Geastrales

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Geastrales
Geastrum triplex.jpg
Geastrum triplex
Scientific classification Red Pencil Icon.png
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Subclass: Phallomycetidae
Order: Geastrales
K.Hosaka & Castellano (2007) [1]
Family: Geastraceae
Corda (1842) [2]
Type genus
Geastrum
Pers. (1801)
Genera

Geasteroides
Geastrum
Myriostoma
Nidulariopsis
Phialastrum
Radiigera
Schenella
Sphaerobolus

Synonyms [3]

Sphaerobolaceae J.Schröter (1889)

Geastrales is an order of gasterocarpic basidiomycetes (fungi) that are related to Cantharellales. The order contains the single family Geastraceae, which includes the "earthstars" formerly placed in Lycoperdales, or Phallales. [4] [5]

Approximately 64 species are classified in this family, divided among eight genera, including Geastrum , Myriostoma and Sphaerobolus . Sphaerobolus species are known as "shotgun fungus" or "cannonball fungus". They colonize wood-based mulches and may throw black, sticky, spore-containing globs onto nearby surfaces. [6] [7]

The fruiting bodies of several earthstars are hygroscopic: in dry weather the "petals" will dry and curl up around the soft spore sac, protecting it. In this state, often the whole fungus becomes detached from the ground and may roll around like a tumbleweed. Once mature, their exoperidium splits into a variable number of rays, which give Geastrum their visible star shape. The exoperidial rays are there to protect the endoperidial body and orchestrate spore dispersal. [8] In wetter weather, the "petals" moisten and uncurl; some even curl backward lifting the spore sac up. This allows rain or animals to hit the spore sac so, emitting spores when enough moisture is present for them to germinate and establish.

Related Research Articles

<span class="mw-page-title-main">Phallales</span> Order of fungi

The Phallales are an order of fungi in the subclass Phallomycetidae. The order contains two families: the Claustulaceae, and the Phallaceae, which, according to a 2008 estimate, collectively contain 26 genera and 88 species.

<span class="mw-page-title-main">Lycoperdales</span> Order of fungi

The Lycoperdales are a now outdated order of fungi. The order included some well-known types such as the giant puffball, the earthstars, and other tuberous fungi. They were defined as having epigeous basidiomes, a hymenium present, one to three layers in the peridium, powdery gleba, and brown spores.

<i>Auriscalpium</i> Genus of fungi

Auriscalpium is a genus of mushrooms typifying the family Auriscalpiaceae.

<span class="mw-page-title-main">Dothideomycetes</span> Class of fungi

Dothideomycetes is the largest and most diverse class of ascomycete fungi. It comprises 11 orders 90 families, 1,300 genera and over 19,000 known species. Traditionally, most of its members were included in the loculoascomycetes, which is not part of the currently accepted classification. This indicates that several traditional morphological features in the class are not unique and DNA sequence comparisons are important to define the class.

<span class="mw-page-title-main">Cortinariaceae</span> Family of mushrooms

The Cortinariaceae are a large family of gilled mushrooms found worldwide, containing over 2100 species. The family takes its name from its largest genus, the varied species of the genus Cortinarius. Many genera formerly in the Cortinariaceae have been placed in various other families, including Hymenogastraceae, Inocybaceae and Bolbitiaceae.

<span class="mw-page-title-main">Gomphales</span> Order of fungi

The Gomphales are an order of basidiomycete fungi. Some or all families belonging to Gomphales have been sometimes included in the order Phallales, the now-obsolete Ramariaceae was also previously included in Cantharellales. Recent phylogenetic analyses include in Gomphales the families of the original description of the order by Walter Jülich, with addition of Clavariadelphaceae. According to one 2008 estimate, the Gomphales contain 18 genera and 336 species.

<span class="mw-page-title-main">Hysterangiales</span> Order of fungi

The Hysterangiales are an order of fungi in the class Agaricomycetes, subclass Phallomycetidae. According to one 2008 estimate, the order contains five families, 18 genera, and 114 species.

