syn.: Oligoporus, Spongiporus, Tyromyces- stipticus

Description:

Tyromyces stipticus (Pers. ex Fr.) Kotl. & Pouz. syn. Polyporus stipticus Pers. ex Fr. Weisser Nadelholzporling. Bracket 1–8cm across, 1–6.5cm wide, 0.5–3.5cm thick, semicircular or kidney-shaped, single or in small overlapping groups; upper surface uneven, milk-white. Taste bitter and stinging. Tubes 0.3–0.7mm long, white exuding whitish droplets in humid weather, which dry cream. Pores 1–5mm across, circular becoming more elongate, white to cream. Spores white, oblong-ellipsoid, 3.5–4.5 x 1.5–2.5um. Hyphal structure monomitic; generative hyphae with clamp connections. Habitat usually on dead conifers, less frequently on living trees. Season all year. Frequent. Not edible. Distribution, America and Europe.

Habitat:

location: North America, Europe edibility: Inedible fungus colour: White to cream stem type: Lateral, rudimentary or absent flesh: Flesh exudes white or watery latex (milk) when cut, Pore material cannot be seperated from flesh of the cap spore colour: White, cream or yellowish habitat: Grows in woods, Grows on wood ( http://www.rogersmushrooms.com/gallery/D... )

Notes:

Basidiocarps annual. sessile or effused-reflexed: pilei dimidiate to elongated, solitary or in small clusters, up to 6 x 11 x 2 cm: upper surface ivory to pale buff. azonate. often rough, glabrous. often with small black spots: margin concolourous; pore surface white to ivory, the pores circular to angular. 5-6 per mm. with thin dissepiments that become lacerate with age; context white. azonate. fissile. up to 1 cm thick.; tube layer concolourous and continuous with the context. up to 0.8 cm thick; taste very bitter. Hyphal system monomitic: contextual hyphae hyaline in KOH. occasionally branched. thin- to thick-walled. with clamps. 2-5 µm in diam: gelatinizing and swelling to 8 µm in diam: tramal hyphae rather thin-walled. with clamps, 2-2.5 µm in diam. Cystidia absent; fusoid cystidioles present. 15-17 x 4-4.5 µm. with a basal clamp. Basidia clavate, 4-sterigmate, 12-19 x 4.5-5.5 µm, with a basal clamp. Basidiospores oblong to short-cylindric, some slightly curved, hyaline, smooth, negative in Melzer's reagent, 3.5-5 x 1.5-2 µm. Type of rot. Brown cubical rot of dead conifers and hardwoods. Cultural characteristics. See Karik and Rennerfeldt 1957; Nobles 1958; Siepman and Zycha 1968; Stalpers 1978. Sexuality. Heterothallic and tetrapolar (David 1980). Substrata. Most commonly on conifers like Abies, Cedrus, Cupressus, Juniperus, Larix, Picea, Pinus and Taxus, occasionally on hardwoods like Acer, Alnus, Betula, Carpinus, Corylus, Fagus, Fraxinus, Prunus, Quercus, Salix, Sambucus, Sorbus and Tilia.. Distribution. Widespread in Europe wherever there are coniferous forest, circumpolar in the coniferous ecosystem ( http://www.mycobank.org/MycoTaxo.aspx?Li... )