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

Lachnellula calyciformis (Battarra) Dharne
no common name

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

Introduction to the Macrofungi

© Jim Riley  Email the photographer   (Photo ID #23522)

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Distribution of Lachnellula calyciformis
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Species Information

Features include a small cup with white hairs on the exterior and the margin, a bright orange-yellow upper surface, a short stem, gregarious growth on bark and wood of conifers, and microscopic characters including paraphyses that are usually unswollen at the tip. Bingham(2) have provided means of separating this species from Lachnellula agassizii (see SIMILAR), but Seaver(2) says this, "The differences are so slight that it seems to the writer a question whether or not they should be separated." This species should not be confused with Lachnellula calycina or Lachnum calyculiforme (the latter a synonym of Brunnipila calyculiforme with brown hairs), or with Lachnum calycioides (also known as Brunnipila calycioides).

Lachnellula calyciformis is found in CA (Desjardin(6)). O. Ceska has identified it from BC and deposited collections at the University of British Columbia. J. Lindgren has deposited collections from WA at the University of Washington.
Upper surface:
0.15-0.3cm across, saucer-shaped to shallowly cup-shaped, "margin inrolled in dry weather"; "yellowish orange to orange"; smooth except for the white marginal hairs, (Desjardin), 0.1-0.5cm across, orange to orange yellow, (Hansen, L.), 0.15-0.3cm, "cup-shaped to flat and saucer-shaped"; yellow to orange-yellow; smooth, margin thickly set with white hairs, (Breitenbach)
"covered with coarse, relatively long, white hairs" (Desjardin), thickly set with white hairs (Breitenbach)
"absent or tiny", 0.05-0.10cm x 0.02cm, cylindric, (Desjardin), attached to bark by short stem (Breitenbach)
spores 5-7 x 2.5-3 microns, elliptic, smooth, colorless; ascus apical pore inamyloid; "paraphyses filiform, septate"; external hairs colorless, "thin-walled to slightly thick-walled, septate, granular-incrusted" (Desjardin), spores 4.5-6.5 x 2.5-3 microns, elliptic, "with 2 oil-drops"; asci 45-63 x 4-5.5 microns, inamyloid; paraphyses filiform, 1.5 microns broad, "exceeding the asci"; hairs 3-4 microns wide, cylindric, colorless, (Hansen, L.(1)), spores 4.5-7 x 2.5-3 microns, oval, smooth, colorless; asci 8-spored, uniseriate, 45-55 x 4.5-5 microns, iodine negative; paraphyses "filiform, septate, sometimes slightly lanceolate"; hairs colorless, "multiply septate, thin-walled and finely encrusted", (Breitenbach), spores 4.0-7.5 x 1.5-3.5 microns, elliptic to oval, indistinctly biguttulate, paraphyses 45.0-77.0 x 1.0-3.0 microns, tips usually unswollen, (Bingham(2))

Habitat / Range

gregarious "on the bark of dead conifers (fir)"; in California fruiting "from spring through summer", (Desjardin), mostly on branches of Abies (true fir), but also on Picea (spruce) and Pinus (pine), (Hansen, L.), single or gregarious to cespitose, on dead branches of Abies and Picea, spring and fall, (Breitenbach)

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links


unknown (Desjardin)

Additional Photo Sources

Related Databases

Species References

Desjardin(6)*, Hansen, L.(1), Breitenbach(1)*, Bingham(1), Bingham(2), Seaver(2)

References for the fungi

General References