Volvariella surrecta

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Volvariella surrecta
Volvariella surrecta 178609.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Pluteaceae
Genus: Volvariella
Species:
V. surrecta
Binomial name
Volvariella surrecta
(Knapp) Singer (1951)
Synonyms [1] [2]
  • Agaricus surrectusKnapp (1829)
  • Agaricus loveianus Berk. (1836)
  • Volvariopsis loweiana(Berk.) Murrill (1917)
  • Volvaria hypopithys subsp. loveiana(Berk.) Konrad & Maubl. (1924)
  • Volvaria surrecta(Knapp) Ramsb. (1942)
Volvariella surrecta
Information icon.svg
Gills icon.png Gills on hymenium
Convex cap icon.svgFlat cap icon.svg Cap is convex or flat
Free gills icon2.svg Hymenium is free
Volva stipe icon.svg Stipe has a volva
Transparent spore print icon.svg
 Spore print is pinkish-brown
Parasitic fungus.svgEcology is parasitic
Mycomorphbox Inedible.pngEdibility is inedible

Volvariella surrecta, commonly known as the piggyback rosegill, is an agaric fungus in the family Pluteaceae. Although rare, the species is widely distributed, having been reported from Asia, North America, Northern Africa, Europe, and New Zealand. The fungus grows as a parasite on the fruit bodies of other gilled mushrooms, usually Clitocybe nebularis . V. surrecta mushrooms have white or greyish silky-hairy caps up to 8 cm (3.1 in) in diameter, and white gills that turns pink in maturity. The stipe, also white, is up to 9 cm (3.5 in) long, and has a sack-like volva at its base.

Contents

Taxonomy

Knapp's 1829 drawing of Agaricus surrectus Knapp 1829 Agaricus surrectus.jpg
Knapp's 1829 drawing of Agaricus surrectus

The species was first mentioned in scientific literature as Agaricus surrectus by English botanist John Leonard Knapp in his 1829 Journal of a Naturalist. Knapp described the species and illustrated it in a woodcut. He wrote:

We have even an agaric, with a bulbous root and downy pileus, that will spring from the smooth summit of another (agaricus caseus), which has a uniform footstalk, though not of common occurrence. Thus a plant, that itself arises from decay, is found to constitute a soil for another; and the termination of this chain of efficiency is hidden from us. [3]

Seven years later, Miles Berkeley described the fungus as Agaricus loveianus, not aware of Knapp's previous publication, and wrote that it was "a most elegant and curious species which ... appears not to have been hitherto noticed." [4] Berkeley's name was frequently used in literature to refer to the fungus for over a century rather than Knapp. [5] In his 1917 North American Flora, William Alphonso Murrill proposed a new name combination for the species based on Berkeley's name, Volvariopsis loweiana. [6] In 1942, John Ramsbottom discovered Knapp's image and description of the fungus, and realizing it referred to the same species as Berkeley's Agaricus loveianus, made the new combination Volvaria surrecta. [7] Rolf Singer transferred it to the genus Volvariella in 1951, giving it the name by which it is known presently. [8]

Molecular analysis of DNA sequences suggests that V. surrecta belongs to the Volvariella pusilla group—a grouping of related Volvariella species that produce small, white fruit bodies. In this analysis, V. surrecta formed a subclade with V. hypopithys . [9] Almost 90 years earlier, Paul Konrad and André Maublanc recognized the relatedness of these species, and proposed that V. surrecta should be considered a subspecies of V. hypopithys. [2] [10]

The specific epithet surrecta is Latin for "to arise". Berkeley's epithet loveianus honors British naturalist and Reverend Richard Thomas Lowe. [5] The mushroom is commonly known as the piggyback rosegill. [11]

Description

The cap has a silky surface, with a yellowish to brownish center. Volvariella surrecta 178610 crop.jpg
The cap has a silky surface, with a yellowish to brownish center.

