''Agaricus subrutilescens'', also known as the wine-colored agaricus, is a
mushroom
A mushroom or toadstool is the fleshy, spore-bearing Sporocarp (fungi), fruiting body of a fungus, typically produced above ground on soil or another food source. ''Toadstool'' generally refers to a poisonous mushroom.
The standard for the n ...
of the genus ''
Agaricus
''Agaricus'' is a genus of mushroom-forming fungi containing both edible and poisonous species, with over 400 members worldwide and possibly again as many disputed or newly discovered species. The genus includes the common ("button") mushroom ...
''.
Taxonomy
The species was first described scientifically in 1925 as ''Psalliota subrutilescens''.
[ It was transferred to ''Agaricus'' in 1938.][
]
Description
''Agaricus subrutilescens'' has a cap
A cap is a flat headgear, usually with a visor. Caps have crowns that fit very close to the head. They made their first appearance as early as 3200 BC. The origin of the word "cap" comes from the Old French word "chapeau" which means "head co ...
that is across, dry, and has many wine to brown colored fibrils, especially near the center. The gills
A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...
are close and white at first, turning pinkish and then dark brown in age. The stalk has a skirt-like ring
(The) Ring(s) may refer to:
* Ring (jewellery), a round band, usually made of metal, worn as ornamental jewelry
* To make a sound with a bell, and the sound made by a bell
Arts, entertainment, and media Film and TV
* ''The Ring'' (franchise), a ...
and is long, thick, white, and covered with soft woolly scales below the ring. The flesh is white and does not stain, and the odor and taste are mild.
The purplish fibrous cap and shaggy white stem differentiate this mushroom from others which resemble it. Similar species include '' Agaricus hondensis'' and ''A. moelleri''.
Habitat and distribution
The mushroom fruits in undisturbed mixed woods in Western North America and Japan. It grows by itself or scattered in small clusters, often under redwood
Sequoioideae, commonly referred to as redwoods, is a subfamily of Pinophyta, coniferous trees within the family (biology), family Cupressaceae, that range in the Northern Hemisphere, northern hemisphere. It includes the List of superlative tree ...
, pine
A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae.
''World Flora Online'' accepts 134 species-rank taxa (119 species and 15 nothospecies) of pines as cu ...
, or alder
Alders are trees of the genus ''Alnus'' in the birch family Betulaceae. The genus includes about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species ex ...
. Recently this mushroom has been identified in New Zealand and Australia.
Edibility
This mushroom is variously described as edible, inedible, or responsible for causing gastric upset.
See also
* List of ''Agaricus'' species
References
{{Taxonbar, from=Q4691345
subrutilescens
Fungi described in 1925
Fungi of Asia
Fungi of North America
Fungus species