Name: Fomitopsis P. Karst.
Most Confident Observations:
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Copyright © 2017 Kingman Bond Graham (Kingman)
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Copyright © 2015 Richard Kneal (bloodworm)
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Copyright © 2012 Sam Linse (BearwoodSam)
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Copyright © 2015 Dan Molter (shroomydan)
Version: 4
Previous Version 


First person to use this name on MO: Alan Rockefeller
Editors: Erlon, Chaelthomas

Nomenclature:

Rank: Genus

Status: Accepted

Name: Fomitopsis

Author: P. Karst.

Citation: Meddn Soc. Fauna Flora fenn. 6: 9 (1881)

Deprecated Synonyms: Ungulina, Piptoporus P. Karst., Pilatoporus Kotl. & Pouzar

Misspellings: Fomentopsis, Pitptoporus

Classification:
Notes on Taxonomy: [Edit]

Type name :
Boletus pinicola Sw., Kungl. Svenska Vetenskapsakad. Handl.: 88 (1810) [MB#233249]

Habitat: On live and dead trunks and logs of conifers and hardwoods, caus-
ing a brown cubical rot.
Basidiomata sessile, reflexed, or infrequently effuse, perennial, woody, in two species pink throughout; pileus applanate, triquetrous or hoof-like, convex, medium to large; pileus surface tomentose becoming glabrous, initially a pa- per-thin, glabrous membrane, then crustose, rimose, resin-crusted, smooth, shiny or dull, often zonate, chalky white or tan, pale pink, reddish brown, or brownish black; context white, pallid, pink, pinkish brown, chalky and fri- able, corky to rigid, fibrous to woody, up to 12 cm thick; tubes stratified, each layer 3–20 mm deep; pore surface white, ivory, cream, pale pink, beige brown to brown with a pink tint; pores round to angular, 3–5 per millimetre.
Hyphal systems dimitic and trimitic. Generative hyphae 2–7 μm diam- eter with clamp connections; skeletal hyphae 2.5–6.0 μm diameter, rarely branched; binding hyphae 1.5–4.0 μm diameter; gloeoplerous hyphae only in F. officinalis, abundant in context, typically sinuous, infrequently branched, up to 13 μm diameter, contents intensely coloured in stains, such as phloxine or cotton blue; sclerids in the context, apparently disarticulated, swollen hyphal segments, up to 20 × 9 μm, walls hyaline, thick; cystidioles in several species, fusoid, ~ 4–5 μm diameter; cystidia only in F. pinicola, slenderly clavate with an elongated stipe, up to 150 × 10 μm, projecting through the hymenium up to 90 μm, walls hyaline, thin or thickened at the base; ba- sidia clavate, 14–25 × 4.0–8.5 μm, four sterigmate; basidiospores cylindri- cal, straight, or curved, 5.0–7.5 × 1.5–2.5 μm or ellipsoid to broadly ellipsoid, 4–9 × 3.0–4.5 μm, walls hyaline, thin, smooth, neither amyloid nor dextrinoid.
1a Basidiomata pink throughout ……………………………………………………..2
1b Basidiomata not pink…………………………………………………………………3
2a Basidiomata typically applanate and sessile, sometimes reflexed or effuse, preferring Douglas-fir forests; basidiospores cylindrical, curved, 1.5–2.0 μm wide………………………………. F. cajanderi
2b Basidiomata typically hoof-like and sessile, preferring higher-elevation spruce forests; basidiospores cylindrical, straight, 2–2.5 μm wide …………………………………………………….. F. rosea
3a Basidiomata on conifers……………………………………………………………. 4
3b Basidiomata on hardwoods………………………………………………………… 5
4a Pileus surface chalky, white; context white, chalky, friable; taste very bitter…………………………………………………………. F. officinalis
4b Pileus surface a smooth, hard, yellow brown, dark red to black crust; context tough-fibrous or woody; taste mild or slightly acid ………………………………………………………………… F. pinicola
5a On live or dead trees, typically on Quercus species ……………. F. spraguei
5b On standing dead trees and logs of Populus tremuloides …………………. 6
6a Pileus surface near white, ochreous, buff to black; basidiospores 4–5 μm long………………………………………………………………. F. ochracea

Descriptions: [Create]

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Created: 2007-01-12 13:25:19 PST (-0800) by Alan Rockefeller (Alan Rockefeller)
Last modified: 2018-03-28 02:20:17 PDT (-0700) by Chaelthomas (Chaelthomas)
Viewed: 583 times, last viewed: 2018-08-07 02:53:22 PDT (-0700)
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