Phylum：Anamorphic fungi　>>　Class： Anamorphic fungi　>>　 Order： Anamorphic fungi 
   
 
　BCRC Number： 33168      
   
　Scientific Name： Penicillium citrinum
 
   
   
　Author：

Penicillium citrinum Thom, Bull. Bur. Anim. Ind. US Dep. Agric. 118: 61. 1910.

Subgenus: Furcatum
   
 
 
 
 
　Description： CYA, 25°C, 7 days: colony diameters 20-22 mm, center wrinkled, deep, somewhat floccose, subcenter radially sulcate, dense, velutinous, margin entire, narrow; mycelium white; co-nidiogenesis abundant, greyish green (25C-D3-5); exudate pale yellow (2A2-3); soluble pigment pastel yellow to light yellow (3A4-5); reverse brownish orange to brownish yellow (5C4-6) or light brown to yellowish brown (5D4-6). MEA, 25°C, 7 days: colony diameters 21-23 mm, plane, velutinous, margin entire, narrow; mycelium white; conidiogenesis abundant, dark green (26F4-5) to greyish green (26E4-5); exudate and soluble pigment absent; reverse greyish green (1C3-4) or yellowish grey-greyish yellow (4B2-3), margin yellowish white (1A2). G25N, 25°C, 7 days: colony diameters 11-18 mm, center convoluted, deep, dense, veluti-nous, sometimes somewhat raised, sulcate, more or less floccose, margin entire, submerged; mycelium white; conidiogenesis abundant, dull green (25D3-4, 27D3-4); exudate lacking; soluble pigment very faint, yellowish white (3A2); reverse greyish yellow (4B3-5) to light yellow (4A4-5). CYA, 5°C, 7 days: no germination.. CYA, 37°C, 7 days: colony diameters 11-14 mm, center wrinkled, deep, floccose, subcenter sulcate, dense, velutinous-floccose, margin narrow; mycelium white; conidiogenesis abundant, greenish white to pastel green (25A2-4); exudate yellowish white (1A2); soluble pigment absent; reverse blond-golden (4C4-5) or yellowish white (4A2). Conidiophores and conidia: conidiophores on MEA borne mostly from superficial myce-lium; stipes septate, apices vesiculate, up to 6.4 μm, 14-194 × 2.4-3.2 μm, smooth, thin-walled; penicilli mostly biverticillate, sometimes monoverticillate; metulae in verticils of 2-5, smooth, 9.6-29.6 × 2.0-3.2 μm; phialides in verticils of 3-21, ampulliform, smooth, 7.2-8.9 × 2.4-3.2 μm, collula gradually tapering, some with a length up to 2.4 μm; conidia subspheroidal to spheroidal, 2.0-3.6 μm, finely roughened, thin walled, borne in compact slender columns.
 
 
 
 
 
　Specimens：

Taiwan, Taipei City, National Taiwan University, from air contami-nant, 1 Jan 1990.
 
 
 
　Habitat： from air contaminant.
 
 
 
　Distribution：

Taiwan, Spain, Italy.
 
 
 
　References：

Tzean, SS et al. 1994.
   
   
   
　Provided：

S. S. Tzean and S. C. Chiu
 
 
　Note： widely distributed species, voucher culture CCRC 33168.