|Major Groups > Gilled Mushrooms > Dark-Spored > Lacrymaria echiniceps|
by Michael Kuo
Lacrymaria echiniceps is a woodland species found in the United States from the Great Plains eastward, featuring a cap and stem covered with brown scales and fibrils. The gills are attached to the stem, and become brown—almost purplish brown—with maturity; their edges are whitish and contrasting as a result of abundant microscopic cheilocystidia forming a sterile zone.
Similar mushrooms include Lacrymaria velutina, which is more likely to be found in grassy places than in woods and features a bald stem and larger spores—and various brown-spored species from Pholiota, Inocybe, and elsewhere; microscopic examination may be required to identify Lacrymaria echiniceps with confidence.
I would love to see a tiny "button" of this species some day, since it must be fuzzy, brown, and super cute; the scales and fibrils on the cap and stem of developing specimens result from a form of universal veil—a protective covering that covers the young mushroom and gets stretched out with development.
Psathyrella echiniceps is a former name.
Thanks to Susan Moody for collecting, documenting, and preserving Lacrymaria echiniceps for study; her collection is deposited in The Herbarium of Michael Kuo.
Ecology: Saprobic; growing on the ground alone, gregariously, or in groups in hardwood or conifer forests; summer through fall; originally described from New York; fairly widely distributed in the northeastern, mid-Atlantic, and Midwestern United States and adjacent Canada. The illustrated and described collections are from Illinois and Minnesota.
Cap: 3–6 cm; convex to bell shaped, becoming broadly convex, broadly bell-shaped, or nearly flat; dry; dull yellowish to dull brownish orangish under medium brown, fibrillose scales.
Flesh: Whitish to watery brownish; unchanging when sliced.
Odor: Not distinctive.
Spore Print: Dark purplish brown.
Microscopic Features: Spores 7–9 x 4–5 µm; ellipsoid to subamygdaliform, with a small pore; smooth; brown in KOH. Basidia 18–20 x 5–6 µm; abruptly clavate; 4-sterigmate. Cheilocystidia abundant, in a sterile zone; 55–75 x 5–7.5 µm; cylindric-flexuous, with clavate to subclavate or subcapitate apices; smooth; thin-walled; hyaline in KOH. Pleurocystidia 30–40 x 7.5–10 µm; more or less utriform; smooth; thin-walled; hyaline; scattered; sometimes grouped in twos or threes. Pileipellis a hymeniform layer of yellowish pyriform elements 20–50 µm wide, from which arise bundles of cylindric, brown, clamped elements 5–12.5 µm wide, with smooth or encrusted walls.
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Cite this page as:
Kuo, M. (2020, December). Lacrymaria echiniceps. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/lacrymaria_echiniceps.html