Lactarius pyrogalus

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Lactarius pyrogalus
Lactarius pyrogalus.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Russulales
Family: Russulaceae
Genus: Lactarius
Species:
L. pyrogalus
Binomial name
Lactarius pyrogalus
(Bull. ex Fr.) (1838)
Synonyms [1]

Agaricus pyrogalusBull. (1792)
Agaricus lactifluus var. pyrogalus(Bull.) Pers.
Galorrheus pyrogalus(Bull.) P.Kumm. (1871)
Lactifluus pyrogalus(Bull.) Kuntze (1891)

Contents

Lactarius pyrogalus
Information icon.svg
Gills icon.png Gills on hymenium
Flat cap icon.svg Cap is flat
Decurrent gills icon2.svg Hymenium is decurrent
Bare stipe icon.svg Stipe is bare
Transparent spore print icon.svg
Spore print is ochre
Mycorrhizal fungus.svgEcology is mycorrhizal
Mycomorphbox Inedible.pngEdibility is inedible

Lactarius pyrogalus, commonly known as the fire-milk lactarius, is a species of inedible mushroom in genus Lactarius . It is greyish and differentiated from other grey Lactarius by its widely spaced, yellow gills. It is found on the forest floor in mixed woodland, especially at the base of hazel trees.

Taxonomy

Lactarius pyrogalus was first described by French mycologist Pierre Bulliard as Agaricus pyrogalus in 1792, before being given its current binomial name by Swedish mycologist Elias Magnus Fries in 1838.

Description

Lactarius pyrogalus has a cap 5–10 cm (2–4 in) across which is grey fawn, sometimes with a yellowish tinge, [2] with pink and purple tinges not unknown. [3] It is flattened convex to flat, later becoming funnel shaped. [2] The cap is sometimes faintly concentrically banded, it is thin fleshed and becomes sticky when moist, [2] but is not shiny. [4] The stem is between 4 and 6 cm, and between 7 and 15 mm thick, generally cylindrical but sometimes slightly swollen at the base. [2] The stem is whitish or concolorous with the cap, with whitish flesh. [2] It has slightly decurrent gills, which are yellow to flesh coloured, though later become a cinnamon-ochre colour. [2] The well-spaced, yellow gills differentiate it from other greyish Lactarius species. [4]

An underside view of L. pyrogalus showing the widely spaced gills exuding drops of white latex. Lactarius-pyrogalus-gills.jpg
An underside view of L. pyrogalus showing the widely spaced gills exuding drops of white latex.

Spores

Lactarius pyrogalus produces a light ochre spore print; the spores are broadly elliptic, with warts generally joined by a moderately thick ridges in a well-developed network. [2] The spores are 78 by 5.57  μm in size. [2] [4] The spores are amyloid, meaning they stain dark blue in Melzer's reagent, and feature an incomplete net. [4]

Distribution

Lactarius pyrogalus is fairly common [4] and is generally found at the base of hazel trees alone or in scattered groups. [5] It is particularly common in hazel woodland managed for coppice. [6] It can also be found elsewhere on the ground in mixed woodland. [4] It is found in the autumn months of August, September and October. [2] [4]

Edibility

Lactarius pyrogalus has a very hot, acrid taste and is acidic. [2] It is due to this taste that it received both its English name, fire-milk lactarius, and its scientific name, with "pyrogalus" translating as "fire milk". [3] Despite not being poisonous, [4] it is not regarded as edible and should be avoided. [2] [4] This is unlike its relative, the saffron milk-cap ( L. deliciosus ), which is regarded as a choice mushroom. [7]

See also

Related Research Articles

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Lactarius torminosus, commonly known as the woolly milkcap or the bearded milkcap, is a large species of agaric fungus. A common and widely distributed species, it is found in North Africa, northern Asia, Europe, and North America. It was first described scientifically by Jacob Christian Schäffer in 1774 as an Agaricus, and later transferred to the genus Lactarius in 1821 by Samuel Frederick Gray. A variety, L. torminosus var. nordmanensis, is known from the United States, Canada, and Switzerland. L. torminosus officially became the type species of Lactarius in 2011 after molecular studies prompted the taxonomic reshuffling of species between several Russulaceae genera.

<i>Gymnopilus aeruginosus</i> Species of fungus

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<i>Lactarius uvidus</i> Species of fungus

Lactarius uvidus, commonly known as the purple staining milk cap, is a European and North American "milk-cap" mushroom, of which the milk turns violet when the flesh is damaged. The fungi generally identified as L. uvidus are part of a complex of closely related species and varieties which are difficult to delimit definitively.

<i>Lactarius helvus</i> Species of fungus

Lactarius helvus, commonly known as fenugreek milkcap, is a member of the large milkcap genus Lactarius in the order Russulales. Fruiting bodies can be found in Sphagnum moss in coniferous and deciduous woodland in Europe, and possibly North America, although considerable debate continues about the North American variety, formerly referred to as Lactarius aquifluus. Mushrooms are pale brown-grey or beige in colour and funnel-shaped, with colourless, watery milk. Its distinctive smell has been likened to fenugreek, celery, liquorice, or Maggi instant soup. Mildly toxic when raw, it has been implicated in the poisoning of 418 people near Leipzig in October 1949. However, it is used in small quantities as a spice when dried. Sotolon, the agent that gives the fungus its odour, also occurs in fenugreek, maple syrup and lovage.

