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Species Information
Summary: Tremella cladoniae produces minute fruitbodies, at first inducing the formation of pinkish brown convex galls on its host, the lichen Cladonia, later forming reddish brown fruitbodies that are subspherical, tuberculate or irregular in form, identified by microscopic characters including asteroconidia. The description is derived from Diederich(1).
It is found in BC, WA, FL, MD, NC, VA, and Colombia, (Diederich(2)), and FL, Denmark, France, Germany, Luxembourg, Romania, Sweden, Switzerland, and Papua New Guinea, (Diederich(1)).
Fruiting body: at first "inconspicuous, inducing the formation of pinkish brown convex galls on the host thallus", later "distinctive, reddish brown, subspherical, tuberculate or irregular in form", 0.01-0.22cm in diam
Microscopic: spores 7-10 x 6-8 microns, subspherical, with a distinct apiculus; basidia 2-spored, when mature "with one transverse septum in the upper third or quarter of the basidium, not constricted at the septum", epibasidia 2.5-4 microns thick, at least 30 microns long, cylindric; hymenium colorless, 40-65 microns thick, "containing numerous probasidia, mixed with conidiogenous cells when old", "probasidial initials elongate, claviform, diameter reaching its maximum close to the apex", proliferations occurring through the basal clamp connection; hyphidia and cystidia absent; hyphae of context 1.5-2.5 microns wide, thin-walled, clamp connections not observed; haustorial branches frequent, tremelloid, mother cell subspherical to ellipsoid, 2.5-4 microns wide, haustorial filament 1-5 microns long; anamorph: asteroconidia present in older fruitbodies, 9-11 microns in diam, with 4 arms, each 2.5-5 microns long, conidiogenous cells 21-27 x 1.5-2.5 microns, with several irregular branches 1-4 microns long close to apex
Habitat / Range
on Cladonia spp., most commonly on epiphytic specimens of sect. Cladonia (C. coniocraea, C. fimbriata, C. ochrochlora), rarely on terricolous specimens of sect. Perviae (C. furcata); "generally confined to the squamules of the primary thallus, but can occasionally also grow on higher parts of the podetia", (Diederich(1)), also on C. pyxidata, C. macilenta, (Diederich(2))
Similar Species
Syzygospora bachmannii grows on the podetia of the host and has generally a more reddish brown color as well as different microscopic characters, (Diederich(1)).
