Limacella is a genus of fungi within the family Amanitaceae, order Agaricales, kingdom Fungi. The genus comprises a group of gilled mushrooms that are primarily characterized by their distinctly viscid or slimy caps, a feature that gives the genus its name (from Latin "limax," meaning slug).
Description
- Cap: The cap (pileus) is typically convex to broadly convex or plano-convex, often with a central depression in mature specimens. Its most distinguishing feature is the surface, which is notably viscid, slimy, or glutinous, especially when moist. The color can vary, often appearing white, cream, yellowish, or brownish.
- Gills: The gills (lamellae) are typically free from the stipe, or nearly so, and are usually white to creamy or pale yellow. They are often crowded.
- Stipe: The stipe (stem) is central, slender to moderately stout, and lacks a universal veil remnant forming a volva at the base (a key differentiator from the related genus Amanita). However, a partial veil may be present, forming a fragile, often evanescent ring (annulus) or leaving fibrillose remnants on the upper stipe. The stipe surface can be smooth, pruinose, or sometimes with fine scales.
- Spore Print: The spore print is white.
- Spores: Microscopically, the spores are typically smooth, broadly ellipsoid to globose, and may be amyloid (staining blue with iodine-based reagents) or inamyloid depending on the species.
- Flesh: The flesh is generally soft and white, without a strong odor or taste, though some species may have a slight mealy or radish-like scent.
Habitat and Distribution
Limacella species are saprobic, meaning they obtain nutrients from decaying organic matter. They typically grow terrestrially on soil in various types of forests, including coniferous and broadleaf woods, or sometimes in grassy areas. They are found across temperate and subtropical regions worldwide, though they are not considered common mushrooms.
Etymology
The genus name "Limacella" is derived from the Latin word "limax," meaning "slug," referring to the characteristic slimy or viscid surface of the cap, which can resemble the trail left by a slug.
Edibility
The edibility of Limacella species is generally considered to be unknown or inedible. While some species are not known to be toxic, their overall lack of culinary appeal due to their slimy texture and mild flavor means they are not sought after for consumption. A few species are suspected of causing mild gastrointestinal upset if consumed, but no fatally poisonous species are known within the genus.