Public Note:
[GC] Pilei annual, crowded in linear groups associated with a delicate white subiculum, membranous, fragile, cupulate or as often infundibuliform, attached by or pendent from narrow bases, 0-1-0-5 mm diameter, 0-25-1 mm long; pileus surface white, tomentose, abhymenial hairs tortuous, tapering to bluntly acuminate apices, aseptate, unbranched, to 3 um diameter, walls 0.25 um thick, hyaline, densely encrusted with fine crystals; margin inturned, fimbriate; hymenial surface even, concave, white or ivory. Context white, to 60 um, thick, of parallel hyphae radiately arranged; generative hyphae to 3 um diameter, walls 0.2 um, thick, hyaline. Hymenial layer to 30 um, deep, a close palisade of basidia and paraphyses. Basidia clavate, 10-16 x 5-6 um, bearing 4 spores; sterigmata slightly arcuate, slender, to 5 um long. Paraphyses clavate, 8-12 x 4-5 um. Spores broadly obovate, pip-shaped, or subglobose, apiculate, 4-5.5 x 3.5-4-5 um, walls smooth, hyaline, 0-1 um thick. [Agerer] Fruitbody, sessile or very weakly stalked, hispid-setose, white, and 0.3 mm high and to 0.25 mm in diameter, single-scattered; with a clear, white subiculum. Edge hairs (1.5) 2-3 (3.5) tapering apically, rounded, with completely encrusted apex. Crystals finely-acicular to fine-rhomboidal, up to 1um long,in conc. Hydrochloric acid dissolving rapidly, dense fine-acicular hairs persisting in 10% KOH, only very slowly dissolving, apical walls slightly thick-walled. Walls up 1 um thick, colorless hyaline, in 10% KOH only very weakly swelling, not dextrinoid, with clamps at the base, secondary septa rare or absent. Very young apical edge hairs slightly enlarged. Subiculum +- obliquely projecting from the substrate, hyphae 1.5-2 um diameter, only slightly thick-walled, colorless-hyaline, including the tapering apical end encrusted with fine-acicular crystals to 0.5 um to long, basally with clamps.Trama obviously gelatinous, colorless hyaline, (1.5) 2-3 (3.5) umm in diameter, with clamps. Basidia 12-15(20) x (5.5) to 6-7, + suburniform, neither amyloid nor dextrinoid.
Substrate: Rubus australis (branch). Discussion: Flagelloscypha aotearoa belongs to the genus Flagelloscypha, although the marginal hairs are apically completely incrusted. Similarly shaped spores as they occur in F. aotearoa, occur in the genus for example, F. obovatispora and F polylepidis and F. orthospora These species have, however, clear, naked apical edge hair ends. The edge hair also have similar shaped crystals to F. polylepidis [?JAC] but they are coarsely acicular. Flagellosaypha aotearoa is distinguished from all other species in the genus by presence of a subiculum. Spores of the same form are known in Lachnella s.str, Calathella and Noahascypha. These genera do not have apically tapering hairs. [JAC] no material pigmented in water mount. Clamped. Spores (including apiculus) length=5.9–7.3µm (µ=6.6, σ=0.42), width=4.0–5.1µm (µ=4.5, σ=0.30), Q=1.3–1.7µm (µ=1.47, σ=0.10), n=20. Hymenium slighlty dextrinoid, otherwise no reaction. Current few number of sequences do support separate recognition of Lachnella and Flagelloscypha. I suspect spore morphology will turn out to be more informative than hair morphology and this, with broad spores, needs to be put back in Lachnella.
J.A. Cooper, 10/3/2015