Calostoma cinnabarinum
Calostoma cinnabarinum | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Fungi |
Division: | Basidiomycota |
Class: | Agaricomycetes |
Order: | Boletales |
Family: | Sclerodermataceae |
Genus: | Calostoma |
Species: | C. cinnabarinum
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Binomial name | |
Calostoma cinnabarinum | |
Synonyms | |
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Calostoma cinnabarinum | |
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Glebal hymenium | |
Stipe is bare | |
Spore print is yellow to buff | |
Ecology is mycorrhizal | |
Edibility is inedible |
Calostoma cinnabarinum, commonly known as the stalked puffball-in-aspic, gelatinous stalked-puffball, or red slimy-stalked puffball,
Despite its appearance and common name, C. cinnabarinum is not related to the true
Taxonomy and phylogeny
Calostoma cinnabarinum has a long taxonomic history. Leonard Plukenet illustrated a "dusty fungus from Virginia, an elegant twisted work with a coral-red stipe"[Note 1] in his 1692 Phytographia[3] that was later recognized as this species.[4] In 1809, Christiaan Persoon provided the first modern scientific description, as Scleroderma callostoma, and suggested that the species might be distinctive enough to warrant the creation of a new genus.[5] Later that year, Nicaise Desvaux did just that, creating the genus Calostoma.[6] To avoid a tautonymous name, he renamed the type species C. cinnabarinum.[1]
In 1811, Louis Bosc did not mention the earlier works when describing it as Lycoperdon heterogeneum, although he also suggested it should be placed in its own genus.[7] Jean Poiret transferred Persoon's S. callostoma to Lycoperdon in 1817, while including Bosc's L. heterogeneum separately.[8] In the same year, Nees von Esenbeck noted Bosc's belief that the species deserved its own genus and created Mitremyces, without referencing Desvaux's prior assignment to Calostoma.[9] An 1825 paper by Edward Hitchcock referred to the species with the entirely novel binomial name Gyropodium coccineum; although Hitchcock claimed this name was established by Lewis Schweinitz, he admitted that no such description had been previously published,[10] and the name and its claimed origin are considered doubtful.[11]
Schweinitz assigned Bosc's Lycoperdon heterogeneum to Mitremyces under the name M. lutescens in 1822.[12] He revisited the genus a decade later, describing M. cinnabarinum as a novel species,[13] but incomplete descriptions and mislabelled specimens caused confusion.[14] August Corda separated them more clearly, providing new descriptions, and assigning cinnabarinum to Calostoma based on the descriptions of Desvaux and Persoon, while maintaining lutescens in Mitremyces.[15] George Massee's 1888 monograph of Calostoma discounted the distinction entirely, arguing that Schweinitz's two species were actually the same species at different stages of development.[16] In 1897, Charles Edward Burnap published a new description of C. lutescens, making a clear division between the two similar species[14] that has not been substantially revised since. References to this species as "C. cinnabarina" are common but incorrect.[17]
The specific epithet cinnabarinum is derived from the Ancient Greek word kinnábari (κιννάβαρι), and refers to its "cinnabar-red"[18] color, like that of dragon's blood.[19] Its names in the English vernacular include "stalked puffball-in-aspic",[17][20][21] "red slimy-stalked puffball",[22] "aspic puffball",[23] "gelatinous-stalked puffball",[18][24] and "hot lips".[18] In central Mexico, it is known as "orchid fungus" in both Spanish (hongo orquídea) and Nahuatl (huang noono).[25]
Phylogenetics
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phylogeny and relationships of Calostoma cinnabarinum within Sclerodermatineae[26]
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The relationships and evolutionary origins of Calostoma were a matter of considerable historical debate. Based on various
Calostoma cinnabarinum's physical dissimilarity to many other species in Boletales corresponds to a higher rate of genetic drift than average for the order.[24] This trait is shared with other members of the Sclerodermatineae, which as a group have undergone more rapid evolutionary change than the order as a whole.[29]
Chemotaxonomy
The assignment of Calostoma to the Boletales placed it in an order whose
Gertraud Gruber and Wolfgang Steglich were not able to detect these compounds in C. cinnabarinum, but isolated a novel polyene pigment. This compound, named calostomal, is responsible for the orange-red color of the fruit bodies. The methyl ester of calostomal was subjected to NMR spectroscopy and was identified as all-trans-16-oxohexadeca-2,4,6,8,10,12,14-heptaenoic acid.[20] Chemically related pigments, the boletocrocins, had been isolated from the brightly colored Boletus laetissimus and B. rufoaureus.[33] It is not yet clear if the results of this chemotaxonomic investigation will mandate changes to Boletales cladistics.[20]Description
The appearance of the fruit bodies has been compared to amphibian eggs
