Hydnellum concrescens

Hydnellum concrescens is an inedible fungus, commonly known as the zoned hydnellum or zoned tooth fungus. As with other tooth fungi, the spores are produced on spines on the underside of the cap, rather than gills. It has a funnel-shaped cap, typically between 2 and 7 cm (0.8–2.8 in) in diameter, which has characteristic concentric zones of color. The cap may also have radial ridges extending from the center to the margins. The spines are pink in young specimens, but turn brown with age.

Hydnellum concrescens
Zoned tooth fungus
Scientific classification
Kingdom:
Fungi
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Thelephorales
Family:
Bankeraceae
Genus:
Hydnellum
Species:
H. concrescens
Binomial name
Hydnellum concrescens
(Pers.) Banker (1906)
Synonyms

Hydnum concrescens Pers. (1796)

This species is very similar in appearance to Hydnellum scrobiculatum, and traditionally, largely unreliable microscopic characteristics such as spore size and ornamentation have been used to distinguish between the two. Recent research has demonstrated a way to discriminate the two species using DNA sequencing of the ITS regions.[1]

References
  1. Parfitt D, Martyn Ainsworth A, Simpson D, Rogers HJ, Boddy L (2007). "Molecular and morphological discrimination of stipitate hydnoids in the genera Hydnellum and Phellodon". Mycological Research. 111 (Pt 7): 761–77. doi:10.1016/j.mycres.2007.05.003. PMID 17681224.


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