Mushroom, the conspicuous umbrella-shaped fruiting body (sporophore) of certain fungi, typically of the order Agaricales in the phylum Basidiomycota but also of some other groups. Class 12 Class 11 Class 10 Class 9 Class 8 Class 7 Class 6. Agaricus deserticola, commonly known as the gasteroid agaricus, is a species of fungus in the family Agaricaceae. It is the connecting link between the two passing on one hand through Secotium to the true Gasteromycetes. A cDNA library consisting of a total of 4,608 cDNA clones was screened by colony blot hybridization using gene-specific DNA oligos (60 nt) as probes. Secotium decipiens Peck (1895) Photo: KOURTESY OF KING Text Credit: WIKIPEDIA  In 1916, William Murrill listed the species in Gymnopus, but did not explain the reason for the generic transfer. Scales begin to appear on the surface of the peridium of some specimens at about this time. 5 points smriti56 Asked 07.10.2019. Other research suggests that the β-glucans may not be the only method of immune modulation by Agaricus blazei. Chemistry. Biology. Our method exploits the T-DNA transfer mechanism in Agrobacterium tumefaciens and relies on the reproductive fruiting body as the recipient tissue. It is shaped like a narrow club, and the base may reach widths up to 4.5 cm (1.8 in). Any of numerous mushrooms having an umbrellalike cap with gills beneath, chiefly belonging to the order Agaricales. The lower edge of the peridium is further stretched as it is pulled upward and outward. The hyphal walls of Agaricus bisporus and Agaricus campestris fruiting bodies were isolated and purified. View Package Photos.  A separate analysis showed A. deserticola to be closely related to A. arvensis and A. The major components of carbohydrate polymers were glucose, N-acetylglucosamine, and glucosamine. Agaricus blazei Murill (subrufescens) is a member of the basidiomycete’s family.This edible mushroom originates from a small coastal village called Piedade near Sao Paulo in Brazil [1.] As growth progresses, the stem elongates and the peridium becomes more rounded, increasing in size until maturity. It is the dikaryotic mycelium that forms the umbrella shaped fruit body called the basidiocarp. The species was first described scientifically as Secotium texense by Miles Joseph Berkeley and Moses Ashley Curtis in 1873, based on specimens sent to them from western Texas. Updated DailyMed will deliver notification of updates and additions to Drug Label information currently shown on this site through its RSS feed. Its caps are scalier than the typical variety, and range from 6 to 12 cm (2.4 to 4.7 in) or more in diameter, with a stem 10 to 25 cm (3.9 to 9.8 in) and up to 4.5 cm (1.8 in) thick. When the species was known as a Gyrophragmium, Fischer thought it to be close to Montagnites, a genus he considered a member of the family Agaricaceae. It was thought by some mycologists to be a member of the Gasteromycetes, a grouping of fungi in the basidiomycota that do not actively discharge their spores. ADVERTISEMENTS: Mature Fruiting Body: 1. See answers (2) Ask for details ; Follow Report What do you need to know? Gyrophragmium texense (Berk. The dried fruiting body of certain fungal species in the genus Fomes, formerly used in medicine, especially to inhibit the production of sweat. When mature, the cap contains powdery, dark brown spores. Safety. Nutrients 2019;11(10):2339. doi: 10.3390/nu11102339. Structure: A complete Agaricus can be divided into two parts (I) The main body or Mycelium or Vegetative mycelium (living inside the soil) (II) Fruiting body or basidiocarp (present above the soil and edible in young stage) Mycelium: It consists of numerous white-colored hyphae of transverse partition walls. The fruit bodies are found growing singly to sometimes more numerous, at low elevations, and typically in sandy soil. If you are a consumer or patient please visit Children under 12 years of age: Consult doctor prior to use.  It also grows in lawns and fields. Articles: PubMed:Brefeldin A is an estrogenic, Erk1/2-activating component in the extract of Agaricus blazei mycelia. Adults and children 12 years of age and older: Four drops of water in teaspoon of water 3 times a day as needed. To increase coverage of protein identification of an Agaricus bisporus fruiting body, we analyzed the crude protein fraction of the fruiting body by using a shotgun proteomics approach where 7 MudPIT (Multi-Protein identification Technology) runs were conducted and the MS/MS spectra from the 7 MudPIT runs were merged.  