Geasteroides

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Geasteroides
Scientific classification
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Geasteroides

Long (1917)
Type species
Geasteroides texensis
Long (1917)
Synonyms
  • Geasteropsis texensis(Long) E.Fisch. (1933)
  • Terrostella texensis(Long) Long (1945)

Geasteroides is a fungal genus in the family Geastraceae. A monotypic genus, it contains the single species Geasteroides texensis, described by American mycologist William Henry Long in 1917.

Contents

Taxonomy

Long described both the new genus and species in a 1917 article in the journal Mycologia . The type collection was made in Denton, Texas in October 1907. Long called it "a Calvatia among the geaster". [1] In 1945, Long replaced the name with Terrostella, suggesting that Geasteroides was illegitimate because it had been used by Giovanni Antonio Battarra in 1755. [2] However, later changes in the nomenclatural rules meant that names of gasteroid species published before 1801 no longer had priority, rendering Terrostella illegitimate. [3] Patricio Ponce de León transferred the Congolese species Geastrum barbatum (described by Dissing & M. Lange in 1962) to Geasteroides in 1968, but this has since been transferred to the genus Phialastrum . [4]

Description

Geasteroides texensis has a fruit body that splits open in maturity in a star-like fashion to reveal a spherical inner spore sac (gleba). The ochre to whitish outer layer of skin, the exoperidium, is thick and leathery and often has a thin layer of adhering cobweb-like mycelium and debris that peels away as the fungus matures. The exoperidium splits open into four to seven rays that are curved backward overall, with tips curved inward. Expanded fruit bodies are 4–10 cm (1.6–3.9 in) in diameter. The inner surface of the exoperidum is dark brown, with deep cracks when dry. The special inner endoperidium rests upon a short stipe that broadens to a top-shaped, corky base. The height of base and endoperidium is 1–3 cm (0.4–1.2 in), and it is roughly the same width. The fragile, whitish to brownish endoperidium opens irregularly near the top to reveal purplish-brown gleba. In some mature, weathered specimens, the gleba may be completely absent, with only the interior stipe and corky base remaining in the endoperidium. The spores are spherical with faint warts on the surface, and measure 3–5  µm in diameter. Capillitium threads in the gleba are long and sparingly branched, measuring 7–10 µm thick. [1]

Habitat and distribution

The species is known from Texas, where it grows in loamy soil around the decaying stumps of post oak (Quercus stellata). [1]

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Phallaceae is a family of fungi, commonly known as stinkhorns, within the order Phallales. Stinkhorns have a worldwide distribution, but are especially prevalent in tropical regions. They are known for their foul-smelling, sticky spore masses, or gleba, borne on the end of a stalk called the receptaculum. The characteristic fruiting-body structure, a single, unbranched receptaculum with an externally attached gleba on the upper part, distinguishes the Phallaceae from other families in the Phallales. The spore mass typically smells of carrion or dung, and attracts flies, beetles and other insects to help disperse the spores. Although there is great diversity in body structure shape among the various genera, all species in the Phallaceae begin their development as oval or round structures known as "eggs". The appearance of Phallaceae is often sudden, as gleba can erupt from the underground egg and burst open within an hour. According to a 2008 estimate, the family contains 21 genera and 77 species.

<i>Calvatia craniiformis</i> Species of puffball fungus

Calvatia craniiformis, commonly known as the brain puffball or the skull-shaped puffball, is a species of puffball fungus in the family Agaricaceae. It is found in Asia, Australia, and North America, where it grows on the ground in open woods. Its name, derived from the same Latin root as cranium, alludes to its resemblance to an animal's brain. The skull-shaped fruit body is 8–20 cm (3–8 in) broad by 6–20 cm (2–8 in) tall and white to tan. Initially smooth, the skin (peridium) develops wrinkles and folds as it matures, cracking and flaking with age. The peridium eventually sloughs away, exposing a powdery yellow-brown to greenish-yellow spore mass. The puffball is edible when the gleba is still white and firm, before it matures to become yellow-brown and powdery. Mature specimens have been used in the traditional or folk medicines of China, Japan, and the Ojibwe as a hemostatic or wound dressing agent. Several bioactive compounds have been isolated and identified from the brain puffball.

