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Species Information
Summary: Also listed in Cups category. Features include black, cup-shaped fruitbodies, densely fine-hairy exterior, and stem and that is cylindric to shallowly fluted.
Collections were examined from BC, WA, ID, and also AB, MB, NT, NF, ON, PQ, SK, YT, AK, WI, Svalbard, Sweden, and Poland, and it has been reported from eastern North America and Asia, (Abbott). It has been recorded also from OR (Larsen).
Cap: 0.3-2.5cm across and 0.2-1cm high (up to 4cm across and 1.2cm high when fresh), deeply to shallowly cup-shaped; black and drying black; smooth; margin inrolled at first, expanding at maturity, (Abbott)
Underside: black or blackish brown; "often with white to grayish white marginal pubescence, densely pubescent to villose near margin, smooth or rarely with ribs extending onto basal quarter", (Abbott)
Stem: 0.2-2.9 x 0.05-0.8cm (up to 4cm long when fresh), equal or widened at base, solid, round in cross-section or slightly sulcate [grooved] or often slightly fluted especially at base, rarely strongly ribbed; black or very dark brown, often white or pale gray at base; pubescent, (Abbott)
Microscopic: spores 16.1-20.6 x 9.4-13(15) microns, broadly elliptic, smooth, colorless, with one droplet; asci 225-250 x 12.2-17 microns; paraphyses 4.1-8 microns wide at tip, clavate, enlarged gradually to abruptly at tip, brown, contents finely granular, (Abbott)
Habitat / Range
single or typically gregarious to numerous and scattered, often on bare soil, typically with willows in deciduous or mixed woods or tundra, typically June to August, but from May to September, (Abbott)
Similar Species
Other black species of Helvella (H. atra, H. pezizoides, and H. vespertina (as H. lacunosa)) have an irregular lobed head or cap, (Abbott).