<i>Geastrum</i> Genus of fungi

Geastrum is a genus of puffball-like mushrooms in the family Geastraceae. Many species are known commonly as earthstars.

<i>Sphaerobolus</i> Genus of fungi

Sphaerobolus is a genus of fungi in the family Geastraceae. Commonly known as the "shotgun fungus", "artillery fungus" or "cannonball fungus", species discharge their spores with explosive force. Discharged spore sacs are sticky and have a tendency to strongly adhere to whatever surface they encounter, making them a nuisance to homeowners, pressure washing contractors, landscape mulch producers and insurance companies.

<span class="mw-page-title-main">Geoglossaceae</span> Family of fungi

Geoglossaceae is a family of fungi in the order Geoglossales, class Geoglossomycetes. These fungi are broadly known as earth tongues. The ascocarps of most species in the family Geoglossaceae are terrestrial and are generally small, dark in color, and club-shaped with a height of 2–8 cm. The ascospores are typically light-brown to dark-brown and are often multiseptate. Other species of fungi have been known to parasitize ascocarps. The use of a compound microscope is needed for accurate identification.

<i>Myriostoma</i> Genus of fungi

Myriostoma is a fungal genus in the family Geastraceae. Basidiocarps resemble earthstars, but the spore sac is supported by multiple columns and has multiple ostioles instead of a single, apical ostiole. Until 2017, the genus was thought to be monotypic with a single, widespread species, Myriostoma coliforme. Recent research has, however, shown that at least six species occur worldwide.

<i>Geastrum pectinatum</i> Species of fungus

Geastrum pectinatum is an inedible species of mushroom belonging to the earthstar family of fungi. Although young specimens are spherical, fruit body development involves the outer layer of tissue splitting open like a star into 7 to 10 pointed rays that eventually bend back to point downward, revealing a small – 1 to 2.5 cm broad – spore sac. The spore sac is supported by a small radially wrinkled stalk. There is a distinct conical opening (peristome) at the top of the spore sac that is up to 8 mm (0.3 in) long. It is commonly known as the beaked earthstar or the beret earthstar, in reference to the shape of the spore sac and its prominent, protruding peristome. The mass of spores and surrounding cells within the sac, the gleba, is dark-brown, and becomes powdery in mature specimens. Spores are spherical, measuring 4 to 6 micrometers in diameter, with warts on their surfaces. Although uncommon, Geastrum pectinatum has a cosmopolitan distribution, and has been collected in various locations in Europe, North and South America, Asia, Australia and Africa, where it grows on the ground in open woods. Like several other earthstars, crystals of calcium oxalate are found on G. pectinatum, and are thought to be involved in fruit body maturation.

<i>Astraeus hygrometricus</i> Cosmopolitan species of fungus in the family Diplocystaceae.

Astraeus hygrometricus, commonly known as the hygroscopic earthstar, the barometer earthstar, or the false earthstar, is a species of fungus in the family Diplocystaceae. Young specimens resemble a puffball when unopened. In maturity, the mushroom displays the characteristic earthstar shape that is a result of the outer layer of fruit body tissue splitting open in a star-like manner. The false earthstar is an ectomycorrhizal species that grows in association with various trees, especially in sandy soils. A. hygrometricus was previously thought to have a cosmopolitan distribution, though it is now thought to be restricted to Southern Europe, and Astraeus are common in temperate and tropical regions. Its common names refer to the fact that it is hygroscopic (water-absorbing), and can open up its rays to expose the spore sac in response to increased humidity, and close them up again in drier conditions. The rays have an irregularly cracked surface, while the spore case is pale brown and smooth with an irregular slit or tear at the top. The gleba is white initially, but turns brown and powdery when the spores mature. The spores are reddish-brown, roughly spherical with minute warts, measuring 7.5–11 micrometers in diameter.

