Laccaria amethysteo-occidentalis

Laccaria amethysteo-occidentalis is a mushroom found under conifers, usually pine, growing alone, scattered or gregariously in western North America.[2]

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 amethystea-occidentalis[1]
Laccaria amethysteo-occidentalis
float
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

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.[3]

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.[4] The mushroom is edible.[1]

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. Phillips, Roger (2010). Mushrooms and Other Fungi of North America. Buffalo, NY: Firefly Books. p. 6. ISBN 978-1-55407-651-2.
  2. Muller, 1984.
  3. Michael Wood & Fred Stevens (2015). "California Fungi—Laccaria amethysteo-occidentalis". Retrieved 2016-01-21.
  4. Michael Kuo (2015). "Laccaria amethysteo-occidentalis". Retrieved 2016-01-21.


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