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Rhodocollybia
''Rhodocollybia'' is a genus of Basidiomycete mushroom. Species in this genus, formerly classified as a subgenus in ''Collybia'', have fairly large caps (typically larger than broad), and have a pinkish-tinted spore print. Microscopically, they are characterized by having spores and basidia that are dextrinoid—staining deep reddish to reddish-brown with Melzer's reagent when tested for amyloidity. ''Rhodocollybia'' species are commonly found in temperate North America and Europe, and infrequently in Central and South America. Taxonomy The genus name ''Rhodocollybia'' was first used by Rolf Singer in 1939 to describe those species of ''Collybia'' with a pink spore deposit; in later works he considered the genera equivalent (synonymous) and called them ''Collybia''. In 1997, Antonín and Noordeloos studied various members of ''Collybia'' using phylogenetic analysis, and reorganized the genus, dividing species into either ''Collybia'', ''Gymnopus'', or ''Rhodocollybia''. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodocollybia Butyracea
''Rhodocollybia butyracea'', common name Buttery Collybia, is a species of fungus in the mushroom family Omphalotaceae. It has a number of subspecies. Description The cap of this mushroom is 2 to 10 cm across. It is convex and becomes broadly convex or almost flat. When fresh, this species is smooth and moist. It has a reddish-brown colour fading to cinnamon. The gills are either free from the stem, or narrowly attached. They range from close to crowded and are whitish. Occasionally, they develop a pinkish tone as they age, and often form fine, jagged edges. The stem is up to 10 cm long and 1 cm thick. It is normally somewhat club-shaped. It can either be moist or dry. The flesh of this species is white. There is no distinctive odor or taste. The spores are pale yellowish, pale pinkish, or white. Ecology This species is saprobic. It decomposes litter from conifers, usually that of the genus ''Pinus'', and occasionally hardwoods. Habitat ''Rhodocollybia but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omphalotaceae
The Marasmiaceae are a family of basidiomycete fungi which have white spores. They mostly have tough stems and the capability of shrivelling up during a dry period and later recovering. The widely consumed edible fungus ''Lentinula edodes'', the shiitake mushroom, is a member of this family. According to a 2008 estimate, the family contains 54 genera and 1590 species. The family Omphalotaceae, described by A. Bresinsky in 1985 as a segregate from the Tricholomataceae, has been considered synonymous with Marasmiaceae. However DNA analyses by Moncalvo et al. in 2002 and Matheny et al. in 2006 have now led to that family being accepted by Index Fungorum and most recent references. The following genera are included in that family : ''Anthracophyllum'', ''Gymnopus'', ''Lentinula'', ''Marasmiellus'', '' Mycetinis'', '' Rhodocollybia'', ''Omphalotus''. Genera See also *List of Agaricales families References * * {{Taxonbar, from=Q544997 Marasmiaceae The Marasmiaceae a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collybia
''Collybia'' (in the strict sense) is a genus of mushrooms in the family Tricholomataceae. The genus has a widespread but rare distribution in northern temperate areas, and contains three species that grow on the decomposing remains of other mushrooms. Until recently a large number of other white-spored species, some very common, were assigned to this genus, but now the majority have been separated into other genera: ''Gymnopus'', '' Rhodocollybia'' and '' Dendrocollybia''. ''Collybia'' sensu lato ''Collybia'' sensu lato is one of the groups of fungi of the order Agaricales that has created taxonomic differences of opinion in the scientific community. The generic name ''Collybia'' is due to Elias Magnus Fries and first appeared in 1821. ''Collybia'' was originally a tribe from an Agaricus classification. In 1857, Friedrich Staude recognized ''Collybia'' as a genus. The name ''Collybia'' means "small coin". Later in his systematic work of 1838, Fries characterized ''Collybia' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnopus
''Gymnopus'' is a genus of fungus in the family Omphalotaceae. The genus has a widespread, cosmopolitan distribution and contains about 300 species. History and classification The type species for the Gymnopus, ''Gymnopus fusipes,'' dates back to 1806 Roussel.html" ;"title="Henri_François_Anne_de_Roussel.html" ;"title="Pers..html" ;"title="Pers.">Pers.) Henri François Anne de Roussel">Roussel">Henri_François_Anne_de_Roussel.html" ;"title="Pers..html" ;"title="Pers.">Pers.) Henri François Anne de Roussel">Roussel Many of the species now classified in the Gymnopus genera were once assigned to Collybia. In 1997 it was suggested that the Collybia genus be split into three genera, one of them being Gymnopus. Description In general, Gymnopus Sporocarp (fungi), fruiting bodies are found in leaf and woody litter. Typically the fruiting bodies are relatively small and range from browns to white in color. Their Spore print, spore deposit is white. Most species of gymnopus act as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amyloid (mycology)
In mycology a tissue or feature is said to be amyloid if it has a positive amyloid reaction when subjected to a crude chemical test using iodine as an ingredient of either Melzer's reagent or Lugol's solution, producing a blue to blue-black staining. The term "amyloid" is derived from the Latin ''amyloideus'' ("starch-like"). It refers to the fact that starch gives a similar reaction, also called an amyloid reaction. The test can be on microscopic features, such as spore walls or hyphal walls, or the apical apparatus or entire ascus wall of an ascus, or be a macroscopic reaction on tissue where a drop of the reagent is applied. Negative reactions, called inamyloid or nonamyloid, are for structures that remain pale yellow-brown or clear. A reaction producing a deep reddish to reddish-brown staining is either termed a dextrinoid reaction (pseudoamyloid is a synonym) or a hemiamyloid reaction. Melzer's reagent reactions Hemiamyloidity Hemiamyloidity in mycology refers to a special ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyanophilous
