Basidiocarps foliose, lobes caespitose, cartilaginous, undulate, 2-3 cm ø, reddish brown to dark brown when fresh, becoming black when drying. Basidia two types: type, I ±globose to subglobose, 12-14(-16) × 11-15 μm [Q=(0.80-) 0.90-1.14(-1.17)]; type II ellipsoid to oval, 13-19(-22) × 11-14 μm [Q=1.21-1.58(-2.05)], with very short stalks; both longitudinally or obliquely septate, 4-spored; mostly sterigmata 20-30 μm, up to 50 μm in length, 2-4 μm ø, not or slightly apically swollen, up to 5 μm ø; often subhymenial hyphae anastomosing. Spores subglobose to mostly broadly ellipsoid, 7-9 × 5-8 μm [Q=(1.13-)1.17-1.31], smooth, hyaline; germination by repetition, budding, or germ tubes, secondary spores mostly subglobose. Conidia absent. Vesicles absent. Gemmae ±globose to oval, 9-17 × 6-10 μm [Q=(0.95-)1.00-2.00(-2.62)], smooth, hyaline, thin-walled, but occasionally thick-walled. Hyphae smooth, hyaline, 2-4(-6) μm ø, up to 10 μm in subhymenium, mostly thick-walled, gelatinous, occasionally thin-walled in young stages, anastomoses frequent. Haustoria rare, clamped.
Specimens：
Taiwan, Hsinchu county, Kuanwu Forest, leg. C.-J. Chen, CCJ 914, on decayed Abies kawakamii, 2200 m; Taiwan, Taichung county, Tasheshan Forest, leg. C.-J. Chen, CCJ 1396.
Habitat：
null
Distribution：
null
References：
Bandoni, RJ. 1957; Bandoni, RJ et al. 1996; Bourdot, H and Galzin, A. 1928; Chen, CJ. 1998; Chen, PC and Hou, HH. 1979; Donk, MA. 1966; Kobayasi, Y. 1939; Lowy, B. 1971; Neuhoff, W. 1931; Neuhoff, W. 1936; Roberts, P and de Meijer, AAR. 1997.
Provided：
C. J. Chen
Note：
In young developmental stage chains of cells can be found in the hymenium which might be separated and function as conidia. The hymenial structure is similar to that of Tremella fuciformis, but the foliose and brown colored basidiocarps are characteristic for T. foliacea. Tremella foliacea sensu lato differs from T. fuscosuccinia CCJ 1136 and T. neofoliacea CCJ 1204 & 1401 by heavily anastomosing subhymenial cells, as well as shorter (20-30 μm) sterigmata. The taxonomic characteristics used by Bandoni (1957) do not allow further differentiation of the species under discussion.
The description of T. foliacea collected from Brazil (Roberts & Meijer, 1997) is distinguished from species from America (Bandoni, 1957) and in Europe (Neuhoff, 1931). Their basidiospores are significantly smaller than others. The spores they measured might be secondary spores or a different species but related to T. foliacea. If T. frondosa exists, Kobayasi's (1939) T. foliacea from Japan might be misinterpreted, because their specimens are pale yellowish brown like T. frondosa. Additionally, the conidia Kobayasi described are never reported from T. foliacea. The Table 15 indicates variable size of basidiospores and basidia of T. frondosa from literature. Tremella foliacea sensu lato is also close to Neuhoff's concept (1931) of T. frondosa.
Lowy (1971) described T. fimbriata collected from South America which is resembling to T. foliacea sensu Banoni (1957) by many respects, i.e. basidia, basidiospores and basidiocarps. Kobayasi (1939) published T. fimbriata collected from Japan, the photographs (Pl V, A & B) are evidently identical to my collections from Taiwan, despite of his basidiospores clearly larger than T. foliacea I describe it here. Neuhoff (1936) suspected that T. fimbriata, as interpreted by Fries (1822), was a form of T. foliacea. Donk (1966) believed that Neuhoff's suggestion is perfectly acceptable since the substrates are insignificant, particularly in excessively moist habitats on branches on the ground (T. foliacea from gymnosperm wood by Persoon and T. fimbriata from angiosperm wood by Fries). Lowy (1971) still separated this species from T. foliacea although many mycologists following Neuhoff (1931) synonymized it to be T. foliacea. It might be, if it is not the same at all, very closely related to T. foliacea, because their basidiocarps or basidia and basidiospores are similar.
Phylum：Basidiomycota >> Class： Basidiomycetes >> Order： Tremellales 
BCRC Number：