Phylum：Anamorphic fungi　>>　Class： Anamorphic fungi　>>　 Order： Anamorphic fungi 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Trichoderma crassum
 
   
   
　Author：

Trichoderma crassum Bissett, Can. J. Bot. 69(11): 2376 1992.
   
 
 
 
 
　Description： Colonies growing fast on Potato Dextrose Agar at 25℃, floccose to woolly, gray, nickel green to dull green after conidiation, reverse white or light yellow. Exudates pale yellowish, in small drops on aerial mycelium. Mycelium partly immersed, aerial mycelium abundant, composed of branched, septate, smooth, hyaline hyphae, 4 - 5μm wide. Conidiophores hyaline, septate, smooth, often irregular branched and bearing phialides at terminal ends. Primary branches arising in right angle, more or less curved, singly or in whorls of 2-3. second branches arising irregular, and bearing 2 – 3 phialides in the ends. Subterminal or lateral phialides, short and broad ampulliform, hyaline, smooth, constricted at the base, most in crowded whorls of 2 - 5, , 4.4 - 9.5 × 3.0 - 4.2 μm, Phialides born at conidiophores apex, broadly ampulliform, 18 - 20 × 2.5 - 4 μm. Conidia ovoid, ellipsoidal, green in mass, ends rounded, forming false-head at the ends of phialides, 3.7 - 5.3 × 2.6 - 3.7 μm.
 
 
 
 
 
　Specimens：

Taiwan, Jiashih, Hsinchu County, on decaying woods, Dec, 2007
 
 
 
　Habitat： On decaying woods
 
 
 
　Distribution：

Jiashih, Hsinchu County, Taiwan, Canada.
 
 
 
　References：

Bissett, J., 1992.
   
   
   
　Provided：

S. S. Tzean and T. W. Huang.
 
 
　Note： Trichoderma crassum is distinct by its more or less stout conidiophore, branches, metulae and swollen ampulliform phialides clustered in tight whorl, in contrast to most of the rest Trichoderma species.