The cap is composed of three distinct tissue layers: an outer volval layer, a middle cuticular layer (cutis), and an inner (tramal) layer which supports the gleba. Physics. Polysaccharides extracted from Himematsutake, the fruiting body of Agaricus blazei Murill with hot water were fractionated and purified by ethanol precipitation, ion-exchange chromatography, gel-filtration, affinity chromatography, etc. Out of scope information includes radiopharmaceuticals, contrast media, herbals, homeopathics, and food. The genus Agaricus, with more than 200 species, has several prominent members, ... Puffballs produce spores internally in a spherical fruiting body.  The species was known by this name for about 60 years, until a 2004 phylogenetic study revealed the taxon's close evolutionary relationship with Agaricus, a possibility insinuated by Curtis Gates Lloyd a century before. )", "New or imperfectly known Gasteromycetes", "Extralimited, excluded and doubtful species", "Some interesting gasteroid and secotioid fungi from Sonora, Mexico", https://en.wikipedia.org/w/index.php?title=Agaricus_deserticola&oldid=976954883, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, Cladogram showing the phylogeny and relationships of, This page was last edited on 6 September 2020, at 02:27. Agaricus Mushroom extract supplement health benefit and side effects, dosage and review October 10 2017 by Ray Sahelian, M.D. Fresh specimens are usually white, but will age to a pale tan; dried fruit bodies are light gray or tan mixed with some yellow. FDA Safety Recalls,  A. deserticola has been collected in several states in northwestern Mexico, including Sonora, Chihuahua, and Baja California. & M.A.Curtis) Massee (1891) What we recognize as a mushroom or toadstool is the fruiting body. In this study, physicochemical changes occurring in the fruiting bodies of Agaricus bisporus champignons, subjected to mechanical vibrations under model conditions and a … There are different varieties of agaricus mushroom. A Fruiting Body Tissue Method for Efﬁcient Agrobacterium-Mediated Transformation of Agaricus bisporus XI CHEN, MICHELLE STONE, CARL SCHLAGNHAUFER, AND C. PETER ROMAINE* Department of Plant Pathology, The Pennsylvania State University, University Park, Pennsylvania 16802 Received 28 April 2000/Accepted 1 August 2000 We describe a modiﬁed Agrobacterium-mediated method for the … It is native to grasslands in North America and Europe. NCERT P Bahadur IIT-JEE Previous Year Narendra Awasthi MS Chauhan. It is Cosmo pollutant in distribution. Formerly named Longula texensis (among several other synonyms), the fungus was transferred to the genus Agaricus in 2004 after molecular analysis showed it to be closely related to species in that genus. Fungi can be produced technically through fermentative process and through stages of media preparation, inoculation, and incubation. A total of 17 polysaccharide samples thus obtained were given an antitumor activity test (Sarcoma Agaricus blazei is also known by a number of other names including ‘Cogumelo do Sol’ in Brazil, ‘Himematsutake’ in Japan, (Reviewed in [2. Extract Of Agaricus Blazei Fruiting Body , Find Complete Details about Extract Of Agaricus Blazei Fruiting Body,Extract Of Agaricus Blazei Fruiting Body,Natural Fruit Extracts,Olive Fruit Extract from Fungus Supplier or Manufacturer-Jiangsu Zibutang Pharmaceutical Co., Ltd. Podaxon strobilaceus Copeland (1904) Agaricus bisporus plays an important role in ecological processes and is one of the most widely cultivated mushrooms worldwide. PubMed, Sign in Sign up for FREE Prices and download plans Fruiting body of agaricus is called Ask for details ; Follow Report by Shravya3726 09.07.2018 Log in to add a comment p.o. Fresh mushrooms (1 kg) were blended at high speed with 2 l of 1/2× strength PEM1 buffer plus 0.5 mM GTP. It is Cosmo pollutant in distribution. , Species of fungus in the family Agaricaceae endemic to southwestern and western North America, These young fruit bodies have not yet formed scales, and have a, In mature mushrooms, the peridium rips to reveal the dark brown, lamellate, "Notices of North American fungi (cont. Calvatia contains about 35 species, including the giant puffball (C. gigantea), which can be as large as 120 cm (4 feet) across. The edibility of Agaricus deserticola mushrooms is not known definitively. Drug Label Info. The unique attributes of fungi thus herald great promise for their