Name: Ganoderma orbiformum
Ganoderma orbiformum (Fr.) Ryvarden, Mycologia. 92(1), 187, 2000.
= Polyporus orbiformis Fr., Epicrisis Mycol p. 463, 1838.
Basidiocarp 14 × 12 × 5cm, biannual or perennial, pileate, dimidiate to sessile, corky, laccate. Upper surface flat to concave, sulcate, glabrous, laccate, deep reddish to chestnut brown becoming dark by age. Margin cream white (Fig. 2a). Pore surface creamy white in fresh specimen later ochraceous to pale brown. Pore 5 per mm, round. Tube dark brown, 10mm thick, without stratification. Context umber colour, up to 10 mm thick. Cutis type diverticulate, 40–46 × 9–12 μm (Fig. 4i). Hyphal system dimitic, generative hyphae 3.3– 5 μm diameter, pale yellow with clamp; skeletal hyphae 5–6.6 μm diameter, pale brown, thick walled. Basidiospore 8.3–10 × 6.6–7.5 μm, pale brown, ellipsoid truncate. SI: 1.2 (Fig. 3k).
Material examined – On living or dead tree of Leucaena leucocephala, Teacher’s Quarters (GA–15) (PUC).
Geographical distribution – Tropical species originally described from Guinea in Africa, but also known from Bonin Island, Puerto Rico, Brazil and Venezuela but also reported from Venezuela and Japan.
Created: 2011-06-26 15:39:45 PDT (-0700) by Darvin DeShazer (darv)
Last modified: 2018-09-03 07:31:05 PDT (-0700) by Chaelthomas (Chaelthomas)
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