<i>Russula sanguinaria</i> Species of fungus

Russula sanguinaria, commonly known as the bloody brittlegill or rosey russula, is a strikingly coloured mushroom of the genus Russula, which has the common name of brittlegills. It is bright blood-red, inedible, and grows in association with coniferous trees. It was previously widely known as Russula sanguinea.

<i>Lactarius subdulcis</i> Species of fungus

Lactarius subdulcis, commonly known as the mild milkcap or beech milk cap, is an edible mushroom in the genus Lactarius. It is brown in colour, with a large number of gills and a particularly thin layer of flesh in the cap. Mycorrhizal, the mushroom is found from late summer to late autumn at the base of beech trees in small groups or individually, where it is one of the two most common species of fungi. Alternatively, it can be found in large groups in fields, sometimes with more than a hundred individual mushrooms. It is found in Europe, and, despite previous research to the contrary, is absent in North America. Although considered edible, it is not particularly useful as food due to its ivy-like taste and the fact that more choice mushrooms will be easily found at the same time. L. subdulcis is known for its abundant, sweet-tasting milk that, unlike the latex of some of its relatives, does not stain fabric yellow.

<i>Lactifluus piperatus</i> Species of fungus

Lactifluus piperatus, commonly known as the blancaccio, is a semi-edible basidiomycete fungus of the genus Lactifluus. Despite being edible, it is not recommended by some because of its poor taste, though can be used as seasoning when dried. The fruiting body is a creamy-white mushroom which is funnel-shaped when mature, with exceptionally crowded gills. It bleeds a whitish peppery-tasting milk when cut. Widely distributed across Europe and eastern North America, Lactifluus piperatus has been accidentally introduced to Australia. Mycorrhizal, it forms a symbiotic relationship with various species of deciduous tree, including beech, and hazel, and fruiting bodies are found on the forest floor in deciduous woodland.

<i>Russula delica</i> Species of fungus

Russula delica is a mushroom that goes by the common name of milk-white brittlegill, and is a member of the genus Russula, all of which are collectively known as brittlegills. It is mostly white, with ochraceous or brownish cap markings, and a short robust stem. It is edible, but poor in taste, and grows in coniferous, broadleaved, or mixed woods. It can be confused with other white Russula species and certain white Lactarius species.

<i>Lactarius glyciosmus</i> Species of fungus

Lactarius glyciosmus, commonly known as the coconut scented milk cap, is a semi-edible mushroom in the genus Lactarius. Mycorrhizal, it can be found growing in soil at the base of birch trees in Europe. It is typically coloured a greyish lilac, with the sometimes hollow stem a little lighter coloured than the cap. It has crowded, decurrent gills, and smells strongly of coconuts.

<i>Lactarius tabidus</i> Species of fungus

Lactarius tabidus, commonly known as the birch milkcap, is an inedible mushroom of the genus Lactarius. It can be found in North America and Europe, and grows at the base of pine in Autumn. Its white milk stains fabric a sulphur yellow, from which its specific epithet derives.

<i>Lactarius vietus</i> Species of fungus

Lactarius vietus is a species of fungus in the family Russulaceae, first described by Elias Magnus Fries. It produces moderately sized and brittle mushrooms, which grow on the forest floor or on rotting wood. The flattened-convex cap can vary in shape, sometimes forming the shape of a wide funnel. It is typically grey, but the colour varies. The species has crowded, light-coloured gills, which produce white milk. The spore print is typically whitish, but also varies considerably. The mushrooms typically have a strong, acrid taste and have been described as inedible, but other authors have described them as consumable after boiling. L. vietus feeds by forming an ectomycorrhizal relationship with surrounding trees, and it favours birch. It grows in autumn months and is fairly common in Europe, North America and eastern Asia.

<i>Lactarius pallidus</i> Species of fungus

Lactarius pallidus, the pale milkcap, is an edible mushroom of the genus Lactarius. It is pale in colour, and found on the floor in beech or birch woodland. It's smooth cap features a particularly thick layer of flesh and often has an incurved margin. Though generally considered edible, it is not recommended to be eaten raw. It is common in Europe, and less common in North America and Australasia.

<i>Lactarius quietus</i> Species of fungus

Lactarius quietus is a mushroom of the genus Lactarius. It is easily identified by its oily scent and the concentric bands on its cap. It is brown, and is probably named after its matte, "quiet" surface and colouration. It is found exclusively under oak trees in Europe, where it grows solitarily or in scattered groups in autumn months. In North America, the variety L. quietus var. incanus is fairly common in the same habitat. The mushroom's edibility is disputed.

