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Page number:505 
Remarks (public):P. chrysoloma is closely related and has been referred to as Fomes pini var. abietinus (P. Karst.) Overh. The occurrence on pine and the wider setae (7-11 µm wide in P. chrysoloma) will generally separate the two species.
There is considerable confusion as to citations of authors of this species because of the homonyms cited above. When Pilát transferred Boletus pini Thore to Phellinus in 1942, he made an illegitimate combination because of Ames' earlier combination even if Thore's name is the earliest basionym. The type of Fries name is in the Uppsala herbarium even if he based his name on Boletus pini Broterius, an illegitimate homonym. What Fries actually did, not being aware of it of course at that time, was to coin a nomen novum. Broterius name should therefore not be cited in connection with Daedalea pini Fries. The latter name will therefore be the basionym for the species described above, since Fries' names in Systema Mycologicum have priority over all previous names.
There are intersterility groups in the P. pini-complex, and sibling species may be involved, see Fischer, M IG-322/3, Abstracts, 4th International Mycological Congress, Regensburg, 1990.
 
Description type:Non-original description 
Description:Phellinus pini (Fr.) A. Ames, Ann. Mycol. 11:246, 1913. - Daedaleapini Fr., Syst. Mycol. 1:336, 1821. - Boletus pini Thore, Chloris Dept. Landes, p. 487, 1803. - Boletus pini Broterius, Flora Lusit. 2:468, 1804 (nomen illegit. non Thore 1803). See below for further remarks.
Basidiocarps perennial, 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 towards the margin, becoming glabrous and encrusted with age, zonate and sulcate; margin reddish-brown and hirsute, or sometimes yellowish-brown and tomentose, rounded; pore surface yellowish-brown, the pores circular to angular or daedaleoid, 1-3 per mm, with thick, entire dissepiments; context reddish-brown 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 the context, tubes light colored within, indistinctly stratified, each layer up to 6 mm thick.
Hyphal system dimitic; contextual hyphae rarely branched, simple-septate, of two types, skeletal hyphae brown in KOH, thick-walled, 3.5-7.5 µm in diam; generative hyphae hyaline, thin-walled, 2-4 µm in diam; tramal hyphae similar.
Setae abundant, subulate to ventricose, thick-walled, 40-60 x 11-15 µm.
Basidia broadly clavate, 4-sterigmate, 15-18 x 5-6 µm, simple-septate at the base. Basidiospores ovoid, hyaline, or becoming slightly yellowish in older hymenia, smooth, negative in Melzer's reagent, 4.5-6(7) x 3.5-5 µm (Cerny 1985 indicates 6-7(8) x 4.5-6 µm).
Type of rot. White pocket rot of the heartwood of living conifers. The decay and fruiting at branch stubs is commonly in the middle and upper trunks but P. pini occasionally causes a butt rot and fruits near the base of the tree.
Cultural characteristics. See Campbell 1938; Fritz 1923; Davidson et al. 1938; Nobles 1948, 1958, 1965; and Owens 1936.
Sexuality. Heterothallic and bipolar (Fischer 1987).
Substrata. On living conifers, in Europe apparently known only from Pinus spp. In North America on other conifers as well.
Distribution. Widespread in coniferous forest regions of Europe and circumglobal.
 
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