Hypholoma tuberosum

Hypholoma tuberosum
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Strophariaceae
Genus: Hypholoma
Species:
H. tuberosum
Binomial name
Hypholoma tuberosum
Redhead & Kroeger
Hypholoma tuberosum
Mycological characteristics
Gills on hymenium
Cap is convex or campanulate
Hymenium is adnate
Stipe is bare
Spore print is purple-brown
Ecology is saprotrophic
Edibility is unknown

Hypholoma tuberosum is a species of mushroom in the family Strophariaceae. It is the only mushroom in the genus Hypholoma to grow from a sclerotium.[1]

Description

The cap of Hypholoma tuberosum is orangish brown, and is convex or campanulate. It is 2–6 centimeters in diameter.[2] The stipe is about 2–4 centimeters long aboveground, and about 48 millimeters wide.[3] The gills are adnate and start out grayish, eventually becoming purplish black.[2] The spore print is purplish brown,[3] and the mushroom grows from an underground sclerotium.[2]

Similar species

Agrocybe arvalis is similar to Hypholoma tuberosum, as it also grows on woodchips and has sclerotia, but its sclerotia are more round and the mushroom is lighter in color.[1][2]

Habitat and ecology

Hypholoma tuberosum is saprophytic and grows on woodchips.[3] It also grows in nutrient-rich soils, and is found in cities.[2] It is found in China, parts of Europe,[1] Japan, Australia, the United States,[3] and British Colombia. In British Colombia, it is invasive, having been brought there on potted plants from Australia.[4] It is thought to have originated in Australia.[1]

References

  1. ^ a b c d Trudell, Steve (October 25, 2022). Mushrooms of the Pacific Northwest (Revised ed.). Portland, OR: Timber Press. p. 244. ISBN 9781643260860.
  2. ^ a b c d e Siegel, Noah; Schwarz, Christian (September 1, 2024). Mushrooms of Cascadia: A Comprehensive Guide to Fungi of the Pacific Northwest. Humboldt County, CA: Backcountry Press. p. 113. ISBN 9781941624197.
  3. ^ a b c d "Hypholoma tuberosum (MushroomExpert.Com)". www.mushroomexpert.com. Retrieved 2025-09-30.
  4. ^ Communications, Garden (2019-02-14). "B.C.'s invasive mushrooms". UBC Botanical Garden. Retrieved 2025-09-30.