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 Add this item to the list  551569 Original description
Description type:Original description 
Description:Pileus 22–45 mm. diam.; hemisphaerical to convex; surface irregularly ridged and wavy, slightly glutinous in young fruitbodies, reddish orange (7B8) gradually paler (4A8) towards margin, orange to deep orange or light yellow to yellowish orange (5A7–8/ 4A5–6), turning deep orange to reddish orange (5–7A8) with KOH; margin entire with narrow sterile flap of tissue. Pore surface slightly depressed near stipe, pastel yellow (2A4) to lemon yellow, unchanging when bruised; pore 2–3/mm, rounded, compound. Tube 11 mm long, adnate-sinuate, light yellow (1A4), unchanging when bruised. Stipe 80–105 ×10–13mm, central, often curved, with white basal mycelia, surface longitudinally striate-lacerate to squamulose or scabrate, with brownish yellow (5–6C8) squamules on yellowish background (2–3A4–5). Context solid
in pileus and stipe; context (pileus and stipe) pale yellow (1A3), soon becoming distinctly pinkish white to light pink when exposed. Pileus context turning deep yellow (4A8) with KOH, reddish grey (12D2) with FeSO4 but, unchanging with guiacol. Stipe context turning reddish grey (12D2) with FeSO4, unchanging with KOH and guiacol. Odour and taste indistinct.
Basidiospores 14–19 × 5.8–7 μm (x = 16.2 × 6.4, n = 20, Q=2.19–2.52–2.92), oblong to subfusoid, inequilateral, smooth under light microscope, olive brown. Basidia 33–53× 11–16μm, 4-spored, clavate to subclavate; sterigmata 4–7×1–1.5 μm. Hymenial cystidia 27–75 × 8.5–12 μm, common, subcylindrical, subfusiform to subappendiculate, content insignificant, often encrusted, incrustations distinct,
mainly located in concentric zones on neck. Tube edge fertile. Hymenophoral trama intermediate type. Pileipellis 110–150μm thick, ixotrichoderm, composed of erect septate hyphae, sometimes slightly interwoven; terminal cells 10–42×7–16μm, cylindrical to subfusoid to fusoid or ventricose, subclavate to clavate or rarely irregular, content slightly dense. Stipitipellis 100–130μm thick, fertile, composed
of hyphae, basidia and cystidia; caulocystidia 47–85 × 10–21 μm, subfusoid, fusoid, ventricose, ventricoserostrate to appendiculate; caulobasidia similar to tube basidia but less in number. Clamp connections absent in all tissues.
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