application in biotechnology and industry. It is a black, blade-shaped fungus found primarily in the high altitudes of the Tibetan plateau in China that parasitizes moth caterpillars. Agaricus mushroom is used for cancer, type 2 diabetes, high cholesterol, “hardening of the arteries” (arteriosclerosis), ongoing liver disease, bloodstream disorders, and digestive problems. Comment; Complaint; Link; Know the Answer? He concluded that the species did not fit in the limits set for the genus Gyrophragmium and so created the new genus Longia with Longia texensis as the type species. They are nonamyloid (not absorbing iodine when stained with Melzer's reagent), black-brown, and have dimensions of 4.5–7.5 by 5.5–6.5 µm. Unlike other Agaricus species, the spores of A. deserticola are not shot off, but are instead dispersed when they sift out of the dried, mature fruit bodies after the peridium breaks open. It is an edible gilled fungus. NCERT P Bahadur IIT-JEE Previous Year Narendra Awasthi MS Chauhan. View abstract. The fruiting body or fruit body in fungi is called the sporocarp. Agaricus texensis, commonly known as the gasteroid agaricus, is a species of fungus in the family Agaricaceae. & M.A.Curtis) Zeller (1945) ... Fruiting body: Absent. Salient features of this procedure include cocultivation ofAgrobacterium and fruiting body gill tissue and use of a vector with a homologous promoter. The tough woody stems are 1–2 cm (0.4–0.8 in) wide, thickening towards the base. RxNorm, Report Adverse The fruit bodies are secotioid, meaning the spores are not forcibly discharged, and the cap does not fully expand. identified functions in the body in a positive manner, which are in different name forms, e.g.  The peridium may also rip in such a way that it appears as if there is a ring at the top of the stem. Keywords: Agaricus bisporus; shotgun proteomics; gene ontology 1. Log in. The basal underground mycelial portion is known as rhizomorph, from which develops the basidiocarp or fruiting body. , A larger variety of the mushroom has been described by Zeller, A. deserticola var. 2.  The spores are spherical in shape or nearly so, smooth, thick-walled, and lack a germ pore. Join now.  This form of growth is called secotioid development, and is typical of other desert-dwelling fungi like Battarrea phalloides, Podaxis pistillaris, and Montagnea arenaria. extract of the fruiting body of the mushroom, agaricus blazei, agaricaceae: himematsutake : mushroom fruiting body extract: jisongrong : mushroom fruiting body extract . It is typically white, staining yellow to orange-yellow or pink when bruised, and becomes woody with age. is this? ric (ăg′ər-ĭk, ə-găr′ĭk) n. 1. Keywords: Agaricus bisporus; shotgun proteomics; gene ontology 1. Stipe: It is the basal part of the basidiocarp. Agaricus bisporus is the most common edible mushroom in Western countries. The fungus produces the fruit body that bears spores above ground in late spring to autumn. Copy the URL below and paste it into your RSS Reader application. … Due to inconsistencies between the drug labels on DailyMed and the pill images provided by RxImage, we no longer display the RxImage pill images associated with drug labels. The torn peridium exposes the internal gleba. Latin Name: Agaricus blazei muril Specification: Polysaccharides 10%~50% Appearance: Yellowish-brown powder Mesh size: 80 Mesh Used Part: Fruit body Grade: Food & Pharmaceutical Test Method: UV . The gleba is divided into wavy plates or lamellae, some of which are fused together to form irregular chambers. & M.A.Curtis) Murrill (1916) Reproduction function only, producing spores to secure survival, with immune system surviving only a few days after spore-release. Fresh mushrooms (1 kg) were blended at high speed with 2 … November 9, 2020. Mushroom is a macro fungus with a distinctive fruiting body that is large enough Found only in southwestern and western North America, A. deserticola is adapted for growth in dry or semi-arid habitats. Files, All Mapping Biology. We have devised an easy and effective genetic transformation method for the preeminent edible mushroom, Agaricus bisporus. If you no longer wish to have this DailyMed RSS service, simply delete the copied URL from your RSS Reader. The characteristics of Agaricus are: Agaricus is terrestrial saprobes.  