Laccaria amethysteo-occidentalis

Laccaria amethysteo-occidentalis Scientific classification Kingdom: Fungi Division: Basidiomycota Class: Agaricomycetes Order: Agaricales Family: Hydnangiaceae Genus: Laccaria Species: L. amethysteo-occidentalis Binomial name Laccaria amethysteo-occidentalis Mueller, 1984 Synonyms Laccaria laccata var. amethysteo-occidentalis (Cooke) Rea Laccaria amethysteo-occidentalis Mycological characteristics gills on hymenium cap is convex or depressed hymenium is adnate or decurrent stipe is bare spore print is white ecology is mycorrhizal edibility: edible

Laccaria amethysteo-occidentalis is a mushroom found under conifers, usually pine, growing alone, scattered or gregariously in western North America.^[1]

Description

The cap is 1-7 cm; broadly convex to plane, becoming nearly flat with age; often with a central depression. The surface is nearly bald, or fibrillose to scaly. Cap is hygrophanous, dark purple, purple, fading to brownish purple or buff.^[2]

The gills are attached to the stem, sub-distant to distant, purple fading to dull lilac or grayish purple. The stem is 1.5-12 cm long and 0.5-1.5 cm thick, equal or slightly swollen at the base and strongly grooved, with striated, coarse hairy or scaly purplish to pale purple color. The flesh is thin purple to whitish.^[3]

Spores are 7.5-10.5 x 7-16 µm subglobose or broadly elliptical. Spore print white.

Similar species

This species is similar to L. amethystina but differs by occurring than hard wood forest and in Eastern North America, rather than conifers forest; having a smaller sporocarp; and being a lighter purple color.

References

1. Muller, 1984.
2. Michael Wood & Fred Stevens (2015). "California Fungi—Laccaria amethysteo-occidentalis". Retrieved 2016-01-21.
3. Michael Kuo (2015). "Laccaria amethysteo-occidentalis". Retrieved 2016-01-21.

• Mueller, Gregory M. (1984). "New North American species of Laccaria (Agaricales)". Mycotaxon 20 (1): 101–116. (Archived at: CYBERLIBER: an Electronic Library for Mycology.)

External links