Summary:
The minute, convex, waxy-gelatinous, dark reddish brown fruitbodies grow on the lichen Nephroma: they are identified by microscopic characters. The description is derived from Diederich(1).
Tremella nephromatis is known from multiple collections in BC (Diederich(1), Diederich(2)). There is a collection from BC at the University of British Columbia.
Fruiting body:
"superficial, often developing on soredia of the host"; (0.01)0.06-0.4cm in diam, "strongly convex, subspherical when young, later often irregular, lobate or tuberculate, often alveolate"; dark reddish brown; consistency waxy-gelatinous; surface matte
Microscopic:
spores 5.5-8 x 5-6(7.5) microns, nearly round to elliptic, with a distinct apiculus; basidia "when mature, 1-septate, not constricted at the septum, septum longitudinal, oblique or transverse", 11-20 x 7.5-10 microns, epibasidia 20-26 x 2-3.5 microns, subcylindric; hymenium colorless, containing numerous probasidia, probasidial initials elliptic, proliferations occurring through the basal clamp connection; hyphidia and cystidia absent; hyphae of context 1-2 microns wide, thin-walled, clamp connections not seen; haustorial branches present but rare, mother cell ellipsoid, 3-4 x 2.5-3 microns, haustorial filament 2-11 x 0.5 microns; anamorph unknown
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