The cap is 4 to 7.5 cm (1.6 to 3.0 in) in diameter, initially conic, later becoming convex to broadly convex as it matures. The fungus grows in the fields and grassy areas. These common names are applied differently depending on the age and colour of the fruiting body. Clinical Trials, Found only in southwestern and western North America, it is adapted for growth in dry, semiarid habitats. Other mushrooms with which A. deserticola might be confused include the desert fungus species Podaxis pistillaris and Montagnea arenaria. Prices and download plans . Due to the immense range of habitats that fungi inhabit, and the consequent need to compete against a diverse array of other fungi, bacteria, and animals, fungi have developed numerous survival mechanisms. 3. stump puffball. The species' usual habitats include drylands, coastal sage scrub, and desert ecosystems. The Gasteromycetes are now known to be an artificial assemblage of morphologically similar fungi without any unifying evolutionary relationship.  Zeller gives a range that includes as its eastern border central Texas, and extends westward to San Diego County, California, and north to Josephine County, Oregon. Comparison of changes of enzyme levels in axenic and nonaxenic cultures and in cultures of non-fruiting strains indicated that they were associated directly with the fungal mycelium. Fruiting body in Agaricus is called : Books. The standard for the name "mushroom" is the cultivated white button mushroom, Agaricus bisporus; hence the word "mushroom" is most often applied to those fungi (Basidiomycota, Agaricomycetes) that have a stem (), a cap (), and gills (lamellae, sing. A total of 17 polysaccharide samples thus obtained were given an antitumor activity test (Sarcoma 180/mice i.p. The internal gills are free from attachment to the stem, but are attached full-length to the inside of the cap. Agaricus 1000 is a potent 4:1 concentrated extract from Agaricus fruiting body equivalent to 1,000 mg of dried mushroom per capsule. The fruit bodies can reach heights of 18 cm (7.1 in) tall with caps that are up to 7.5 cm (3.0 in) wide. NCERT RD Sharma Cengage KC Sinha. Quantitative analyses revealed that these walls consisted mainly of carbohydrates (78.3–79.2%), lipids (9.9–10.1%), and proteins (8.7–10.2%). Polysaccharides extracted from Himematsutake, the fruiting body of Agaricus blazei Murill with hot water were fractionated and purified by ethanol precipitation, ion-exchange chromatography, gel-filtration, affinity chromatography, etc. Regarded as therapeutic food having anticarcinogenic, anticholesterolaemic, and antiviral properties and also prophylactic properties with regard to coronary heart disease and hypertension. The fruiting body only develops as part of the sexual phase of the fungal life cycle for spore production.In fungi, the sporocarp is the fruiting body (or fruit body).  The range of the fungus is restricted to southwestern and western North America, where it fruits throughout the year, typically during or following cold, wet weather. We anticipate reposting the images once we are able identify and filter out images that do not match the information provided in the drug labels. The fruit bodies are secotioid, meaning the spores are not forcibly discharged, and the cap does not fully expand. Stipe: When the fruit bodies reach a diameter of about 4 to 6 mm (0.16 to 0.24 in), the stem and peridial regions begin to be distinguishable; the peridial region first appears as a small swelling at the apex of the much larger stem regions.  Since this made the new Agaricus texensis an unusable homonym, Gabriel Moreno and colleagues published the new name Agaricus deserticola in 2010. NCERT NCERT Exemplar NCERT Fingertips Errorless Vol … , Species that resemble A. deserticola include the desert fungi Montagnea arenaria and Podaxis pistillaris. 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. , Like other Agaricus species, A. deserticola is saprobic—feeding off dead or decaying organic matter. Popularly, the term mushroom is used to identify the edible sporophores; the term toadstool is often reserved for inedible or poisonous sporophores. Agaricus texensis (Berk. ADVERTISEMENTS: Mature Fruiting Body: 1. Truffle has tantalizing taste and aroma and is most sought after delicacy with great economic value. In Agaricus, the fruiting body is made up of tertiary mycelium. Popularly, the term mushroom is used to identify the edible sporophores; the term toadstool is often reserved for inedible or poisonous sporophores. Chemistry. The fruiting body is called a mushroom 1. major), whose range overlaps that of the typical variety. Drug names that are ambiguous or not compatible with the RxNorm system, such as multivitamins with more than 4,000 characters in their names, are also out of scope. After reading this article you will learn about: 1. 