''Nidularia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of nine species of

fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Agaricaceae. Their

fruit bodies The sporocarp (also known as fruiting body, fruit body or fruitbody) of fungi is a multicellular structure on which spore-producing structures, such as basidia or asci, are borne. The fruitbody is part of the sexual phase of a fungal life cyc ...

resemble tiny egg-filled bird nests. The name comes from the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

meaning ''nest''. The related genus '' Mycocalia'' was segregated from ''Nidularia'' in 1961 based on differences in the microscopic structure of the peridium.

Taxonomy

The name ''Nidularia'' first appeared in the scientific literature in 1790 when Pierre Bulliard published ''N. vernicosa'' and ''N. laevis''. This name, however, was not validly published, as it predated the starting point for naming of gasteroid fungi (1801), and it lacked a generic description. Jean Bulliard gave a generic description in 1791 when he added ''N. striata''. ''N. striata'' and ''N. vernicosa'' are now placed in ''

Cyathus ''Cyathus'' is a genus of fungi in the Nidulariaceae, a family collectively known as the bird's nest fungi. They are given this name since they resemble tiny bird's nests filled with "eggs", structures large enough to have been mistaken in ...

'', while ''N. laevis'' is in '' Crucibulum''. Bulliard's concept of ''Nidularia'' is

synonymous A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

with ''Cyathus''. ''Nidularia'' was again

circumscribed In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius. Not every polyg ...

in 1817 by Swedish mycologist

Elias Magnus Fries Elias Magnus Fries (15 August 1794 – 8 February 1878) was a Swedish mycologist and botanist. Career Fries was born at Femsjö (Hylte Municipality), Småland, the son of the pastor there. He attended school in Växjö. He acquired ...

and his student Johann Nordholm. ''N. radicata'', ''N. confluens'', ''N. deformis'', and ''N. denudata''. ''Nidularia farcta'' was given as the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

; today both this taxon as well as ''N. radicata'' are thought to be synonymous with '' Nidularia deformis''. ''N. denudata'' is now the type species of a related genus, '' Mycocalia''. ''Granularia'', a genus erected by

Albrecht Wilhelm Roth Albrecht Wilhelm Roth (6 January 1757 – 16 October 1834) was a physician and botanist born in Dötlingen, Germany. He studied medicine at the Universities of Halle and Erlangen, where he received his doctorate in 1778. After graduation, he pra ...

in 1791 to contain ''Granularia pisiformis'' (now ''Nidularia deformis''), is synonymous with ''Nidularia''. In 1961, J.T. Palmer separated ''Nidularia'' section ''Sorosia'' as a distinct genus, '' Mycocalia'', combining ''Nidularia denudata'', ''N. castanea'', ''N. fusispora'', and ''N. reticulata'', and adding the new species '' Mycocalia minutissima''. In these species, the peridium comprises

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 ...

, branched, septate hyphae with clamp connections. In contrast, the peridium of ''Nidularia'' have tinted, rigid, spiny, aseptate hyphae that continue into long threads. The peridium of ''Mycocalia'' species is thin, white and short-lasting, while in ''Nidularia'' it is somewhat darker in color and more robust. Formerly classified in the family Nidulariaceae, along with other bird's nest fungi genera (''

'', '' Crucibulum'', ''

Nidula ''Nidula'' is a genus of fungi in the family Agaricaceae. Their fruit bodies resemble tiny egg-filled birds' nests, from which they derive their common name "bird's nest fungi". Originally described in 1902, the genus differs from the related gen ...

'', and ''Mycocalia''),

molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

analysis has shown that these fungi belong in the family Agaricaceae.

Species

, Index Fungorum accepts nine species in the genus ''Nidularia'': *'' Nidularia bonaerensis'' Speg. 1880 *'' Nidularia campoi'' Speg. 1921 – South America *'' Nidularia castanea'' (Ellis & Everh. ex V.S.White) Sacc. & D.Sacc. 1905 *'' Nidularia deformis'' (Willd.) Fr. 1817 *'' Nidularia griseolazulina'' Lindsey & Gilb. 1975 – United States *''

Nidularia heribaudii ''Nidularia'' is a genus of nine species of fungi in the family Agaricaceae. Their fruit bodies resemble tiny egg-filled bird nests. The name comes from the Latin meaning ''nest''. The related genus '' Mycocalia'' was segregated from ''Nidular ...

'' Har. & Pat. 1904 *'' Nidularia heterospora'' Sosin 1960 *'' Nidularia microspora'' Velen. 1939 *'' Nidularia pulvinata'' (Schwein.) Fr. 1823

Description

Fruit bodies of species in this genus grow together in large groups, and have dimensions that are typically 0.5–6 mm in diameter by 0.5–3 mm tall. They may be somewhat irregular in shape, or have a well-formed cup that is thin and fragile. The peridium has a

tomentose Trichomes (); ) are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. A covering of any kind of hair on a plant ...

surface composed of irregular, spiny

hypha A hypha (; ) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium. Structure A hypha consists of one or ...

e over a more compact wall that later breaks down to expose may brown peridioles within. Unlike other bird's-nest genera formerly classified in the family Nidulariaceae, the peridioles of the ''Nidularia'' are not connected to the fruit body by a funicular cord, but rather lay clumped together in a gelatinous matrix. There may be over 100 peridioles embedded in the matrix. In ''Nidularia pulvinata'', they have an average size of 1.1 mm diameter by 0.5 mm thickness, with an average mass of 0.2 grams. This species has an estimated 7 million spores per peridiole.

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, f ...

s are roughly elliptical in shape,

, and usually with dimensions of 5–10.5 by 4–5.5

µm The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Unit ...

. '' Nidularia griseolazulina'', however, has larger spores than typical, measuring 14–18 by 10–14 µm.

Habitat and distribution

''Nidularia'' species are saprophytic, and grow on rotting wood. The thin, fragile peridium is ruptured by falling raindrops, after which the impact of additional raindrops spreads the internal matrix and dislodges the peridioles within. The splash mechanism of ''Nidularia pulvinata'' discharges peridioles horizontally at speeds ranging from 0.3 to 3.0 meters per second, with ejection distances averaging .

References

{{Taxonbar, from=Q1316092 Agaricaceae Agaricales genera

Taxonomy

Species

Description

Habitat and distribution

See also

References