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

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.

Taiwan, Keelung, common species, from rhizosphere of bamboo, 30 Dec 1988.

 Habitat: rom rhizosphere of bamboo.

Taiwan, USA, Zaire.


Tzean, SS et al. 1994.


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.