<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.

<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>Lysurus periphragmoides</i> Species of fungus

Lysurus periphragmoides, commonly known as the stalked lattice stinkhorn or chambered stinkhorn, is a species of fungus in the stinkhorn family. It was originally described as Simblum periphragmoides in 1831, and has been known as many different names before being transferred to Lysurus in 1980. The saprobic fungus has a pantropical distribution, and has been found in Africa, Asia, Australasia, and the Americas, where it grows on fertile ground and on mulch. The fruit body, which can extend up to 15 cm (5.9 in) tall, consists of a reddish latticed head placed on top of a long stalk. A dark olive-green spore mass, the gleba, fills the interior of the lattice and extends outwards between the arms. Like other members of the family Phallaceae, the gleba has a fetid odor that attracts flies and other insects to help disperse its spores. The immature "egg" form of the fungus is considered edible.

<i>Battarrea phalloides</i> Species of fungus

Battarrea phalloides is an inedible species of mushroom in the family Agaricaceae, and the type species of the genus Battarrea. Known in the vernacular as the scaley-stalked puffball, sandy stiltball, or desert stalked puffball, it has a woody, slender, and shaggy or scaly stem that is typically up to 40 centimeters (15.7 in) in length. Although its general appearance resembles an agaric with stem and gills, atop the stem is a spore sac, consisting of a peridium and a powdery internal gleba. In maturity, the spore sac ruptures to release the spores. Battarrea phalloides is found in dry, sandy locations throughout the world, and has been collected from Africa, Asia, Australia, Europe, North America, and South America. There is currently some disagreement in the literature as to whether the European B. stevensii is the same species as B. phalloides.

<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</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>Bovista aestivalis</i> Species of fungus

Bovista aestivalis is a species of small puffball in the family Agaricaceae. It is generally found in the coastal regions of California, but was reported from Korea in 2015. This fungus is often confused with Bovista dermoxantha, because of its similar peridium, and Bovista plumbea. The surest way to tell the species apart is to examine the spores and exoperidium, respectively, with a microscope.

<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>Mycenastrum</i> Genus of fungi

Mycenastrum is a fungal genus in the family Agaricaceae. The genus is monotypic, containing one widely distributed species, Mycenastrum corium, known by various common names: the giant pasture puffball, leathery puffball, or tough puffball. The roughly spherical to turnip-shaped puffball-like fruit bodies grow to a diameter of 6–24 cm (2–9 in). Initially covered by a thick, felted, whitish layer, the puffballs develop a characteristic checkered skin (peridium) in age. When the internal spore mass, the gleba, is firm and white, the puffball is edible, although some individuals may suffer mild gastrointestinal symptoms after eating it. As the spores mature, the gleba turns first yellowish then purplish brown. Spores are released when the peridium eventually splits open into irregularly shaped sections. Microscopically, the gleba consists of spherical, dark brown spores with rounded bumps on their surfaces, and a capillitium—intricately branched fibers that form long thorn-like spines. The puffball grows on or in the ground in prairie or desert habitats. Although widely distributed, it is not commonly encountered. Mycenastrum corium is a threatened species in Europe.

<i>Agaricus deserticola</i> Species of fungus in the family Agaricaceae endemic to southwestern and western North America

Agaricus deserticola, commonly known as the gasteroid agaricus, is a species of fungus in the family Agaricaceae. Found only in southwestern and western North America, A. deserticola is adapted for growth in dry or semi-arid habitats. The fruit bodies are secotioid, meaning the spores are not forcibly discharged, and the cap does not fully expand. Unlike other Agaricus species, A. deserticola does not develop true gills, but rather a convoluted and networked system of spore-producing tissue called a gleba. When the partial veil breaks or pulls away from the stem or the cap splits radially, the blackish-brown gleba is exposed, which allows the spores to be dispersed.

