Proliferodiscus dingleyae Spooner 1987
Details
Biostatus
Nomenclature
Classification
Associations
Descriptions
Proliferodiscus dingleyae Spooner 1987
Proliferodiscus dingleyae Spooner 1987
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.