The fruit bodies of V. surrecta have caps that are initially ovoid (egg-shaped. Later they become bell-shaped or convex before flattening; reaching diameters of 2.5–8 cm (1.0–3.1 in). The cap sometimes has a shallow umbo, although the presence of this character is not consistent. The cap surface is dry and covered with long, silky hairs; the color is white to light gray, with a yellowish or brownish center. The gills are free from attachment to the stipe and are packed close together. They are initially white, later becoming pink. [12] There are many lamellulae (short gills that do not extend fully from cap margin to the stipe) interspersed between the gills. [13] The stipe is 4–9 cm (1.6–3.5 in) long by 4–12 mm (0.16–0.47 in) thick, and roughly equal in width throughout the length or somewhat thicker at the base. Its color is white to light gray, and the stipe surface is appressed-fibrillose, with a pruinose coating near the apex. The white volva measures 1.3–2.5 cm (0.5–1.0 in) high and 0.6–1.3 cm (0.2–0.5 in) broad, and has a lobed margin. [12] The mushroom is not edible. [11]

The color of the spore print is brownish-pink. [11] The spores are egg-shaped to oval, measuring 5.4–7.6 by 3.4–4.9  μm. The basidia (spore-bearing cells) are club-shaped, four-spored, and measure 20–31 by 5–10 μm. The pleurocystidia (cystidia on the gill face) are fusoid-ventricose (distinctly enlarged in the middle and tapered toward both ends), sometimes with an elongated neck. The cheilocystidia (cystidia on the gill edge) are also fusoid-ventricose with a neck that is sometimes short and bulbous; they measure 25–50 by 6–20 μm. The hyphae do not have clamp connections. [12]

Similar species

Because of its occurrence on the fruit bodies of other agarics, V. surrecta is unlikely to be confused with other mushrooms. Other parasitic mushrooms include Asterophora species, but these have thick gills compared to the thin gills of V. surrecta. [14] Collybia species, including C. cookei , C. cirrhata and C. tuberosa are saprobic, and grow on the blackened, decayed remains of other agarics. Their fruit bodies are much smaller than V. surrecta, with cap diameters up to 2 cm (0.8 in). [15] Although some other Volvariella species have an appearance similar to V. surrecta, they grow in grass or in leaf litter. [11]

Habitat and distribution

Clitocybe nebularis is a common host for V. surrecta. Clitocybe Nebularis.JPG
Clitocybe nebularis is a common host for V. surrecta.

Volvariella surrecta grows parasitically on the fruit bodies of Clitocybe species, usually C. nebularis , [12] although it has been reported growing on Tricholoma species, [16] as well as Melanoleuca brevipes . [17] The mushrooms grow in clusters, and fruit in the summer and autumn. [18] The host mushroom is sometimes malformed and assumes an irregular appearance. [19] In an early publication, Charles Bagge Plowright commented "Berkeley's figure ... is rather misleading. So is that given by Knapp under the name Agaricus surrectus ..., inasmuchas they show the Agaric (A. nebularis), upon which it is parasitic, in a very robust condition. In my specimen the host (A. nebularis) was quite sodden and collapsed so as to be practically unrecognisable unless one had known what species to expect." [20]

Volvariella surrecta is a rare species, even though its major host is quite common; the conditions required for the parasite to produce fruit bodies are not well known. [16] Some authors have suggested that it may grow equally well as a parasite or a saprobe. [21] V. surrecta has been found on its host in several different habitat types, including birch woodlands, pine plantations, scrub, thickets of small trees or shrubs beside roads, and under brambles. No definite preference for soil type has been determined, having been found in sands, clay, gravels, and peat. [5] In 1867, Worthington George Smith reported that he had successfully cultivated the species by partially burying fruit bodies under water-soaked rotting fir leaves that were placed in a bell-glass in a warm room. According to his account, a white mycelium grew over the leaves and eventually formed small white pins (immature, undifferentiated fruit bodies) that grew into fully formed mushrooms about two weeks after starting. [22]

The geographical distribution of the fungus includes North America north of Mexico, Northern Africa, Europe, New Zealand, [11] and Asia (Amur region of Russia, [23] India, [24] and Korea [25] ).

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<i>Mycena purpureofusca</i> Species of fungus

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<i>Stropharia caerulea</i> Species of fungus

