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

Peziza badia Pers. ex Merat
red-brown cup

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

Introduction to the Macrofungi

© Kit Scates-Barnhart  Email the photographer   (Photo ID #18965)

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Distribution of Peziza badia
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Species Information

Features include saucer-shaped, undulating cup with the upper surface olive-brown, thin fragile reddish brown flesh, reddish brown underside that is furfuraceous especially toward the margin, absent stem, growth on ground (rarely on wood), and microscopic characters including spores with a reticulum of longitudinal ridges. The name Peziza badia has been used in the past for P. phyllogena (see SIMILAR).

Peziza badia is found at least in BC, OR, ID, and also AB, MB, NF, NS, ON, PE, PQ, AK, CA, CO, CT, FL, IA, MA, ME, MI, MT, NJ, NY, TN, VA, VT, and WI, (Elliott, M.E.(2)), and BC, WA, OR, ID, AB, AK, CA, CO, and NM, (Larsen). It is widely distributed in northern North America as well as AL and CA, (Phillips).
Upper surface:
3-7(10)cm, saucer-shaped, irregularly undulating; spore-bearing upper surface dark olive-brown, (Breitenbach), up to 8cm across, more or less cup-shaped but irregularly undulating when old; spore-bearing upper surface olive-brown, drying darker, (Dennis)
thin, fragile; reddish brown, (Breitenbach), thin, pale reddish brown with watery juice, (Dennis)
reddish brown; furfuraceous, especially toward margin, (Breitenbach), reddish brown, scurfy, especially toward margin, (Dennis)
none (Breitenbach, Dennis)
none in particular (Breitenbach)
none in particular (Breitenbach)
spores (15)17.5-18.5 x (8)10-11 microns, elliptic, with irregular reticulate ornamentation, colorless, usually with 2 droplets; asci 8-spored, 300-330 x (12)15 microns, positive reaction to iodine; paraphyses cylindric, septate, weakly clavate at tips, (Breitenbach), spores (14.0)15.3-20.0(21.5) x 7.6-9.6(11.0) microns (average 17.5 x 9.0 microns), "ornamented with short predominantly longitudinal ridges which unite to form an incomplete and irregular reticulum, ridges about 0.5 microns in height, apiculus not seen", pale yellow-brown in IKI and the outer wall with a blue tinge, colorless to nearly colorless, in apical (110)125-140(180) microns of ascus, uniseriate, (one-)two-guttulate; asci 8-spored, (250)270-335(365) x (13.5)15.0 microns, cylindric, tapering slightly in lower part, forming a foot at the base, rounded to truncate at top, tip J+ in IKI and faint blue extending down ascus wall to third or fourth spore; paraphyses "not numerous, slightly longer than asci, septate, branched near base, slightly wider at tip, about 5.0 microns, often slightly roughened at tip", (Elliott, M.E.(2)), spores 17-20 x 9-12 microns, elliptic, ornamented with short ridges that tend to unite to form an irregular reticulum, mostly with 2 oil droplets but one often larger than the other; asci up to 330 x 15 microns; paraphyses straight, slightly clavate, (Dennis)

Habitat / Range

gregarious on path embankments, in forests, on bare sandy ground, commonly on freshly broken sandy-loamy soils, June to October, (Breitenbach), on ground in hardwood, coniferous or mixed woods, in two collections only from rotten or buried wood, (Elliott, M.E.(2)), on ground in woods, especially on sandy soil, (Dennis)

Synonyms and Alternate Names

Corticium expallens Bres.
Laeticorticium expallens (Bres.) J. Erikss. & Hjortstam

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

Additional Photo Sources

Related Databases

Species References

Breitenbach(1)*, Korf(5), Elliott, M.E.(2), Larsen(1), Phillips(1)*, Schalkwijk-Barendsen(1)*, Miller(14)*, Courtecuisse(1)*, Dennis(1), Pfister(5) (note 32), Ginns(9) (discussing P. phyllogena as P. badioconfusa), Buczacki(1)*, Harmaja(4)

References for the fungi

General References