''Osteina'' is a fungal

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

in the family Dacryobolaceae.

Taxonomy

The genus was

circumscribed In geometry, a circumscribed circle for a set of points is a circle passing through each of them. Such a circle is said to ''circumscribe'' the points or a polygon formed from them; such a polygon is said to be ''inscribed'' in the circle. * Circum ...

by mycologist

Marinus Anton Donk Marinus Anton Donk (14 August 1908 – 2 September 1972) was a Dutch mycology, mycologist. He specialized in the Taxonomy (biology), taxonomy and nomenclature of mushrooms. Rolf Singer wrote in his obituary that he was "one of the most outstandin ...

in 1966, with ''Polyporus obductus'' as the

type species In International_Code_of_Zoological_Nomenclature, 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 spe ...

Catalogue of Life The Catalogue of Life (CoL) is an online database that provides an index of known species of animals, plants, fungi, and microorganisms. It was created in 2001 as a partnership between the global Species 2000 and the American Integrated Taxono ...

lists 3 accepted species: *''

Osteina obducta ''Osteina obducta'' is a fungal species in the family Dacryobolaceae. The genus and species was circumscribed by mycologist Marinus Anton Donk in 1966, making ''Osteina obducta'' the type species. Description ''Osteina obducta'' is characterize ...

'' (Berk.) Donk *''

Osteina rhodophila ''Osteina'' is a fungal genus in the family Dacryobolaceae. Taxonomy The genus was circumscribed by mycologist Marinus Anton Donk in 1966, with ''Polyporus obductus'' as the type species. Catalogue of Life lists 3 accepted species: *'' Ostein ...

'' (Spirin & Zmitr.) Bernicchia & Gorjón *''

Osteina undosa ''Osteina'' is a fungal genus in the family Dacryobolaceae. Taxonomy The genus was circumscribed by mycologist Marinus Anton Donk in 1966, with ''Polyporus obductus'' as the type species. Catalogue of Life lists 3 accepted species: *'' Ostein ...

'' (Peck) Zmitr.

Description

''Osteina'' is characterized by

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 ...

that are sessile to stipitate, which are bone hard when dry. It has a monomitic hyphal system, containing only generative hyphae with

clamps Clamp may refer to: Tools and devices *Brick clamp, an early method of baking bricks *Clamp (tool), a device or tool used to hold objects in a fixed relative position (many types listed) **C-clamp **C-clamp (stagecraft) **Riser clamp, a device u ...

. The

spores In biology, a spore is a unit of sexual (in fungi) 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 plant ...

are

hyaline A hyaline substance is one with a glassy appearance. The word is derived from , and . Histopathology Hyaline cartilage is named after its glassy appearance on fresh gross pathology. On light microscopy of H&E stained slides, the extracellula ...

and thin-walled, and are

inamyloid 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 staini ...

and acyanophilic. ''Osteina'' causes a brown rot in

gymnosperm The gymnosperms ( ; ) are a group of woody, perennial Seed plant, seed-producing plants, typically lacking the protective outer covering which surrounds the seeds in flowering plants, that include Pinophyta, conifers, cycads, Ginkgo, and gnetoph ...

wood.

References

Fomitopsidaceae Inedible fungi Monotypic Polyporales genera Taxa named by Marinus Anton Donk Taxa described in 1966 {{Polyporales-stub