Marasmius rotula
Marasmius rotula | |
---|---|
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Fungi |
Division: | Basidiomycota |
Class: | Agaricomycetes |
Order: | Agaricales |
Family: | Marasmiaceae |
Genus: | Marasmius |
Species: | M. rotula
|
Binomial name | |
Marasmius rotula | |
Synonyms[3] | |
Marasmius rotula saprotrophic | |
---|---|
Edibility is inedible |
Marasmius rotula is a common species of
The
Unlike other mushrooms known to release
Taxonomy
The species was first described by Italian mycologist
In his 1821 A Natural Arrangement of British Plants,
Several
Marasmius rotula is
Description
The
Gills are attached to a collar, never to the stem, although some specimens have the collar pressed close enough to it that this characteristic may be less obvious.[18] Widely spaced, they have the same whitish to pale yellow color as the flesh, and typically number between 16 and 22.[26] They are initially narrow, but thicken downward to about 1–3 mm at the exposed edge.[27] The stem is 1.2 to 8.0 cm (0.5 to 3.1 in) long and up to 0.15 cm (0.06 in) thick, with a smooth, sometimes shiny surface.[20] It is tough, hollow, and either straight or with some curving. The color is blackish-brown up to a lighter, almost translucent apex. The base of the stem may be connected to dark brown or black root-like rhizomorphs 0.1–0.3 mm thick.[27] Mature specimens display no veil.[20]
Note particularly the manner in which the hair-like stem is set into the tiny socket, the sparsity of the gill development, and the fine furrows and scallopings of the margin of the cap. A Swiss watchmaker could not excel such workmanship.
Louis C.C. Krieger[28]
Details of the fruit bodies' appearance, color in particular, are somewhat variable and dependent on growing conditions. For example, specimens growing on logs in oak and hickory forests in the spring tend to have more yellowish-white, depressed caps than those found in the same location in autumn, which are light yellow brown and more convex in shape.[27] The fruit body development of M. rotula is hemiangiocarpous, with an hymenium that is only partially enclosed by basidiocarp tissues. Robert Kühner showed that a cortina-like tissue covers the young gills before the expanding cap breaks away from the stem. In unfavorable weather conditions, the mushrooms may fail to develop normally and instead produce semi-gasteroid basidiocarps.[29]
Microscopic characteristics
Viewed in deposit, such as with a
Similar species
There are several less-common species of Marasmius with which M. rotula might be confused due to somewhat similar overall appearances, but differences in size, gill arrangement, and substrate are usually sufficient field characteristics to distinguish between them. For example, Marasmius capillaris has a pale tan cap with a white center, and grows on oak leaves without forming clusters.[24] Furthermore, its cap is evenly rounded, unlike the pleated and furrowed cap of M. rotula,[30] and its stem is somewhat thinner (usually less than 0.3 mm) and slightly darker in color.[31]
M. rotula is distinguished from
Other Marasmius species with a pinwheel arrangement of gills are readily distinguished from M. rotula by differences in color, including the orange M. siccus, the pink M. pulcherripes, and the rust M. fulvoferrugineus.[30] Mycena corticola is smaller than Marasmius rotula, has a pale pink-brown cap, and is usually found growing singly or in small groups on bark near the base of living trees.[18]
Ecology and distribution
Marasmius rotula is a
In 1975 American mycologist Martina S. Gilliam investigated the periodicity of spore release in M. rotula and concluded that spore discharge did not follow a regular circadian rhythm, as is typical of agaric and bolete mushrooms,[40] but rather was dependent on rain. A threshold of rainfall is required to elicit a spore discharge response and the duration of peak spore discharge correlates with the amount of rainfall, rather than its duration. Furthermore, Gilliam noted that spore prints were more readily obtained if the stem ends were placed in water, suggesting that water must enter through the fruit body for discharge to occur.[41]
Like those of many other species of Marasmius, the fruit bodies of M. rotula can desiccate and shrivel in dry periods, then revive when sufficient moisture is available again in the form of rain or high humidity. Gilliam's study demonstrated that revived fruit bodies were capable of discharging spores over a period of at least three weeks, whereas previous studies using similar methods with other Agaricomycetes showed spore discharge occurred over a shorter period of up to six days after revival. The potential for sustained spore production and discharge may be due to the growth of new basidioles (immature basidia) during periods of growth, which then complete maturation when the mushroom revives. This may also explain why the gills become thicker as the mushroom matures.[41]
The fungus is widespread and common in its preferred habitats in North America, Europe, and northern Asia.
