''Floccularia albolanaripes'' is a species of

fungus A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...

in the family

Agaricaceae The Agaricaceae are a family of basidiomycete fungi and include the genus ''Agaricus'', as well as basidiomycetes previously classified in the families Tulostomataceae, Lepiotaceae, and Lycoperdaceae. Taxonomy The family Agaricaceae was publishe ...

. Mushrooms are characterized by their yellow caps with a brownish center and scales over the margin, and the conspicuous remains of a

partial veil In mycology, a partial veil (also called an inner veil, to differentiate it from the "outer", or universal veil) is a temporary structure of tissue found on the fruiting bodies of some Basidiomycota, basidiomycete fungus, fungi, typically agarics. ...

that is left on the stipe. The species grows in the

Pacific Northwest The Pacific Northwest (PNW; ) is a geographic region in Western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though no official boundary exists, the most common ...

and the

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in great-circle distance, straight-line distance from the northernmost part of Western Can ...

of North America, and in India. It is

edible An edible item is any item that is safe for humans to eat. "Edible" is differentiated from " eatable" because it does not indicate how an item tastes, only whether it is fit to be eaten. Nonpoisonous items found in nature – such as some mushroo ...

Taxonomy

The species was first described as ''Armillaria albolanaripes'' by American mycologist George F. Atkinson in 1908. The

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * ...

specimens were collected from

Corvallis, Oregon Corvallis ( ) is a city in and the county seat of Benton County, Oregon, Benton County in central western Oregon, United States. It is the principal city of the Corvallis, Oregon Metropolitan Statistical Area, which encompasses all of Benton Co ...

, on November 6, 1906. It was known as an ''

Armillaria ''Armillaria'' is a genus of fungi that includes the '' A. mellea'' species ('honey fungus') that live on trees and woody shrubs. It includes about 10 species formerly categorized summarily as ''A. mellea''. ''Armillaria'' sp. are long-live ...

'' for several decades until members of that genus with

amyloid Amyloids are aggregates of proteins characterised by a fibrillar morphology of typically 7–13 nm in diameter, a β-sheet secondary structure (known as cross-β) and ability to be stained by particular dyes, such as Congo red. In the human ...

spores and lacking black

rhizomorph Mycelial cords are linear aggregations of parallel-oriented hyphae. The mature cords are composed of wide, empty vessel hyphae surrounded by narrower sheathing hyphae. Cords may look similar to plant roots, and also frequently have similar functi ...

s were transferred to '' Floccularia'' in 1987.

Description

The

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 ...

is convex to flattened (sometimes with a shallow umbo), measuring in diameter. Its color is bright-yellow to orange-yellow and then later brownish, and it has flattened brownish scales over the center. The whitish cap margin is rolled inward. The well-separated

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 ...

have tooth-like edges, and an

adnate Adnate may refer to: * Adnation, in botany, the fusion of two or more whorls of a flower * Adnate, in mycology, a classification of lamellae (gills) * Conjoined twins Conjoined twins, popularly referred to as Siamese twins, are twins joined '' ...

attachment to the stipe, sometimes with a notch. They are initially white before turning

cream Cream is a dairy product composed of the higher-fat layer skimmed from the top of milk before homogenization. In un-homogenized milk, the fat, which is less dense, eventually rises to the top. In the industrial production of cream, this proces ...

in maturity. The stipe measures long by wide, and is roughly the same width throughout. Shiny with a light yellow-brown base color, it has one to several cottony zones of partial veil remnants. The

flesh Flesh is any aggregation of soft tissues of an organism. Various multicellular organisms have soft tissues that may be called "flesh". In mammals, including humans, ''flesh'' encompasses muscles, fats and other loose connective tissues, ...

is firm, and white to yellow under the

cap cuticle The pileipellis is the uppermost layer of hyphae in the pileus of a fungal fruit body. It covers the trama, the fleshy tissue of the fruit body. The pileipellis is more or less synonymous with the cuticle, but the cuticle generally describes th ...

. It has no distinguishable odor and a mild taste. The

spore print 300px, Making a spore print of the mushroom ''Volvariella volvacea'' shown in composite: (photo lower half) mushroom cap laid on white and dark paper; (photo upper half) cap removed after 24 hours showing warm orange ("tussock") color spore print. ...

is white. The

spores In biology, a spore is a unit of sexual (in fungi) or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plant ...

are

ellipsoid An ellipsoid is a surface that can be obtained from a sphere by deforming it by means of directional Scaling (geometry), scalings, or more generally, of an affine transformation. An ellipsoid is a quadric surface; that is, a Surface (mathemat ...

, smooth, and measure 6–8 by 4–4.5

μm The micrometre (Commonwealth English as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American English), also commonly known by the non-SI term micron, is a unit of length in the International System ...

Similar species

The base form of species ''

Floccularia luteovirens ''Floccularia'' is a genus of fungi in the order Agaricales. There are four recognized species in the genus, which have a widespread distribution, especially in northern temperate regions. Two former species are now classified as a '' Cercopemyce ...

'' is similar in appearance, but has a brighter yellow cap with raised scales on the surface and yellowish gills. ''F. luteovirens'' forma ''straminea'' (which has sometimes been defined as a distinct species, ''F. straminea'') is another lookalike with similar coloration and habitat preferences, but its cap features shaggy scales arranged in concentric zones, and it has light yellow gills.

Habitat and distribution

The fruit bodies grow singly to scattered under

conifer Conifers () are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a sin ...

s. In North America, it is found in the

and the

, where it occurs in the spring and summer. A snowbank mushroom, it is often found around the edge of melting snowbanks, or shortly after the snow has melted. In

Kashmir, India Kashmir ( or ) is the northernmost geographical region of the Indian subcontinent. Until the mid-19th century, the term ''Kashmir'' denoted only the Kashmir Valley between the Great Himalayas and the Pir Panjal Range. The term has since a ...

, it grows in a suspected

mycorrhiza A mycorrhiza (; , mycorrhiza, or mycorrhizas) is a symbiotic association between a fungus and a plant. The term mycorrhiza refers to the role of the fungus in the plant's rhizosphere, the plant root system and its surroundings. Mycorrhizae play ...

l association with ''

Pinus wallichiana ''Pinus wallichiana'' is a coniferous evergreen tree native to the Himalaya, Karakoram and Hindu Kush mountains, from eastern Afghanistan east across northern Pakistan and north west India to Yunnan in southwest China. It grows in mountain v ...

''.

Uses

''F. albolanaripes'' mushrooms are

but of little flavor.

References

External links

* {{Taxonbar, from=Q10496863 Agaricaceae Edible fungi Fungi described in 1908 Fungi of North America Snowbank fungi Fungus species