<i>Astraeus</i> (fungus) Genus of fungi

Astraeus is a genus of fungi in the family Diplocystaceae. The genus, which has a cosmopolitan distribution, contains nine species of earthstar mushroom. They are distinguished by the outer layer of flesh (exoperidium) that at maturity splits open in a star-shape manner to reveal a round spore sac. Additionally, they have a strongly hygroscopic character—the rays will open when moist, but when hot and dry will close to protect the spore sac. Species of Astraeus grow on the ground in ectomycorrhizal associations with trees and shrubs. Despite their similar appearance to the Geastrum earthstars Astraeus is not closely related.

<i>Geastrum triplex</i> Species of fungus in the family Geastraceae

Geastrum triplex is a fungus found in the detritus and leaf litter of hardwood forests around the world. It is commonly known as the collared earthstar, the saucered earthstar, or the triple earthstar—and less commonly by the alternative species name Geastrum indicum. It is the largest member of the genus Geastrum and expanded mature specimens can reach a tip-to-tip length of up to 12 centimeters (4.7 in).

<i>Geastrum jurei</i> Species of fungus

Geastrum jurei is a species of fungus in the Geastrales, or earthstar fungi. It is known only from Algarrobo, in the Valparaíso province of Chile. It is a fornicate species of earthstar, meaning that the tips of the rays press down so as to raise the spherical spore sac into the air.

<i>Geastrum quadrifidum</i> Species of fungus in the family Geastraceaea

Geastrum quadrifidum, commonly known as the rayed earthstar or four-footed earthstar, is an inedible species of mushroom belonging to the genus Geastrum, or earthstar fungi. First described scientifically by Christian Hendrik Persoon in 1794, G. quadrifidum is a cosmopolitan—but not common—species of Europe, the Americas, Africa, Asia, and Australasia. The fungus is a saprobe, feeding off decomposing organic matter present in the soil and litter of coniferous forests.

Descomyces is a genus of fungus in the family Cortinariaceae. The genus contains five species formerly restricted to Australasia, but now more widespread due to having been spread with Eucalyptus. Descomyces was described in 1993 by mycologists Neale Bougher and Michael A. Castellano.

Kjeldsenia is a fungal genus in the family Claustulaceae. It contains the single truffle-like species Kjeldsenia aureispora, described in 1995 and found in Mendocino County, California. The genus name honors C.K. Kjeldsen, professor of botany at Sonoma State University, while the specific epithet aureispora refers to the color of the spores when they are viewed in transmitted light.

The Chytridiaceae are a family of fungi in the order Chytridiales. The family contains 33 genera and 238 species according to a 2008 estimate.

References

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  2. Corda ACJ. (1842). Icones fungorum hucusque cognitorum (in Latin). Vol. 5. Prague: J.G. Calve. pp. 1–92 (see p. 25).
  3. Kirk et al. 2008, p. 648
  4. Kirk PM, Cannon PF, David JC, Stalpers JA (2001). Ainsworth & Bisby's Dictionary of the Fungi (9th ed.). CABI Bioscience. p. 205. ISBN   978-0-85199-377-5.
  5. Kirk, PM; Cannon, PF; Minter, DW; Stalpers, JA (2008). Dictionary of the Fungi (10th ed.). CAB International. p. 274. ISBN   9780851998268.
  6. Lehman R (1985). "Black spots on houses—an insect or disease problem?". Penn Dept Agric Bur Pl Ind, Reg Hort. 11: 15–16.
  7. Brantley EA, Davis DD, Kuhns L (2001). "Biological control of the artillery fungus, Sphaerobolus stellatus, with Trichoderma harzianum and Bacillus subtilis". Journal of Environmental Horticulture. 19 (1): 21–23. doi: 10.24266/0738-2898-19.1.21 .
  8. Kuhar, F., Castiglia, V., & Papinutti, L. (2013). Geastrum species of the La Rioja province, Argentina. Mycotaxon, 122, 145-156. https://doi.org/10.5248/122.145