|Major Groups > Gilled Mushrooms > Pale-Spored > Laccaria > Laccaria ohiensis|
by Michael Kuo
This little guy grows under hardwoods in eastern North America, and is one of several small, similar Laccaria species with orangish brown caps and flesh-colored gills. Thus, microscopic features--namely, the 4-spored basidia, and round spores featuring long spines that have very wide bases--must be matched in order to separate it reliably from Laccaria tortilis (basidia 2-spored, spores larger) and small forms of Laccaria laccata (spines on spores with skinnier bases), both of which can also associate with eastern North American hardwoods.
Ecology: Mycorrhizal with hardwoods; growing scattered to gregariously; not common; summer and fall; North American range not firmly established, but probably widely distributed, at least in the east.
Cap: 0.5-2.5 cm; convex, becoming flat and sometimes uplifted; often with a central depression; usually prominently lined or grooved; bald or finely hairy; orangish brown to dull reddish brown, fading to buff; changing color markedly as it dries out.
Gills: Attached to the stem; distant; pinkish flesh color.
Stem: 1.5-2.5 cm long; up to 2 mm thick; equal or with an enlarged base; bald or finely hairy; colored like the cap; with white basal mycelium.
Flesh: Thin; colored like the cap.
Odor and Taste Not distinctive.
Spore Print: White.
Microscopic Features: Spores 8-9 µ; globose to subglobose; ornamented with spines 1.5-3 µ long and 1.2 µ across at the base; inamyloid. Basidia 4-spored. Cheilocystidia usually present; filamentous or subcapitate. Pileipellis a cutis of elements 5-10 µ wide, with scattered bundles of upright elements; terminal cells subclavate to clavate.
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Cite this page as:
Kuo, M. (2010, December). Laccaria ohiensis. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/laccaria_ohiensis.html