2. Molecular analysis based on the sequences of the partial large subunit of ribosomal DNA and of the internal transcribed spacers shows that A. deserticola is closely related to but distinct from A. 1.  The mushroom used to be common in the San Francisco Bay area before land development reduced its preferred habitats. Prodcut name: Agaricus Blazei Extract Latin Name: Agaricus blazei muril Specification: Polysaccharides 10%~50% Appearance: Yellowish-brown powder Mesh size: 80 Mesh Used Part: Fruit body Grade: Food & Pharmaceutical Test Method: UV . Fungi are an understudied, biotechnologically valuable group of organisms. (iii) It grows best in moist and shady places and is commonly seen during the rainy season. Stop use and ask doctor if symptoms worsen or persist longer than 7 days. The major components of … Examples: Mushroom, Puff balls, bracket fungi, Agaricus, Polyporus, Puccinia, Ustilago. 2. The basidiocarp is differentiated into a long stalk-like stipe and an upper cap-like pileus (Fig. major (originally Longula texensis var. The main body of the fungus is the mass of fine, thread-like, white growth that can be seen throughout the composted material on which the mushroom is feeding. Join now. In this region the hyphae run longitudinally parallel to each other. Biology. Label RSS; Share Bookmark & Share. Answer. Lycoperdon is a genus of 50 cosmopolitan species of small common puffballs. Ohno N, Furukawa M, Miura NN, et al. Fruit bodies: Enduring stage of mushroom life cycle, surviving in highly-competitive environments and producing enzymes, to digest organic substrates and create the fruit body stage. It is rich in cellulose and lignin materials. AGARICUS MUSCARIUS- amanita muscaria fruiting body pellet Boiron. enriched in a fruiting body of Agaricus bisporus, suggesting that the proteins are associated with antioxidant metabolites. Mushroom growth-promoting bacteria have been isolated from casing soil and compost, but microorganisms in the fruiting body have received only a little attention. Since the start of A. Citations, Report Adverse After the fruit body matures and begins to dry out, the lower part of the peridium starts to rip, usually starting from small longitudinal slits near where the peridium attaches to the top of the stem. Gymnopus texensis (Berk. , The fruit body of Agaricus deserticola can grow up to 5 to 18 cm (2.0 to 7.1 in) in height. NCERT DC Pandey Sunil Batra HC Verma Pradeep Errorless.  Curtis Gates Lloyd said of Gyrophragmium: "[it] has no place in the Gasteromycetes. Pileus: Five kilograms of mushrooms were harvested every 2 weeks for 8 weeks. , The species is now thought to have evolved from an Agaricus ancestor, and adapted for survival in dry habitats. The best time to harvest the fruiting body for medicinal purposes is before the cap starts to expand or flatten out and release its spores. Middle School. Abstract Several enzymes were assayed in extracts from mycelium-colonised compost during growth and fruiting of Agaricus bisporus (Lange) Imbach. Events, The dried fruiting body of certain fungal species in the genus Fomes, formerly used in medicine, especially to inhibit the production of sweat. By hyphal fusion the primary mycelium give rise to secondary mycelium. Agaricus blazei-based mushroom extract supplementation to birch allergic blood donors: a randomized clinical trial. Download PDF's . Usually, the arid environment causes the gleba to dry out rapidly. & M.A.Curtis) Geml, Geiser & Royse (2004). major.  George Edward Massee transferred it to the genus Gyrophragmium in 1891, because of its resemblance to the species Gyrophragmium delilei, and because he felt that the structure of the volva as well as the internal morphology of the gleba excluded it from Secotium. The use of fruiting body expl … Mushroom (Agaricus bisporus) Methods Mol Biol. Any of numerous mushrooms having an umbrellalike cap with gills beneath, chiefly belonging to the order Agaricales. Agaricus bisporus (English: Portobello, Portobello mushroom) is a fungus, and the type species of the genus Agaricus. Agaricus Species Classification Although the agaricus mushroom frequently goes by the name Agaricus blazei , there has been some discrepancy among taxonomists about the exact species classification. NCERT