Japewiella sp. A
Japewiella sp. A
Description:
Thallus: immersed in substrate.
Apothecia: flat, 0.4-0.6 mm diam., densly blue-grey pruinose, with thin, persistent proper margin.
Epihymenium: brownish, granular, granules dissolving in K.
Hypothecium: hyaline.
Paraphyses: slender (1-1.5 µm) with swollen (to 5 µm), pigmented cap, sparingly branched and anastomosing below, lax in K.
Exciple: composed of thin, radiating, astomosing hyphae, with swollen (c. 5 µm) cortical, dark brown (K+ red-brown) cells, hyaline within. Olivaceous (H+ blue-grey, N+ red) pigment also sometimes present.
Ascus: Lecidella-type; ascospores: 13-15 x 8-9 µm, simple, hyaline, thick walled (c. 1 µm).
Distribution:
Known only from two collections from worked timber (fence) and planted trees on the Falkland Islands.
Notes:
This taxon is referred to Japewiella because of the Lecidella-type ascus. However, the apothecia strongly resemble those of Palicella glaucopa (Hook. f. & Taylor) Rodr. Flakus & Printzen, but, unfortunately the specimens of this taxon have been on loan to another researcher for several years.