The head is up to 2 cm (0.8 in) in diameter and typically nearly round,[17][36] although in some populations, it is visibly oval and may be slightly smaller[37] or larger.[38] The internal structure of the head is complex, sometimes described as an exoperidium and endoperidium that each possess sublayers,[22] and sometimes as distinct layers.[14] The outermost is a yellowish, translucent coating of jelly-like material 4 to 9 millimetres (0.2 to 0.4 in) thick,[38] somewhat similar to a gelatinous universal veil.[14][22] Below this coating is a thin, cinnabar-red membrane.[22][38] As the mushroom ages, these outer layers break down and fall away from the head. Pieces of the red membrane become embedded in the remaining gelatinous material, giving them the appearance of small red seeds.[36][37] This process reveals the endoperidium, a tough, non-gelatinous layer that does not break apart. When first revealed, it has a powdery, bright red surface that weathers to orange or pale yellow as the powder wears away.[22][38] Bright red apical ridges or rays form a peristome. North American specimens typically have four to five such ridges,[22][37] but Asian populations have been described with as many as seven.[38] Contained inside the endoperidium is the gleba, or spore mass, which is white when young but buff or yellow in older specimens.[17]
Like the head, the
Microscopic features
When viewed in mass, as in a
Similar species
At least in North America, Calostoma cinnabarinum is distinctive and easily recognizable.[17] Two other species of Calostoma also occur in the eastern United States. C. lutescens has a thinner gelatinous layer and a predominately yellow middle layer, or mesoperidium, with the red color confined to the peristome.[11] It also possesses a well-defined collar at the base of the spore case,[18] a longer stipe, and globose, pitted spores.[17] C. ravenelii is not gelatinous, but instead has warts adorning the spore case,[11] and is smaller than C. cinnabarinum.[18] It also has a reddish peristome but is otherwise clay-colored.[41] Unlike C. lutescens, the spores of C. ravenelii cannot be distinguished from those of C. cinnabarinum except through the use of atomic force microscopy.[40]
More representatives of the genus are present in Asia. At least nine species have been recorded from mainland India, some of which also overlap C. cinnabarinum's range in Indonesia, Taiwan, or Japan.[42] Many of these species can be readily distinguished by macroscopic features. C. japonicum is pinkish orange and lacks a gelatinous outer layer,[38] while both C. jiangii[43] and C. junghuhnii[39] are brown. However, others require microscopic features of spore shape and ornamentation for identification. Unlike the uniformly elongated spores of C. cinnabarinum, C. guizhouense possesses both elliptical and globose spores.[43] C. pengii differs primarily in the pattern of ornamentation on its spore surface.[44]
Distribution, habitat, and ecology
Widely
Calostoma cinnabarinum was thought to be
In addition to its required association with oaks, C. cinnabarinum appears to be restricted to wetter forests.[61] Early descriptions of its habitat found it in "rather moist situations"[14] and in "damp woods",[62] and David Arora has more recently described its preference for the humid forests of the southern Appalachians.[22] In contrast, it has not been detected in the dry oak forests of California[63][64] and is likely also absent from the dry tropical forests of western Costa Rica.[61] In Brazil it has been observed in the sandy soil and drier conditions of the Caatinga and cerrado, although only after periods of heavy rainfall.[53] Its outer layer may provide protection from desiccation.[65] Fruit bodies are most common in the late summer and fall,[22][36] although spring occurrences are known.[18]
Squirrels have been known to feed on C. cinnabarinum,[66] although its gelatinous coating deters insect predation.[40][41]
Uses
As with all members of its genus, C. cinnabarinum is generally considered inedible by field guides.
Notes
- ^ In Latin: Fungus pulverulentus virginianus caudice coralline topiario opere contorto
References
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- ^ Persoon CH. (1809). "Mémoire sur les vesse-loups ou Lycoperdon". Journal de Botanique (in French). 2: 5–31.
- ^ Desvaux NA. (1809). "Observations sur quelques genres à établir dans la famille des champignons". Journal de Botanique (in French and Latin). 2: 88–105.
- ^ Bosc LAG. (1811). "Mémoire sur quelques espèces de champignons des parties méridionales de l'Amérique septentrionale". Magazin der Gesellschaft Naturforschender Freunde zu Berlin für die Neuesten Entdeckungen in der Gesammten Naturkunde (in French). 5: 83–89.
- ^ Poiret JLM. (1817). "Vesse-Loup à bouche élégante". Encyclopédie Méthodique: Botanique Supplément (in French). 5: 476.
- ^ Nees von Esenbeck CDG. (1817). Das System der Pilze und Schwämme (in German). Würzburg, Germany: In der Stahelschen buchhandlung. pl. 129.
- ^ Hitchcock E. (1825). "Physiology of the Gyropodium coccineum". American Journal of Science and Arts. 9: 56–60.
- ^ a b c d e f Coker WC, Couch J (1928). The Gasteromycetes of the Eastern United States and Canada. Chapel Hill, North Carolina: University of North Carolina Press. pp. 188–193.
- ^ Schweinitz LD de. (1822). "Synopsis fungorum Carolinae Superioris". Schriften der Naturforschenden Gesellschaft zu Leipzig (in Latin). 1: 60–61.
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- ^ Corda AKJ. (1842). Anleitung Zum Studium Der Mycologie: Nebst Kritischer Beschreibung Aller Bekannten Gattungen, Und Einer Kurzen Geschichte Der Systematik (in German and Latin). Prague: Friedrich Ehrlich. pp. 97, 102.
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- ^ Li LJ, Liu B, Liu YH (1984). "Two new species of the genus Calostoma from China". Acta Mycologica Sinica (in Chinese). 3 (2): 92–95.
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External links
- Media related to Calostoma cinnabarinum at Wikimedia Commons
- Data related to Calostoma cinnabarinum at Wikispecies