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References

  1. ↑ "Volvariella surrecta (Knapp) Singer 1951". MycoBank. International Mycological Association. Retrieved 2012-07-09.
  2. 1 2 "Volvaria hypopithys subsp. loveiana (Berk.) Konrad & Maubl. 1924". MycoBank. International Mycological Association. Retrieved 2012-07-09.
  3. ↑ Knapp JL (1829). The Journal of A Naturalist. London, UK: J. Murray. pp. 377–9. doi:10.5962/bhl.title.26335.
  4. ↑ Berkeley MJ (1836). The English Flora: Fungi. Vol. 5. p. 104.
  5. 1 2 3 Wells S. (1998). "Volvariella surrecta – a note on its occurrence in Britain". Mycologist. 12 (4): 182–3. doi:10.1016/S0269-915X(98)80079-7.
  6. ↑ Murrill WA (1917). North American Flora (PDF). Vol. 2. New York, New York: New York Botanical Garden. pp. 140–1.
  7. ↑ Ramsbottom J. (1942). "Volvaria surrecta (Knapp) comb.nov". Transactions of the British Mycological Society. 25 (3): 326–8. doi:10.1016/s0007-1536(42)80022-4.
  8. ↑ Singer R. (1949). The Agaricales in Modern Taxonomy. Lilloa. Vol. 22 (2nd ed.). Weinheim, Germany: Cramer. p. 401.
  9. ↑ Justo A, Vizzini A, Minnis AM, Menolli N Jr, Capelari M, Rodríguez O, Malysheva E, Contu M, Ghignone S, Hibbett DS (2011). "Phylogeny of the Pluteaceae (Agaricales, Basidiomycota): taxonomy and character evolution" (PDF). Fungal Biology. 115 (1): 1–20. doi:10.1016/j.funbio.2010.09.012. hdl: 2318/74776 . PMID   21215950. Archived from the original (PDF) on 2012-09-16. Retrieved 2012-07-09.
  10. ↑ Konrad P, Maublanc A (1924). Icones Selectae Fungorum. Vol. 1. Paris, France: Lechevallier. p. 17:2.
  11. 1 2 3 4 5 Roberts P, Evans S (2011). The Book of Fungi. Chicago, Illinois: University of Chicago Press. p. 321. ISBN   978-0226721170.
  12. 1 2 3 4 Shaffer R. (1957). "Volvariella in North America". Mycologia. 49 (4): 545–79 (see pp. 574–5). doi:10.2307/3756159. JSTOR   3756159.
  13. ↑ Pegler DN, Legon NW (1998). "Profiles of fungi". Mycologist. 12 (4): 180–2. doi:10.1016/S0269-915X(98)80078-5.
  14. ↑ Smith AH (1975). A Field Guide to Western Mushrooms. Ann Arbor, Michigan: University of Michigan Press. p. 172. ISBN   0-472-85599-9.
  15. ↑ Knudsen H, Vesterhout J, eds. (2008). Funga Nordica. Copenhagen, Denmark: Nordsvamp. p. 403. ISBN   978-87-983961-3-0.
  16. 1 2 Moss M. (2005). "Volvariella surrecta – Piggyback Rosegill". Field Mycology. 6 (3): 83–4. doi: 10.1016/S1468-1641(10)60316-7 .
  17. ↑ Celka D. (2000). "Volvariella surrecta: A new species in the mycoflora of Poland". Acta Mycologica. 35 (2): 153–56. doi: 10.5586/am.2000.018 . ISSN   0001-625X.
  18. ↑ Miller HR, Miller OK (2006). North American Mushrooms: A Field Guide to Edible and Inedible Fungi. Guilford, Connecticut: Falcon Guide. p. 205. ISBN   0-7627-3109-5.
  19. ↑ Harper ET (1916). "Two parasitic mushrooms". Mycologia. 8 (2): 65–72. doi:10.2307/3753429. JSTOR   3753429.
  20. ↑ Plowright CB (1903). "Volvaria loveana". The Gardeners' Chronicle. 3. 34: 318.
  21. ↑ Buller AHR (1909). Researches on Fungi. Vol. 3. London, UK: Longmans, Green. pp. 442–6.
  22. ↑ Smith WG (1867). "On the artificial production of Agaricus (Volvaria) loveianus, Berk". Journal of Botany. 5: 365–7.
  23. ↑ Taranina NA (2005). "Agaricoid basidiomycetes of forest stow "Muhinka" (Amur region)". Mikologiya i Fitopatologiya (in Russian). 39 (5): 55–63. ISSN   0026-3648.
  24. ↑ Atri NS, Kour H (2005). "Some unrecorded wild mushrooms of Punjab, India". Mushroom Research. 14 (2): 56–9. ISSN   0972-4885.
  25. ↑ Seok S-J, Kim Y-S, Lee K-J (1994). "Higher fungi in Mt. Chilgap". Korean Journal of Mycology. 22 (3): 209–15. ISSN   0253-651X.
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