Basidiocarps globose to subglobose, larger than 1 cm ø; in section, consisting of a fleshy-fibrous core surrounded by a gelatinous outer layer; the top surface whitish, gelatinous, the base part close to the substrate yellowish white, dry pale yellow (specimen CCJ897) to brown (specimen CCJ925); inner nucleus on top white, inside yellowish white, compact, pink color when dry. Basidia two types: type I mostly globose to subglobose, 13-16 × 12-16 μm [Q=1.0-1.06]; type II broadly ellipsoid to pyriform, 19-23 × 12-14 μm [Q=1.36-1.92]; producing terminally or laterally, often in opposite pairs or alternately along the fertile hyphae, 2- or 4-spored, longitudinally or obliquely septate; sterigmata 2-3 μm ø, up to 65 μm in length, mostly swollen apically, up to 4-4.5 (6) μm ø, sometimes aciculate in soaked basidiocarps, up to 145 μm in length. Spores globose to subglobose, 6.5-10(-11) × 6-9(-10) μm [Q=1-1.23], germinating by budding, repetition, or germ tubes on the surface of soaked basidiocarps. Conidia not seen. Swollen cells abundant in the subhymenium and inner part of basidicarps, two types: type I subglobose to globose , 6.5-9 × 6-8 μm [Q=1.0-1.2]; type II ovate to ventricose, (18) 9-14 × 5-7 μm [Q=1.42-2.80]; thin walled, mostly germinating with clamped hyphae. Hyphidia abundant on the hymenium close to the substrate, 2-5(-7) μm ø, thin-walled. Hyphae thick-walled, gelatinous, clamped, 2-4 μm ø; hymenium amphigenous. Haustoria abundant close to the core, rare in the subhymenium, clamped, haustorial hyphae rarely branched.
Specimens：
Materials mostly grow on coniferous wood, occasionally on angiosperm wood. Taiwan, Taipei, Yangmingshan National Park, ca. 300m, on Stereum sanguinoletum on branches of Pinus taiwanesis, leg. C.-J. Chen, CCJ 897; Taiwan, Hsinchu county, Kuanwu Forest, 2000-2300 m, on Stereum sp. on branches of Pinus sp., leg. C.-J. Chen, CCJ 925; Germany, Baden-Württemberg, Tübingen, Rosenau, 460 m, leg. F. Oberwinkler, FO 35974.
Habitat：
null
Distribution：
null
References：
Bandoni, RJ. 1957; Bandoni, RJ. and Ginns, J. 1993; Chen, CJ. 1998; Lowy, B. 1971.
Provided：
C. J. Chen
Note：
The yellowish white basidiocarps of the Taiwanese specimens are morphologically very similar to Tremella encephala in Europe. In both cases two kinds of undescribed terminally swollen cells exist, subglobose to globose and ovate to ventricose. They are extremely smaller than the basidia. The swollen cells of specimen CCJ 897 are thin-walled, while they are thick-walled in the specimen FO 35974. In addition, in both specimens two basidial types occur, mostly subglobose to globose and rarely ovate to ventricose. They were measured together very often before (Lowy, 1971; Jülich, 1983). I recommend the basidial sizes should be described separately, not only for presenting the real measurements but for reducing improper data.
Tremella subencephala Bandoni & Ginns (Bandoni & Ginns, 1993), parasite of Acanthophysium lividocoeruleum (Karst.) Boidin is considered close to T. encephala, but differs from its host and thick-walled monokaryotic conidia, as well as size of basidia.
Meanwhile, terminally swollen cells in specimen CCJ 897 are thin-walled and always germinating to slender hyphae, ca. 1-2 μm ø, while in specimen FO 35974 they are relatively thick-walled and not germinating. According the description of Bandoni (1957), Tremella encephala has structures of thin-walled swollen cells, globose to obovate, and without germination. He assumed that this species is very closely related to T. aurantia. The two species have often been placed in a separate genus, Naematelia, before.
Phylum：Basidiomycota >> Class： Basidiomycetes >> Order： Tremellales 
BCRC Number：