<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.

Geastrum leptospermum is a species of fungus in the family Geastraceae. It was first described scientifically by American mycologist George F. Atkinson in 1903. The fungus produces small fruit bodies and grows in mosses on tree trunks.

<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.

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

Geastrum welwitschii is a species of fungus in the earthstar family. When young and unopened, the fruit bodies resemble small spheres lying in the soil. As the mushroom matures, the thick leathery outer layer of tissue splits star-like to form a number of fleshy arms, which curve downward to reveal the inner spore sac that contains the fertile tissue known as the gleba. The spore sac has a narrow grooved opening at the top where the spores are released. Fully expanded, the fruit bodies are up to 35 mm (1.4 in) wide and 58 mm (2.3 in) tall. First collected from Spain in the mid-19th century, the fungus is distributed in Europe, North America, and Bermuda.

<i>Myriostoma coliforme</i> Genus of fungus

Myriostoma coliforme is a fungal species 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. In the UK, its recommended English name is pepper pot. It has also been called "salt-shaker earthstar". The fungus has a north temperate distribution, but was formerly thought to be more widespread due to confusion with related Myriostoma species. Myriostoma coliforme is an uncommon species and appears on the Red Lists of 12 European countries. In 2004 it was one of 33 species proposed for protection under the Bern Convention by the European Council for Conservation of Fungi.

<i>Phallus calongei</i> Stinkhorn fungus from Pakistan

Phallus calongei is a species of stinkhorn mushroom. Found in Pakistan, it was described as new to science in 2009. Starting out as an "egg", the fully expanded fruit body consists of a single, thick, stipe with a cap attached to the apex and covered with olive-green, slimy spore-containing gleba. It is distinguished from other similar Phallus species by a combination of features, including a pinkish, reticulated (network-like) cap, and a stipe that is tapered at both ends. The edibility of the mushroom is unknown.

<i>Aseroe coccinea</i> Species of fungus

Aseroe coccinea is a species of stinkhorn fungus in the genus Aseroe. First reported in Japan in 1989, it was not formally validated as a species until 2007, the delay related to a publication error. The receptacle, or fruit body, begins as a partially buried whitish egg-shaped structure, which bursts open as a hollow white stipe with reddish arms, then erupts and grows to a height of up to 15 mm (0.6 in). It matures into a star-shaped structure with seven to nine thin reddish tubular "arms" up to 10 mm (0.4 in) long radiating from the central area. The top of the receptacle is covered with dark olive-brown spore-slime, or gleba. A. coccinea can be distinguished from the more common species A. rubra by differences in the color of the receptacle, and in the structure of the arms. The edibility of the fungus has not been reported.

<i>Bovista pila</i> Species of fungus

Bovista pila, commonly known as the tumbling puffball, is a species of puffball fungus in the family Agaricaceae. A temperate species, it is widely distributed in North America, where it grows on the ground on road sides, in pastures, grassy areas, and open woods. There are few well-documented occurrences of B. pila outside North America. B. pila closely resembles the European B. nigrescens, from which it can be reliably distinguished only by microscopic characteristics.

References

  1. 1 2 3 Long WH. (1917). "Notes on new or rare species of Gasteromycetes". Mycologia. 9 (5): 271–4. doi:10.2307/3753147.
  2. Long WH. (1945). "Studies in the Gasteromycetes XI. The genera Trichaster and Terrostella". Mycologia. 37 (5): 601–8. doi:10.2307/3754696.
  3. Ponce de Lóon P. (1968). A Revision of the Family Geastraceae. Fieldiana: Botany. Vol. 31. Field Museum of Natural History. pp. 304–7.
  4. "Geasteroides barbata (Dissing & M. Lange) P. Ponce de León, Fieldiana, Bot. 31: 306 (1968)". Index Fungorum. CAB International. Retrieved 2013-12-03.