Larissia
Larissia Raitv., IF: 542267
Apothecia superficial, scattered, broadly sessile, yielding a small amount of pale yellow hue when mounted in KOH. Disc pale greyish brown to yellowish brown when fresh, cinnamon brown to dark greyish brown when dry. Receptacle turbinate, externally greyish black at the base, brownish at the flanks becoming gradually paler to almost whitish at the margin. Ectal excipulum of textura globulosa at the base, cells with medium thick dark brown walls, becoming textura prismatica to textura porrecta at the flanks, cells more or less, and often irregularly, thick-walled, medium to dark brown, arranged into more or less regular rows giving rise to clavate subhyaline cells close to the margin. Asci arising from a crozier, broadly clavate, 8-spored, apical pore blue in MLZ. Ascospores ellipsoid, at first hyaline, at maturity dark brown with thick wall, aseptate, with 2 lipid globules. Paraphyses cylindric-clavate, gradually widening toward apex, not exceeding the asci, hyaline.
Type: Larissia pyrolae Raitv.
Reference:
Raitviir, A. 2008. The Helotiales of the Magadan and Chukotka areas of the Russian Arctic. – Sommerfeltia 31: 179-190.
Recent Genus
RutstroemiaXeropilidium
Ionomidotis
Recent Species
Encoelia furfuraceaRutstroemia tiliacea
Xeropilidium dennisii