Arrhenia spathulata

Arrhenia spathulata
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Hygrophoraceae
Genus: Arrhenia
Species:
A. spathulata
Binomial name
Arrhenia spathulata
(Fr.) Redhead (1984)
Synonyms
  • Cantharellus spathulatus Fr. (1828)
  • Arrhenia muscigena (Bull.) Kühner & Lamoure (1972)
  • Arrhenia muscigenum (Bull.) Honrubia & Folgado (1972)
  • Arrhenia retiruga var. spathulata (Fr.) Gminder (2001)
Arrhenia spathulata
Ridges on hymenium
Cap is infundibuliform
Hymenium is decurrent
Stipe is bare or lacks a stipe
Spore print is white
Ecology is saprotrophic
Edibility is inedible

Arrhenia spathulata is a mushroom-forming fungus in the family Hygrophoraceae. Found in Europe, it is widespread along the Atlantic coast.[1]

Description

Its cap is 5-20 mm and hygrophanous, becoming dark grey and translucently striped when wet, and paling to a grey-brown when dry. It is spatula or funnel shaped and its texture is smooth.[2] The hymenophore has branched grey veins, that with age anastomose. They are adnexed to the stipe. The stipe is 2-3 x .5-1.5 mm. The flesh smells like geranium leaves. [3]

The spore print is white. The spores measure 7-10 by 4-6.5 μm. and teardrop shaped. The basidia have 4 spores each and measure 28-34 x 7-10 μm. They have straight to curved sterigmata. Cheilocystidia are absent. Clamp connections are absent in all tissues. [1]

Ecology

Arrhenia spathulata grows on Tortula ruralis var. ruraliformis. It is common on coastal dunes in the Netherlands. It grows from October to January. [1]

References

  1. ^ a b c Bas C, Kuyper TW, Noordeloos ME (1995). Flora Agaricina Neerlandica – 3. CRC Press. p. 40. ISBN 978-90-5410-616-6.
  2. ^ "MycoDB : Fiche de Arrhenia spathulata". www.mycodb.fr. Retrieved 2024-02-21.
  3. ^ Laux, Hans E. (July 18, 2022). Der große Kosmos Pilzführer (in German). Franckh-Kosmos Verlags-GmbH & Company KG (published 2022-07-18). p. 164. ISBN 9783440505885.