Phylum：Anamorphic fungi　>>　Class： Anamorphic fungi　>>　 Order： Anamorphic fungi 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Penicillium aculeatum
 
   
   
　Author：

Subgenus: Biverticillium

Penicillium aculeatum Raper & Fennell, Mycologia 40: 535. 1948.
   
 
 
 
 
　Description： CYA, 25°C, 7 days: colony diameters 32-34 mm, deep, sulcate, floccose, margin narrow, entire; mycelium yellowish grey to dull yellow (3B2-3), white or faint pinkish (9A2) to brownish grey brown (6E2-4); conidiogenesis moderate, greenish grey to greyish green (25B-C2-3, 26C2-3); exudate clear; soluble pigment absent; reverse greyish orange (5B3-5). MEA, 25°C, 7 days: colony diameters 41-43 mm, plane, floccose, entire somewhat raised, funiculose, margin narrow, entire; mycelium yellowish white to pastel yellow (1A2-4); co-nidiogenesis moderate to abundant, greyish green to deep green (29D-E6-8); exudate clear; soluble pigment absent; reverse yellowish white to light yellow (3-4A2-4) or yellowish grey to dull yellow (3B2-3). G25N, 25°C, 7 days: germination with limited growth. CYA, 5°C, 7 days: no germination. CYA, 37°C, 7 days: colony diameters 22-24 mm; deep, sulcate, floccose; margin broad, entire; mycelium pinkish (8A2), pinkish pale red (7A2-3, 9A2-3); conidiogenesis moderate, greenish-grey to dull green (27C-D2-3); exudate clear, greenish grey (29-30B2); soluble pigment absent; reverse pinkish to pastel red (7-8A2-4) or greyish green (30C-D3-4). Conidiophores and conidia: conidiophores on MEA borne from superficial and aerial mycelium; stipes septate, 98-288 × 2.0-2.8 μm, smooth, thin walled; penicilli mostly biverticillate; metulae in verticils of 3-8, smooth 9.5-11.1 × 2.4-3.6 μm; phialides in verticils of 4-7, acerose to somewhat ampulliform, smooth, 7.9-12.7 × 2.4-2.7 μm, collula gradually tapering; conidia spheroidal, 3.2-3.6 μm, very roughened to spinose, thin walled, borne in irregular columns.
 
 
 
 
 
　Specimens：

Taiwan, Keelung, common species, from rhizosphere of bamboo, 30 Dec 1988.
 
 
 
　Habitat： rom rhizosphere of bamboo.
 
 
 
　Distribution：

Taiwan, USA, Zaire.
 
 
 
　References：

Tzean, SS et al. 1994.
   
   
   
　Provided：

S. S. Tzean and S. C. Chiu
 
 
　Note： Under scanning electron microscopy, P. aculeatum conidial surface is spinose, in contrast P. verruculosum conidial surface is verrucose with striations.