• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Cortinarius subcalyptrosporus M.M. Moser

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Scientific name
Cortinarius subcalyptrosporus
M.M. Moser
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Annya Ambrose
Comments etc.
Annya Ambrose

Assessment Notes

Taxonomic notes

Cap   3—8 cm wide, persistently convex but the centre becomingdepressed,  violaceous, dry,  finely fibrillose-squamulose all over,  thescales more or less suberect.  —  Gills emarginate,  sinuate-adnate,subdistant,  L =  24-40,  1 =  7-14,  intensely and dark violaceous,almost violet-black,  from spores becoming rusty dusted,  5-14 mmwide,  slowly becoming very broad.  -  Stem 4-12 cm long, 4-11 mmthick at the apex,  6-20 mm at the subclavate base,  cortina paleviolaceous,  slightly developed,  basal mycelium pale violaceous.  -Context 4-6 mm thick in the centre of the pileus,  dry,  firm,  vio-laceous. -  Smell slight,  reminiscent of radish.Spores (9.2)-10-11.8-(14)  x 6.3-8 um,  mean 10.8 x 7.1, Q =1,53, broadly elliptic, dark yellow-brown,  fine to roughly verrucose,some spores showing a more or less distinct plage.  Basidia   4-spored,  35-40 X 8-10 (xm,  sterigmata 2-4 fxm.  -  Cheilocystidiafrequent,  large, lanceolate to bottleshaped and with ventricose basalpart,  50—80—140 X 10—25 \xm,  sometimes with amorphous excretionat the top. -  Pleurocystidia relatively scarce for the group,  broadlylanceolate or ventricose-fusoid,  or bottleshaped,  40-100   x   10-18(20)  ^im.  -  Epicuticular   hyphae   10-14 \xm thick,  with browncontent in KOH, the fascicules of hairs on the surface formed fromseptate,    10-18 |im   thick,    bluntly   ending   hyphae;    tramapseudoparenchymatous,  hyaline,  subhymenium   subcellular,  ele-ments 15-30 x 15-20 ^m;  hyphae of the stem 6-10 [im,  granulöseincrusted in KOH,  hyphae of the cortina 4-8 [xm, some with browncontent in KOH. -  Clamp connections present

Why suggested for a Global Red List Assessment?

Based on literature, the species status is unknown and the only recorded sighting was in Mt. Kinabalu, Borneo. Malaysia.

Geographic range

NORTH BORNEO: Mt. Kinabalu, 1700 m

Population and Trends

The species itself only found recorded at Mt. Kinabalu, Borneo Island of Malaysia. The only description/study was done by Meinhard Michael Moser in 1986. Apart from that, the species is relatively unknown.

Population Trend: Uncertain

Habitat and Ecology

Mount Kinabalu with an elevation of 1700 m. Habitat. - In humus, between litter.



Conservation Actions

Research needed

Use and Trade


Moser M (1986). “Cortinarius Fr. subgen. Cortinarius in the SW-Pacific area”.Sydowia. 39: 138–47.

Country occurrence

Regional Population and Trends

Country Trend Redlisted