Uses
Marasmius rotula is generally considered inedible,
A
See also
References
- ^ a b c Gray SF. (1821). A Natural Arrangement of British Plants. Vol. 1. London, UK: Baldwin, Cradock, and Joy. p. 622.
- ^ .
- ^ "Synonymy: Marasmius rotula (Scop.) Fr". Index Fungorum. CAB International. Retrieved 2012-06-14.
- ^ Scopoli JA. (1772). Flora Carniolica (in Latin). Vol. 2 (2nd ed.). Vienna, Austria: J.P. Krauss. p. 456.
- ^ Fries EM. (1821). Systema Mycologicum (in Latin). Vol. 1. Lundin, Sweden: ex officina Berlingiana. p. 136.
- ^ Fries EM. (1838). Epicrisis Systematis Mycologici (in Latin). Uppsala, Sweden: Typographia Academica. p. 385.
- ^ Patouillard N. (1887). Les Hyménomycètes d'Europe (in French). Paris, France: Paul Klincksieck. p. 105.
- ISBN 978-0-85199-826-8.
- ^ Withering W. (1796). An Arrangement of British Plants. Vol. 4 (3rd ed.). Birmingham, UK: M. Swinney. p. 148.
- JSTOR 3755094. Archived from the originalon 2015-09-23. Retrieved 2012-07-04.
- JSTOR 1217581.
- JSTOR 1216603.
- ^ Gilliam 1976, p. 112
- ^ .
- ^ Saccardo PA. (1887). Sylloge Fungorum (in Latin). Vol. 5. Padova, Italy: Sumptibus Auctoris. p. 541.
- ^ Schröter J. (1885). Kryptogamen-Flora von Schlesien (in German). Vol. 3–1(1). Lehre, Germany: Cramer. p. 558.
- ^ "Marasmius rotula var. phyllophila J. Schröt. 1889". MycoBank. International Mycological Association. Retrieved 2012-06-18.
- ^ ISBN 978-0-8131-9039-6.
- ^ "Recommended English Names for Fungi in the UK" (PDF). British Mycological Society. Archived from the original (PDF) on 2011-07-16.
- ^ ISBN 978-0-7627-3109-1.
- ISBN 978-0-89815-169-5.
- ISBN 978-0-86840-742-5.
- ^ ISBN 978-0-520-03656-7.
- ^ ISBN 978-0-8156-0388-7.
- ^ ISBN 978-0-395-91090-0.
- ^ ISBN 978-0-7112-2378-3.
- ^ a b c d e Gilliam 1976, pp. 122–7
- ^ a b Krieger LCC. (1920). "Common mushrooms of the United States". National Geographic. 37 (5): 413.
- ^ Gilliam 1976, p. 3
- ^ a b c Kuo M. (November 2004). "Marasmius rotula". MushroomExpert.com. Retrieved 2012-05-15.
- ^ Gilliam 1976, p. 121
- ^ ISBN 978-0-226-72117-0.
- ISBN 978-1-58729-627-7.
- ^ Singer R. (1989). "New taxa and new combinations of Agaricales (diagnoses fungorum novorum agaricalium IV)". Fieldiana Botany (in Latin and English) (21): 51.
- doi:10.1016/S0007-1536(51)80030-5. Archived from the originalon 2015-09-23. Retrieved 2012-06-25.
- ^ Kauffman CH. (1918). The Agaricaceae of Michigan. Vol. 1. Lansing, Michigan: Wynkoop Hallenbeck Crawford Co., State Printers. p. 78.
- ^ .
- .
- JSTOR 4157507.
- S2CID 43203842.
- ^ ISSN 0026-203X.
- JSTOR 20791530.
- ^ Idu M, Osemwegie OO, Onyibe HI (2008). "Checklist of flora in Edo State, Nigeria". Plant Archives. 8 (2): 539–49.
- JSTOR 3666575.
- S2CID 11344743.
- ^ a b Das N. (2005). "Determination of lead, arsenic, cadmium, iron, copper and nickel in wild mushroom samples from South West Bengal". Mushroom Research. 14 (2): 80–3.
- ^ S2CID 6516292.
- PMID 21988939.
Cited literature
- Gilliam, M. S. (1976). "The genus Marasmius in the northeastern United States and adjacent Canada". Mycotaxon. 4 (1): 1–144. ISSN 0093-4666. Archived from the originalon 2015-09-23. Retrieved 2012-06-25.
External links
- Media related to Marasmius rotula at Wikimedia Commons
- Marasmius rotula in Index Fungorum