DC Pandey Sunil Batra HC Verma Pradeep Errorless. Due to the immense range of habitats that fungi inhabit, and the consequent need to compete against a diverse array of other fungi, bacteria, and animals, fungi have developed numerous survival mechanisms. Agaricus blazei — most commonly known simply as Agaricus — is a mushroom that supports the body’s natural defenses. Agaricus deserticola, commonly known as the gasteroid agaricus, is a species of fungus in the family Agaricaceae. Agaricus mushroom is a fungus.It originated in Brazil, but is now grown in China, Japan, and Brazil for sale. Agaricus also supports metabolic functions. ), More about getting RSS News & Updates from DailyMed, 15 mL in 1 BOTTLE; Type 0: Not a Combination Product, 1 The more common ones are agaricus bisporus, campestris, and blazei. The basidiospore germinates to produce the primary mycelium. The gleba is a drab brown to blackish-brown color, and it becomes tough and brittle as it dries out. The generic name was to honor William Henry Long, an American mycologist noted for his work in describing Gasteromycetes. The flesh is firm when young, white, and will stain light to bright yellow when it is bruised. ... Name Email * Message * Thanks for visiting this site. , The stem is cylindrical, 4 to 15 cm (1.6 to 5.9 in) long and 1 to 2 cm (0.4 to 0.8 in) thick. DailyMed will deliver this notification to your desktop, Web browser, or e-mail depending on the RSS Reader you select to use. Agaricus Species Classification.  Conrad suggested a relationship with Secotium, which he believed to be close to Agaricus.  Montagnea arenaria is a whitish stalked puffball with a hollow, woody stalk and a loose sac-like volva at the base of the stem. A solution containing chemicals that are taken from the plant (extract) is used as medicine. Button stage is a developmental stage of the fruiting body of Agaricus. FDA is not aware of scientific evidence to support homeopathy as effective.----- Zeller also mentioned two additional synonyms: Secotium decipiens (Peck, 1895), and Podaxon strobilaceous (Copeland, 1904). Cordyceps sinensis belongs to a genus of more than 400 species of Ascomycete (sac fungi) found worldwide. Did you know that medicinal mushrooms, such as Agaricus, can be taken daily, year-round, for optimal immune health. 104). The basidia are broadly club-shaped, and mostly four-spored, with long, slender sterigmata. Mushroom, the conspicuous umbrella-shaped fruiting body (sporophore) of certain fungi, typically of the order Agaricales in the phylum Basidiomycota but also of some other groups. The basal underground mycelial portion is known as rhizomorph, from which develops the basidiocarp or fruiting body. 2. It is the basal part of the basidiocarp. Abstract. Ingredient Name Basis of Strength Strength; AMANITA MUSCARIA FRUITING BODY (UNII: DIF093I037) (AMANITA MUSCARIA FRUITING BODY - UNII:DIF093I037) AMANITA MUSCARIA FRUITING BODY: 200 [hp_C] in 1 mL Events, (What FDA is not aware of scientific evidence to support homeopathy as effective. Agaricus bisporus fruiting bodies were grown by infecting 200 kg of horse manure with spores for 40 days at 22°C with minimal light. Get Label RSS Feed, 1. View Labeling Archives, & M.A.Curtis (1873) Biol Pharm Bull 2001;24:820-8. This study was designed to investigate the antioxidant and anti-aging effects of D-galatose-induced (D-gal-induced) aging mice as well as monosaccharide compositions of acidic-extractable polysaccharides (AcAPS) and its major purified fractions (AcAPS-1, AcAPS-2 and AcAPS-3) from the fruiting body of Agaricus bisporus. 2. Jul 7, 2020 - Agaricus Bisporus | Fungus| Nature | Outdoors | Fungi A mushroom or toadstool is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground, on soil, or on its food source. By hyphal fusion the primary mycelium give rise to secondary mycelium. (current). Fruiting body of mushrooms has been consumed directly fresh or processed and used as delicacy. Typically, the veil tissue is weakest near the attachment to the stem, rather than to the attachment at the edge of the peridium, and the veil separates from the stem. , In deposit, such as with a spore print, the spores appear almost black, tinged with purple. , The edibility of the fruit bodies of Agaricus deserticola is not known definitively, and there are conflicting opinions in the literature, with some sources claiming that the edibility is unknown, and consumption should be avoided.
2020 name of agaricus fruiting body