Punctularia strigosozonata (Schwein.) P.H.B. Talbot

[previously in Phlebia, Phaeophlebia]

Name
zoned phlebia; tree bacon, bacon strips (Lincoff); Finnish Karvaorvakka.
Etymology
Epithet = strigose-zoned. Genus = with little dots.
Fruitbody
Annual, effused (resupinate crust) or effused-reflexed stereoid or phlebioid fungus (resembles Stereum). Free edge is narrow to wider, rarely pileate (extending 3 cm or more). Upper surface zoned with weak or noticeable ridges (sulcate), light and dark brown to black, velvety hairy; margin paler. Underside smooth or bumpy (tuberculate) or ridged, dark brown, dark reddish brown, violaceus, to gray; gelatinous when fresh, drying hard and darker. Old herbarium specimens have underside mostly blackish and upper surface with dark brown and black zones; sometimes margin remaining brown. A key microscopic feature is the dendrohyphidia (dendrophyses, branched terminal cells) among the basidia (though these are obscure structures). Spores non-amyloid; cystidia absent; hyphal system monomitic, with clamp connections, but tramal hyphae thick-walled with sparse clamps and branches (so can look dimitic).
Similar species
Very similar to Phlebia (Merulius), particularly Phlebia radiata, though that species is brighter red to orange and rarely has a projecting cap-like edge. Texture is more leathery and coloration is darker than Stereum, which lacks clamp connections. Hymenochaete rubiginosa has setae, and lacks clamp connections. Xylobolus subpileatus is paler underneath and brittle when dry, lacks clamps, and has acanthocystidia. Lopharia cinerascens has gray hirsute upper surface, and has large pointed cystidia. Peniophora albobadia is mostly effused, with a white margin that is more fringed (under hand lens), and has encrusted cystidia in addition to dendrohyphidia.
Ecology
White rot saprobe on dead hardwoods. According to literature it prefers aspen (Populus such as P. tremuloides) in northern areas but found on other hardwoods to the south. Was recorded on poplar, oak, and hickory from Chicago area 1902, 1903.
Phenology
Starts growing in spring or summer and can be found into the winter.
Biogeography
Worldwide in temperate and subtropical regions. Throughout eastern North America and in Pacific Northwest.
Chicago Region status
Rare or uncommonly noticed. Collected four times in 2013 from Cook, DuPage, McHenry Counties in Illinois and Lake County, Indiana. Then identified a previous 2009 specimen from Lake County, Indiana. Later John Denk submitted a photo record for October 2006 in southern Cook County. Otherwise only known by several specimens from 1902, 1903, for Glencoe (on hickory log) and Riverside (on oak), Cook County, Illinois, and Miller (on dead poplar branches), Lake County, Indiana.
Specimens examined
Most of the specimens in the Field Museum herbarium were identified or verified by William Bridge Cooke (from IL, IN, WI, MI, OH, PA, NY, MA, VT).

Taxon Details and Links

Nomenclature
  • Punctularia strigosozonata (Schwein.) P.H.B. Talbot, Bothalia 7: 143 (1958)
  • ≡ Basionym: Merulius strigosozonatus Schwein., Transactions of the American Philosophical Society 4 (2): 160 (1832)
  • Phlebia strigosozonata (Schwein.) Lloyd, Mycol. Writ. 4 (Letter 46): 6 (1914)
  • Phaeophlebia strigosozonata (Schwein.) W.B. Cooke, Mycologia 48 (3): 401 (1956)
  • Stereum strigosozonatum (Schwein.) G. Cunn., Transactions and Proceedings of the Royal Society of New Zealand 84 (2): 213 (1956)
  • = Phlebia pileata Peck, Annual Report on the New York State Museum of Natural History 29: 45 (1878)
  • = Phlebia zonata Berk. & M.A. Curtis, Grevillea 1 (10): 146 (1873)
Type
New England, USA.
Taxonomy
The epithet strigoso-zonata previously had a hyphen but this is no longer the case following the guidelines of nomenclature. This is a variable species and has been named repeatedly with 14 heterotypic synonyms (other epithets based on different type specimens). The names Phlebia pileata and Phlebia zonata were also used for old herbarium collections.
See Lincoff's National Audubon Society Field Guide to North American Mushrooms (though the photo is too red)
Also see MycoBank (below)
Polish Bio-Forum photos
Russian mycoweb.narod.ru photos
University of California, Berkeley photos
iNaturalist
Mushroom Observer
MyCoPortal
MycoBank
Index Fungorum and Species Fungorum

Cite this page as: Leacock, P.R. (2017 Dec 25). Punctularia strigosozonata - MycoGuide. Retrieved from http://www.mycoguide.com/guide/fungi/basi/agar/cort/punc/punc/strigosozonata

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