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Iodine
Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a semi-lustrous, non-metallic solid at standard conditions that melts to form a deep violet liquid at , and boils to a violet gas at . The element was discovered by the French chemist Bernard Courtois in 1811 and was named two years later by Joseph Louis Gay-Lussac, after the Ancient Greek 'violet-coloured'. Iodine occurs in many oxidation states, including iodide (I−), iodate (), and the various periodate anions. It is the least abundant of the stable halogens, being the sixty-first most abundant element. As the heaviest essential mineral nutrient, iodine is required for the synthesis of thyroid hormones. Iodine deficiency affects about two billion people and is the leading preventable cause of intellectual disabilities. The dominant producers of iodine today are Chile and Japan. Due to its high atomic number and ease of attachment to organic compound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaline
A hyaline substance is one with a glassy appearance. The word is derived from el, ὑάλινος, translit=hyálinos, lit=transparent, and el, ὕαλος, translit=hýalos, lit=crystal, glass, label=none. Histopathology Hyaline cartilage is named after its glassy appearance on fresh gross pathology. On light microscopy of H&E stained slides, the extracellular matrix of hyaline cartilage looks homogeneously pink, and the term "hyaline" is used to describe similarly homogeneously pink material besides the cartilage. Hyaline material is usually acellular and proteinaceous. For example, arterial hyaline is seen in aging, high blood pressure, diabetes mellitus and in association with some drugs (e.g. calcineurin inhibitors). It is bright pink with PAS staining. Ichthyology and entomology In ichthyology and entomology, ''hyaline'' denotes a colorless, transparent substance, such as unpigmented fins of fishes or clear insect wings. Resh, Vincent H. and R. T. Cardé, Eds. Encyclo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spore
In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, fungi and protozoa. Bacterial spores are not part of a sexual cycle, but are resistant structures used for survival under unfavourable conditions. Myxozoan spores release amoeboid infectious germs ("amoebulae") into their hosts for parasitic infection, but also reproduce within the hosts through the pairing of two nuclei within the plasmodium, which develops from the amoebula. In plants, spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes. Two gametes fuse to form a zygote which develops into a new s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stipe (mycology)
In mycology, a stipe () is the stem or stalk-like feature supporting the cap of a mushroom. Like all tissues of the mushroom other than the hymenium, the stipe is composed of sterile hyphal tissue. In many instances, however, the fertile hymenium extends down the stipe some distance. Fungi that have stipes are said to be stipitate. The evolutionary benefit of a stipe is generally considered to be in mediating spore dispersal. An elevated mushroom will more easily release its spores into wind currents or onto passing animals. Nevertheless, many mushrooms do not have stipes, including cup fungi, puffballs, earthstars, some polypores, jelly fungi, ergots, and smuts. It is often the case that features of the stipe are required to make a positive identification of a mushroom. Such distinguishing characters include: # the texture of the stipe (fibrous, brittle, chalky, leathery, firm, etc.) # whether it has remains of a partial veil (such as an annulus or cortina) or universal ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adnexed
In mycology, a lamella, or gill, is a papery hymenophore rib under the cap of some mushroom species, most often agarics. The gills are used by the mushrooms as a means of spore dispersal, and are important for species identification. The attachment of the gills to the stem is classified based on the shape of the gills when viewed from the side, while color, crowding and the shape of individual gills can also be important features. Additionally, gills can have distinctive microscopic or macroscopic features. For instance, ''Lactarius'' species typically seep latex from their gills. It was originally believed that all gilled fungi were Agaricales, but as fungi were studied in more detail, some gilled species were demonstrated not to be. It is now clear that this is a case of convergent evolution (i.e. gill-like structures evolved separately) rather than being an anatomic feature that evolved only once. The apparent reason that various basidiomycetes have evolved gills is that it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamella (mycology)
In mycology, a lamella, or gill, is a papery hymenophore rib under the cap of some mushroom species, most often agarics. The gills are used by the mushrooms as a means of spore dispersal, and are important for species identification. The attachment of the gills to the stem is classified based on the shape of the gills when viewed from the side, while color, crowding and the shape of individual gills can also be important features. Additionally, gills can have distinctive microscopic or macroscopic features. For instance, ''Lactarius'' species typically seep latex from their gills. It was originally believed that all gilled fungi were Agaricales, but as fungi were studied in more detail, some gilled species were demonstrated not to be. It is now clear that this is a case of convergent evolution (i.e. gill-like structures evolved separately) rather than being an anatomic feature that evolved only once. The apparent reason that various basidiomycetes have evolved gills is that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
