|Major Groups > Gilled Mushrooms > Dark-Spored > Tubaria > Tubaria praestans|
[ Basidiomycota > Agaricales > Tubariaceae > Tubaria . . . ]
by Michael Kuo, 24 April 2023
Tubaria praestans is an apparently rare, poorly documented LBM (Little Brown Mushroom), originally described from France. Like other species of Tubaria it features a dull brown spore print and, under the microscope, spores that are pale brown and lack a pore. Within the genus it can be distinguished by its fairly large size (for a Tubaria), its silky-fibrillose cap, the presence of partial veil remnants on the cap and the stem, and, under the microscope, short and swollen cheilocystidia.
Naucoria praestans is a synonym.
Ecology: Saprobic; growing gregariously on the ground, often in disturbed-ground areas (ditches, paths, etc.); spring through fall; originally described from France (Romagnesi 1957); distributed in Europe and North America, with precise limits uncertain. The illustrated and described collection is from Michigan.
Cap: 1–3.5 cm across; convex at first, becoming broadly convex or nearly flat; dry; finely appressed-fibrillose; medium yellow-brown to orangish brown; the margin not lined; partial veil remnants often present.
Gills: Broadly attached to the stem; close; short-gills frequent; dull yellowish in buttons, becoming dull brown.
Stem: 2–4 cm long and 2–3 mm thick; more or less equal; very finely fibrillose; colored like the cap; basal mycelium white.
Flesh: Brownish; unchanging when sliced.
Odor: Not distinctive.
Chemical Reactions: KOH on cap surface dark reddish brown.
Spore Print: Brown.
Microscopic Features: Spores 8–10 x 4–5 µm; elongated-ellipsoid, with a tiny apiculus but without a pore; smooth; pale brown to dull yellowish in KOH; inamyloid; occasionally collapsing in both KOH and Melzer's mounts. Basidia 18–22 x 4–6 µm; clavate; 4-sterigmate. Cheilocystidia 15–25 x 10–15 µm; widely clavate to sphaeropedunculate; smooth; thin-walled; hyaline in KOH. Pleurocystidia not found. Pileipellis a cutis; elements 2.5–15 µm wide, smooth or encrusted, orangish brown in KOH. Clamp connections present.
REFERENCES: (H. C. L. Romagnesi, 1957) H. C. L. Romagnesi, 1957. (Kühner & Romagnesi, 1953; Moser, 1983; Migliozzi & Moreau, 2004; Antonin et al., 2012.) Herb. Kuo 09130802.
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Cite this page as:
Kuo, M. (2023, April). Tubaria praestans. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/tubaria_praestans.html