Basidiocarp annual, sessile and broadly attached, woody. Pileus 6.5-10.5 × 9-18.5 cm, up to 2.2 cm thick at the base, reniform, dimidiate, flabellate; upper surface pale to deep reddish brown to purple, becoming black or brown at base, weakly to strongly laccate, concentrically sulcate or not; margin obtuse, usually white. Pore surface yellowish green, bright yellow or yellow, becoming brown when bruising; tubes up to 1.2 cm long, pale brown; pores 5-6 per mm, 100-170 μm diam., dissepiments 30-100 μm thick. Context 0.1-1 cm thick, duplex, upper layer yellowish, lower layer yellowish brown or brown, with melanoid substances or whitish filaments; generative hyphae 2.5?6 μm diam., colorless, thin-walled, clamp-connexions difficult to observe in dried specimens; skeletal hyphae 5-6.5 μm diam., abundant, arboriform, yellowish brown to reddish brown in KOH, dextrinoid; binding hyphae difficult to distinguish from broken tapering ends of skeletal hyphae. Basidiospores 8-10 × 6.5-7 μm (with myxosporium), 7-8.5 × 5.5-6.5 μm (without myxosporium), ovoid, apically truncate or not, brown, with a dark brown eusporium bearing moderately conspicuous echinulae. Cutis composed of apically acanthus-like branched cells, weakly to strongly amyloid.
Specimens：
Taiwan: Hsinchu: Shihtaoshan, alt. 300 m, on trunk of dead angiosperm, 21 Aug 2005, Wu 0508-22 (TNM). Taichung, Takeng, on rotten wood, 27 Jul. 2003, FL 0307-3 (TNM). Nantou, Lienhuachih, alt. 700 m, on living tree, 24 Jun 1999, CWN 04257 (TNM); Lienhuachih, alt. 700 m, on trunk base of living tree, 06 Aug 2002, CWN 05622 (TNM); Lienhuachih, alt. 700 m, on rotten trunk of angiosperm, 19 Jun 1991, Wu 910619-38 (TNM).
Habitat：
null
Distribution：
Pantropical (Steyaert 1980, Zhao & Zhang 2000, this study).
References：
Wang, DM and Wu, SH.
Provided：
S. H. Wu and D. M. Wang
Note：
Ganoderma multiplicatum can be characterized by its rigid, sessile basidioma, duplex context, weakly to strongly amyloid cuticle cells with scattered small protuberances, and ovoid basidiospores with moderately conspicuous echinulae. The basidiospores, measuring 8-10 × 6.5-7 μm in the Taiwanese collections, are slightly larger than those found in the holotype, the latter measured as 7-8 × 5-6 μm (Ryvarden 2000) and 7-9 × 5-6 μm (Gottlieb & Wright 1999). However, the Taiwanese spore size falls within the range (7-8.7-12 × 5-5.9-7.5 μm) of this species as indicated by Steyaert (1980). The morphology of basidiomata of the collections from Taiwan agrees well with that of the holotype as described by Gottlieb & Wright (1999) and Ryvarden (2000).
Phylum：Basidiomycota >> Class： Basidiomycetes >> Order： Polyporales 
BCRC Number：