Name: Fomes fasciatus
Author: (Sw.) Cooke
Citation: Grevillea 14(no. 69): 21 (1885)
Deprecated Synonyms: Boletus fasciatus Sw., Polyporus fasciatus (Sw.) Fr., Scindalma fasciatum (Sw.) Kuntze, Elfvingia fasciata (Sw.) Murrill, Elfvingiella fasciata (Sw.) Murrill, Polyporus sclerodermeus Lév., Polyporus marmoratus Berk. & M.A. Curtis, Myriadoporus dussii Pat., Fomes subfomentarius Romell, Fomes marmoratus (Berk. & M.A. Curtis) Cooke, Elfvingiella marmorata (Berk. & M.A. Curtis) Murrill
Gilbertson, R.L.; Ryvarden, L. 1986. North American Polypores. 1:1-443
Page number : 263
Remarks (public) : Fomes fasciatus and F. fomentarius have ranges that overlap slightly in Tennessee and North Carolina. Fomes fasciatus, however, is essentially a southern and subtropical species and F. fomentarius is a boreal species. F. fomentarius basidiocarps tend to be more consistently ungulate and typically have a concave pore surface. Basidiocarps of F. fasciatus vary greatly from applanate to ungulate and generally have a convex pore surface. Microscopically, they differ in the larger spores of F. fomentarius.
Description type : Non-original description
Description : Fomes fasciatus (Sw. :Fr.) Cke. Fig. 123.
Grevillea 14:21, 1885. – Polyporus fasciatus Sw.:Fr., Syst. Mycol. 1:3373, 1821. – Fomes marmoratus (Berk. et Curt.) Cke., Grevillea 14:18, 1885.
Basidiocarps perennial, sessile, ungulate to applanate, up to 10 × 18 × 10 cm, upper surface at first light brown, minutely tomentose, faintly zonate, soon becoming hard and crustose, glabrous, gray to dark brown or black, concentrically sulcate, zonate to completely black and azonate, pore surface light brown, darkening with age, the pores circular, 4-5 per mm, with thick, entire dissepiments, context lustrous golden brown on cut surfaces, distinctly to faintly zonate, fibrous, with a dark, hard, crustose upper layer up to 1 mm thick, sharply differentiated from fibrous context, a central core of granular, mottled tissue developing near substrate, tube layers indistinctly stratified, sometimes separated by a thin layer of context, tubes paler within.
Hyphal system trimitic, contextual generative hyphae with clamps, thin-walled, 2.5-4 µm in diam, difficult to find in mature specimens, contextual skeletal hyphae thick-walled, nonseptate, pale yellowish brown in KOH, with rare branching, 3-8 µm in diam, binding hyphae thick-walled, much branched, hyaline to pale yellowish brown in KOH, 1.5-4 µm in diam, irregularly shaped sclerids abundant in core tissue, thick-walled, golden to reddish brown in KOH, tramal hyphae similar except for sclerids.
Cystidioles fusoid, thin-walled, 20-25 × 6.5-8 µm, with a basal clamp. Basidia broadly clavate, 4-sterigmate, 19-22 × 8-10 µm, with a basal clamp. Basidiospores cylindric, hyaline, smooth, negative in Melzer’s reagent, 12-14 × 4-4.5 µm.
Type of rot. – White rot of heartwood of living hardwoods, also dead hardwoods.
Cultural characteristics. – See Campbell 1938 (as Fomes marmoratus ), Stalpers 1978 (as Fomes sclerodermeus).
Sexuality. – Unknown.
Substrata. – On living and dead hardwoods in numerous genera, also Nothofagus. Distribution.Southeastern U.S. and Arizona.
Literature: North American Flora, New York Botanical Garden., 1916
Elfvingia fasciata (Sw.) Murrill Bull. Torrey Club 30: 298 (1903)
Pileus hard, woody, dimidiate, applanate to ungulate, convex above, 7-10 × 8-15 X 2-6 cm.; surface finely tomentose, at length glabrous, concentrically sulcate, at first molecolored, changing to-umbrinous, and finally avellaneous with black fasciations; margin acute to obtuse, isabelline, sterile, undulate or entire: context punky, thin, ferruginous to fulvous, zonate, 3-5 mm. thick; tubes indistinctly stratified, 5-10 mm. long each season, avellaneous within, mouths circular, minute, 4-5 to a mm., edges obtuse, avellaneous to umbrinous, becoming darker when bruised: spores subglobose, smooth, light-brown, 5-7um; hyphae brown, 4-6um; cystidia none.
TYPE LOCALITY: Jamaica.
HABITAT : Dead trunks of various trees.
DISTRIBUTION : Gulf states and tropical America.
Created: 2011-06-26 15:39:44 PDT (-0700) by Darvin DeShazer (darv)
Last modified: 2018-04-05 05:15:04 PDT (-0700) by Herbert Baker
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