Amanita battarrae: The Ultimate Mushroom Guide
About The Amanita battarrae Mushroom
Amanita battarrae is a species of Amanita in Italy in the fall. This rare mushroom is distinguished from other ringless Amanita species (often referred to as grisettes) by the zoned coloring of its marginally grooved cap.
Other names: Grey-Zoned Ringless.
Amanita battarrae Identification
5 to 12cm diameter; various shades of grey-brown with a center that becomes gradually darker as the fruitbody matures; occasionally with velar fragments when young. The cap is Initially egg-shaped and then convex, eventually flattening but retaining a shallow umbo; strongly lined at the margin, usually with a narrow dark band where the striations commence.
The gills of Amanita battarrae are creamy white, crowded, free, or occasionally weakly adnexed. As with other grisettes, there are often a few short gills, of variable length and irregularly distributed.
Stems of this rare grisette are usually 7 to 15cm long and 0.8 to 1.8cm in diameter, tapering (narrower at the top); white and covered in fine woolly grey-brown scales; clavate but not bulbous at the base.
As with the other grisettes there is no ring on the stem, but at the base of the stipe, there is a white sac-like persistent volva with brown spots, which is sometimes buried below ground level or in leaf litter. The stem flesh is whitish.
Globose, smooth, 11-13µm; inamyloid.
Habitat & Ecological Role
Mycorhizal with hardwood trees, particularly oaks but also Ash and Hazel; occasionally also in coniferous woodland.
Amanita battarrae Look-Alikes
Has a grey-brown cap without significant zones; its stem is smooth and featureless.
Has a tawny-orange cap and white gills; its stem is smooth and featureless.
Amanita battarrae Taxonomy & Etymology
Described in 1902 by the French mycologist Jean Louis Émile Boudier, who named it Amanitopsis battarrae, this rare mushroom was given its currently accepted scientific name in 1985 by the famous French mycologist Marcel Bon (1925 - 2014). In the interrim this mycorrhizal woodland mushroom was considered by many mycologists to be a variety of either Amanita vaginata or Amanita inaurata (Amanita ceciliae).
Synonyms of Amanita battarrae include Amanitopsis battarrae Boud., and Amanita umbrinolutea (Secr. ex Gillet) Bataille.
The specific epithet battarrae honours Italian priest and naturalist Giovanni Antonio Battarra (1714 - 1789). Some people refer to this species as the Grey-zoned Ringless Amanita. The 2019 edition of British Mycological Society's list of English Names of Fungi uses the common name Banded Amanita.
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