Phylum:Basidiomycota >> Class: Basidiomycetes >>  Order: Tremellales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Tremella tropica

Tremella tropica C.-J. Chen, Bibliotheca Mycologica 174: 1-225. 1998.

 Description: Basidia subglobose to ellipsoid, (18-)19-21(-24) × (14-)15-17 μm [Q=1.13-1.33 (-1.40)], longitudinally or obliquely septate, mostly 4-, rarely 2-spored; sterigmata up to 170 μm, 3-4 μm ø, apically swollen up to 5-6 μm ø. Spores subglobose to ellipsoid, 12-13(-14) × 8-11(-12) μm [Q=(1.17-)1.20-1.36 (-1.50)], germinating by repetition, budding or germ tubes. Conidia monokaryotic, globose, 2-5 μm; occasionally becoming haustoria-like, producing short hyphae, ca. 0.5-1.0 μm ø; conidiophores globose or subglobose to ellipsoid, mostly 15-20 × 12-17 μm [Q=1.00-1.20(-1.24)], occasionally oval to fusiform, 22-28 × 13-16 μm [Q=1.67-2.22(-3.00)], thin-walled, hyaline, smooth. Vesicles absent. Swollen cells located in the lower part of mature basidiocarps, colorless, conidia-like, clampless, globose to subglobose, 2-7(-9) × 2-6(-7.5) μm [Q=1.00-1.11], sometimes ovoid, 4.5-8(-12) × 3-6 μm [Q=1.50-1.67(-1.85)], smooth, hyaline. Hyphidia rare, hyaline, smooth, thin-walled, gelatinous, clamped, 2-3(-4) μm ø. Hyphae hyaline, smooth, thin-walled, gelatinous, clamped, 2-4 μm ø. Haustoria rare, some formed by small globose or subglobose conidia with slender, single hyphae functioning as haustoria.

Taiwan, Nantou county, Chushan town, Tropical Botanical Garden of National Taiwan University, leg. C.-J. Chen, CCJ 1355. on branches of decayed wood.

 Habitat: null



Chen, CJ. 1998.


C. J. Chen

 Note: The yellowish orange basidiocarps of Tremella tropica resemble those of T. mesenterica macroscopically, but they are remarkably different from each other in micromorphology. The size of basidiospores of T. tropica are in the range of T. mesenterica, however they are clearly distinct from the conidial and hymenial structures. The conidia are frequently present in the whole basidiocarps of T. tropica. Meanwhile, the conidiophores and basidia grow from the same generative hyphae which were not found in T. mesenterica. The swollen conidiophores have been rarely investigated before in the genus Tremella. This new taxon is close to T. philippinensis, but their measurements of basidia and basidiospores are distinct enough to be separated. Some of conidia on the top of basidiocarps are perhaps function as haustoria. Although they are clampless, however, those conidia with shortly slender hyphae are definitely the haustoria type.