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Page number:70 
Description type:Non-original description 
Description:PHELLINUS PINI (Thore. ex Fr.) Pilát, Atl. Champ. Eur. III (1). p. 517. 1942.
Fomes pini (Thore. ex Fr.) Karst., Bidr. Finl. Nat. 0. Folk. 37:79. 1882.
Boletus pini Thore, Chloris Dept. Landes, p. 487. 1803. Daedalea pini Brot. ex Fr., Syst. Myc. 1:336. 1821. Trametes pini Thore ex Fr., Epicr. Syst. Myc., p. 489. 1836-1838. Cryptoderma yamanoi Imazeki, Forsch. auf. dem. Geb. Pflanzenkrank (Japan) 4:176. 1951.
Basidiocarps sessile, effused-reflexed, or sometimes entirely resupinate; pilei solitary or imbricate, ungulate to applanate, up to 9 x 13 x 8 cm; upper surface light reddish-brown to blackish, hirsute toward the margin, becoming glabrous and incrusted with age, zonate and sulcate; margin reddish-brown and hirsute, or sometimes yellowish-brown (Antimony Yellow) and tomentose, rounded; pore surface yellowish-brown (Tawny-Olive to Yellow Ocher), the pores circular to angular or daedaloid, 2-3 per mm, with thick, entire dissepiments; context reddishbrown or yellowish-brown, lustrous on cut surface, corky, usually with one or more thin black layers, in younger specimens often appearing duplex because of the hirsute upper layer, up to 3 cm thick; tramal tissue continuous and concolorous with context, tubes light colored within, indistinctly stratified, each layer up to 6 mm thick. Contextual hyphae rarely branched, simple-septate, of two types, some brown in KOH, thick- or thin-walled, 3.5-7.5 µm in diam., others hyaline, thin-walled, 2-3 µm in diam; tramal hyphae similar.
Setae abundant, subulate to ventricose, 40-50 x 10-14 µm. Basidia broadly clavate, 4-sterigmate, 12-14 x 5-6 µm. Basidiospores ovoid, hyaline, smooth, negative in Melzer's reagent, 4.5-7 x 3.5-5 µm.
Type of rot - White pocket rot of the heartwood of living conifers. Cultural characteristics - See Campbell (1938), Fritz (1923), Davidson et al. (1938), Nobles (1948, 1958, 1965), and Owens (1936).
Substrata - Abies, Chamaecyparis, Larix, Libocedrus, Picea, Pinus, Pseudotsuga, Taxus, Thuja, and Tsuga.
Distribution - AK, AT, AZ, BC, CA, CO, ID, MT, NM, OR, SASK., WA, WY, and UT.
Voucher specimens - RLG 9407; RLG 6630 (ARIZ).
Remarks - P. chrysoloma is closely related and has been referred to as Fomes pini var. abietinus (Karst.) Overh. P. occidentalis is similar and can be distinquished by its host, Crataegus, and the associated uniform white rot. Boyce and Wagg (1955) have reported the pathogenic relationship of P. pini in stands of Douglas fir and a cyclic pattern of decay over a 450 year rotation.
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