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6 Wood Discoloration

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8.5 Damage to Structural Timber Indoors 215<br />

Fig.8.19. Donkioporia expansa a Fruit body and mycelium. b Detail showing the long pores.<br />

c Old mycelium. d Strand-like structures grown on wood in laboratory culture; Antrodia<br />

vaillantii e Mycelium and strands. f Fruit body and detail. g Antrodia sinuosa fruit body<br />

and detail. h Antrodia xantha fruit body and detail. i Antrodia serialis fruit body and detail.<br />

j Oligoporus placenta fruit body and detail (photos b–j: T. Huckfeldt) — 5 cm, --- 5 mm<br />

circular to angular pores/mm, often amber guttation drops, which leave behind<br />

small black pits when dry; trimitic; ellipsoid spores 4.5−7 × 3.2−3.7µm;<br />

Mycelium (Fig. 8.19a,c): inside wood shakes and cavities, at high air humidity<br />

also on free wood surfaces with thin, skin-like mycelial flaps with bizarre<br />

seeds, later thick, brownish surface mycelium, guttation as on fruit bodies,<br />

black demarcation lines between mycelium and woody substrate;<br />

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