E-Flora BC: Electronic Atlas of the Flora of British Columbia

Annulohypoxylon multiforme (Fr.) Y.M. Ju, J.D. Rogers & H.M. Hsieh
no common name
Xylariaceae

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi

© Jim Riley  Email the photographer   (Photo ID #65787)

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Distribution of Annulohypoxylon multiforme
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Species Information

Summary:
features include 1) hemispheric fruitbodies growing on birch, 2) color rusty red to reddish brown, turning black, surface with hemispheric perithecial elevations with prominent conic openings, carbonous, interior tissue thin, black, and woody, 3) spores elliptic-inequilateral, brown, unicellular, with straight germ slit less than the full length of the spore; found North Temperate Zone including all states except southern, [presumably then including WA, OR, ID], Canada, Europe, and Asia, "not in tropics except at high altitudes and not in South Temperate Zone", collections examined from North America, Europe (including Belgium, France, United Kingdom), Asia (including India, China), (Miller, J.H.), throughout Asia, Europe, and North America, specimens examined from ID, PA, Germany, Sweden, China Nepal, (Ju(2)), reported from BC (Redhead(5), Callan(1))
Fruiting body:
stromata [fruitbodies] 0.5-4cm across and 0.15-0.7cm thick, "peltate, with convex top and constricted base, usually coalescent, with conspicuous perithecial mounds", surface dark brown to blackish brown, "blackish granules immediately beneath surface", wi
Microscopic:
SPORE 8.5-12 x 3.5-5 microns, ellipsoid-inequilateral, with narrowly rounded ends, light brown to brown, unicellular, with straight germ slit less than spore-length, perispore dehiscent in 10% KOH, smooth, epispore smooth; ASCUS 150-170 microns total length x 4.5-6 microns, the spore-bearing part 70-82 microns, the stem 75-100 microns long, with apical ring blueing in Melzer's reagent, discoid, 1 micron high and 2 microns broad; PERITHECIUM obovoid, 400-700 microns across and 500-700 microns high; ostiole conic-papillate, (Ju(2)), SPORE 8-12 x 3.5-5 microns, elliptic-navicular or inequilateral, light to dark brown, diagonally uniseriate; ASCUS 60-86 x 5-6.4 microns in spore-bearing part, cylindric, with stem 60-80 microns long; PARAPHYSES copious, "filiform, branched"; PERITHECIUM 800-1000 microns across, hemispheric, (Miller, J.H.)

Habitat / Range

occurs on Betula (birch) throughout Asia, Europe, and North America, seems highly host specific, (Ju(2)), on many woody plants, chiefly Betula, (Miller, J.H.)

Taxonomic and Nomenclatural Links


Genetic information (NCBI Taxonomy Database)
Taxonomic Information from the World Flora Online
Index Fungorium
Taxonomic reference: Ju(2) (as Hypoxylon multiforme), Hsieh(1), Miller, J.H.(1) (as Hypoxylon multiforme), Ju(3) (as Hypoxylon multiforme), Redhead(5) (as Hypoxylon multiforme), Callan(1) (as Hypoxylon multiforme)

Additional Range and Status Information Links

Additional Photo Sources

Related Databases

Species References

Ju(2) (as Hypoxylon multiforme), Hsieh(1), Miller, J.H.(1) (as Hypoxylon multiforme), Ju(3) (as Hypoxylon multiforme), Redhead(5) (as Hypoxylon multiforme), Callan(1) (as Hypoxylon multiforme)

References for the fungi

General References