Cortinarius purpureocapitatus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Cortinariaceae
Genus: Cortinarius
Species:
C. purpureocapitatus
Binomial name
Cortinarius purpureocapitatus
X. Yue Wang, J.A. Cooper, A.R. Nilsen & Orlovich

Cortinarius purpureocapitatus is a species of purple pouch fungus in the genus Cortinarius. It is endemic to Aotearoa New Zealand.[1][2]

Taxonomy

The species was described in 2020 by Xinyue Wang, Jerry A Cooper, Andy R Nilsen and David A Orlovich.[1] The holotype specimen was collected on the New Zealand Fungal Foray in 2016 on the Glacier Burn Track in Glenorchy, by New Zealand writer and editor Anna Chinn.[1]

Description

This species produces secotioid fruit bodies. The pileus ranges from 25 to 45 mm in diameter, can be pear-shaped to almost rounded with an incurved margin that is not attached to the stipe at maturity.  The pileus is slimy, violet to dark violet, occasionally with a reddish hue, and is not hygrophanous. The gleba is loculate, with the locules (compartments) up to 3 mm long and ellipsoid in shape. There are white to pale violet tramal plates extending almost to the edge of the pileus. The stipe continues into the pileus as a columella. The stipe is 30–90 mm long and 8–14 mm wide, centrally attached, equal to subclavate in shape, white to pale lavender in colour, with a surface that is longitudinally striate, and having a fragile attachment to the sporocarp. The stipe context is white to white with a violaceus sheen especially at the base. The tissue of the cutis and stipe do not show any reaction to the addition of potassium hydroxide.[1] Cortinarius purpureocapitatus is distinguished from the other purple secotioid species in New Zealand by the combination of having tramal plates and smooth spores.[1]

Habitat and distribution

Cortinarius purpureocapitatus occurs in forests and is found in both the North and South Island of New Zealand. It is an ectomycorrhizal fungus, associated with Nothofagus species including red beech (N. fusca), mountain beech (N. cliffortioides) and hard beech (N. truncata).[1]

Etymology

The specific epithet purpureocapitatus derives from the Latin purpureo meaning purple and capitatus meaning head or headed. This refers to the purple colour of the pileus.[1]

See also

References

  1. 1 2 3 4 5 6 7 Nilsen, Andy R.; Wang, Xin Yue; Soop, Karl; Cooper, Jerry A.; Ridley, Geoff S.; Wallace, Michael; Summerfield, Tina C.; Brown, Chris M.; Orlovich, David A. (2020-05-03). "Purple haze: Cryptic purple sequestrate Cortinarius in New Zealand". Mycologia. 112 (3): 588–605. doi:10.1080/00275514.2020.1730120. ISSN 0027-5514. PMID 32315246.
  2. ↑ "Cortinarius purpureocapitatus". iNaturalist NZ. Retrieved 2022-08-11.
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