 mm diam., concave, pale orange, darker and with inrolled margin when dry. RECEPTACLE shallow cupulate, densely clothed with white hairs. STIPE short, stout, cylindric, similarly clothed with hairs. HAIRS most 50-60 x 2.5-3.0 µm, hyaline, cylindric, straight or flexuous particularly on the stipe, obtuse, thick-walled, coarsely granulate, bearing irregular lumps of amorphous resinous matter up to 2.5 µm diam. ASCI 42-48(-51) x 3.5-5.0 µm, 8-spored, cylindric-clavate, tapered below to a short, stout base, apex rounded or bluntly conical, pore not staining blue in Melzer's reagent. ASCOSPORES 4.3-7.0 x 1.0-1.7, mean 5.7 (SD 0.7) x mean 1.3 (SD 0.1) µm, hyaline, cylindric or cylindric-fusoid, often slightly clavate, straight, non-septate, smooth, irregularly biseriate. PARAPHYSES hyaline, filiform, often slightly pointed at the apex, septate, often branched below, 1.0-1.5 µm diam., exceeding the asci by up to 10 µm. SUBHYMENIUM not clearly differentiated. MEDULLARY EXCIPULUM composed in the receptacle of narrow, loosely interwoven hyaline hyphae 1.0-2.5 µm diam., more densely woven in the stipe and often broader, 2-3 µm diam., sometimes with a dextrinoid reaction in Melzer's reagent. ECTAL EXCIPULUM up to 60 µm thick at the base of the receptacle, narrowing towards, the margin, composed of agglutinated sub-parallel hyphae forming narrow prismatic cells with slightly thickened walls, mostly lying at a low angle to the surface, more irregularly arranged at the base of the receptacle and in the stipe not differentiated as a distinct layer. Stipe tissue composed throughout of agglutinated, closely interwoven hyphae forming interwoven hair-like hyphae at the surface and interwoven subiculum-like hyphae ramifying onto the substrate at the base.
New Zealand.
On bark of Nothofagus menziesii and on rotten wood.
Apothecia superficialia, brevistipitata, dense gregaria, e disco saepe proliferantia. Discus usque 1 mm diam., concavus, pallide aurantiacus. Receptaculum leviter cupulatum, pilis albis dense vestitum. Stipes brevis, crassus, cylindricus. Pili 50-60 x 2.5-3.0 µm, hyalini, cylindrici, recti vel flexuosi, obtusi, grosse granulati, parietibus crassis. Asci 42-48 x 3.5-5.0 µm, 8-spori, cylindrico-clavati, apice rotundati vel truncato-conici, poro in Melzero non caerulescente. Ascosporae 4.3-7.0 x 1.0-1.7 µm, hyalinae, cylindrico-fusoideae, non-septatae. Paraphyses filiformes, hyalini, 1.0-1.5 µm diam., ascis usque 10 µm longiores. Excipulum ectale basi receptaculi usque 60 µm crassum marginem versus angustatum, ex hyphis agglutinatis cellulis angustas prismaticas angulum redactum cum superficiei efformantibus. Textura stipitalis omnis ex hyphis dense intertextis agglutinatis basi hyphas subiculiformes intertextas efformantibus sistens.

The holotype collection was previously reported by Dennis (1961) as Dasyscyphus inspersus (Berk. & Curtis) Saccardo (= Proliferodiscus inspersus (Berk. & Curtis) Haines & Dumont). Though closely related to that species, it differs in having larger asci which lack a blue pore in Melzer's reagent, larger, less clavate spores and less flexuous hairs. However, the apothecia proliferate from the disc in the same fashion as those of P. inspersus, and are generally very similar in appearance. Proliferodiscus dingleyi differs from P. earoleucus (Berk. & Broome) Haines & Dumont, which similarly has an iodine negative ascus pore, in having larger asci and spores and in lacking the dense covering of strongly curled and interwoven hairs characteristic of that species. The apothecia of P. earoleucus commonly have multibranched stipes but evidently only infrequently proliferate from the disc.

Apothecia of P. dingleyi are structurally similar to those of the type of the genus, although the subiculum -like hyphae may be scarcely evident at maturity. Nevertheless, these hyphae can be observed in vertical section and are more obvious in young apothecia. The excipular tissue does exhibit a dextrinoid reaction, though this is somewhat inconstant and frequently indistinct.

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Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner (1987)
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner (1987)
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner (1987)
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner (1987)
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner (1987)

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Proliferodiscus dingleyae Spooner 1987
[Not available]

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taxonomic status
There are two phylogenetically distinct, Proliferodiscus dingleyae-like sister taxa. [PRJ, 2021]
typification
NEW ZEALAND: Hawkes Bay, Poronui, Upper Homestead, 2000', on bark of Nothofagus menziesii, 2 vi 1953, leg. J.M. Dingley, PDD18988 (Isotype), (Holotype, K);

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1cb19ce3-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2000
15 December 2003
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