<i>Lactarius chrysorrheus</i> Species of fungus

Lactarius chrysorrheus is a member of the genus Lactarius, whose many members are commonly known as milkcaps. It has recently been given the English (common) name of the yellowdrop milkcap. It is pale salmon in color, poisonous, and grows in symbiosis with oak trees.

<i>Conocybe rickenii</i> Species of fungus

Conocybe rickenii is a mushroom from the genus Conocybe. Its edibility is disputed, and it has the appearance of a typical little brown mushroom with a small, conical cap, and long, thin stem. In colour, it is generally a cream-brown, lighter on the stem, and it has a thin layer of flesh with no distinct smell or taste. It is a coprophilous fungus, feeding off dung and it is most common on very rich soil or growing directly from dung. It can be found in Europe, Australia and Pacific islands.

<i>Lactarius alnicola</i> Species of fungus

Lactarius alnicola, commonly known as the golden milkcap, is a species of fungus in the family Russulaceae. The fruit bodies produced by the fungus are characterized by a sticky, vanilla-colored cap up to 20 cm (7.9 in) wide with a mixture of yellow tones arranged in faint concentric bands. The stem is up to 5 cm (2.0 in) long and has yellow-brown spots. When it is cut or injured, the mushroom oozes a white latex, which has an intensely peppery taste. The acrid taste of the fruit bodies renders them unpalatable. The fungus is found in the western United States and Mexico, where it grows in mycorrhizal associations with various coniferous trees species, such as spruce, pine and fir, and deciduous species such as oak and alder. It has also been collected in India. Two varieties have been named: var. pitkinensis, known from Colorado, and var. pungens, from Michigan.

<i>Lactarius pubescens</i> Species of fungus

Lactarius pubescens, commonly known as the downy milk cap, is a species of fungus in the family Russulaceae. It is a medium to large agaric with a creamy-buff, hairy cap, whitish gills and short stout stem. The fungus has a cosmopolitan distribution, and grows solitarily or in scattered groups on sandy soil under or near birch.

<i>Lactarius affinis</i> Species of mushroom

Lactarius affinis, commonly known as the kindred milk cap, is a species of milk-cap mushroom in the family Russulaceae. It is found northeastern North America, where it fruits in the summer and fall, and is common in the Great Lakes region. Its fruit bodies have medium to large, slimy dull yellow or brownish caps. Although not considered poisonous, it is unpalatable because of its highly acrid taste.

<span class="mw-page-title-main">Lactifluus deceptivus</span> Species of fungus

Lactifluus deceptivus, commonly known as the deceiving milkcap, is a common species of fungus in the family Russulaceae. It is found throughout eastern North America on the ground in coniferous forests near hemlock or deciduous forests near oak, and in oak-dominated forests of Costa Rica. It produces large mushrooms with funnel-shaped caps reaching up to 25 cm (9.8 in) in diameter, on top of hard white stems that may reach 4–10 cm (1.6–3.9 in) long and up to 3 cm (1.2 in) thick. The gills are closely spaced together and yellowish-cream in color. When young, the cap is white in all parts, but the depressed center becomes dull brownish in age and breaks up into scales. The edge of the cap has a roll of cottony tissue that collapses as the cap expands. The surface of the stem—especially near the base—has a velvety texture. The mushroom "bleeds" a milky white acrid latex when it is cut or injured. Similar milk-cap species with which L. deceptivus might be confused include Lactifluus piperatus, L. pseudodeceptivus, L. caeruleitinctus, L. subvellereus, Lactarius arcuatus and Lactarius parvulus.

<i>Lactarius pallescens</i> Species of fungus

Lactarius pallescens is a Western North American "milk-cap" mushroom, of which the milk turns violet when the flesh is damaged. The fungi generally identified as L. pallescens are part of a complex of closely related species and varieties which have a peppery taste and are difficult to delimit definitively.

References

  1. "Lactarius pyrogalus (Bull.) Fr. 1838". MycoBank. International Mycological Association. Retrieved 2011-06-06.
  2. 1 2 3 4 5 6 7 8 9 10 11 Phillips, Roger (1981). Mushrooms and Other Fungi of Great Britain and Europe. London: Pan Books. p. 85. ISBN   0-330-26441-9.
  3. 1 2 Roody, William C. (2003). Mushrooms of West Virginia and the Central Appalachians. Kentucky: University Press of Kentucky. p. 100. ISBN   978-0-8131-9039-6 . Retrieved 2008-07-31.
  4. 1 2 3 4 5 6 7 8 9 Pegler, David N. (1983). Mushrooms and Toadstools. London: Mitchell Beazley Publishing. p. 78. ISBN   0-85533-500-9.
  5. Jordan, Michael (2004). The Encyclopedia of Fungi of Britain and Europe. London: Frances Lincoln. p. 306. ISBN   978-0-7112-2378-3 . Retrieved 2008-07-31.[ permanent dead link ]
  6. Sterry, Paul (1997). Complete British Wildlife. HarperCollins. p. 352. ISBN   978-0-583-33638-3.
  7. Phillips, 80.