Observation 15304: Psilocybe cyanofibrillosa Guzmán & Stamets

Notes:
Ganymede collection.

Spores are 9.25 – 10.5 (10.75) x 4.5 – 5.5. (Alan’s measurements)

Or (8.83) 9.80-10.3-10.64 (12.17) x (4.55) 5.02-5.2-5.53 (5.89) (Jan’s measurements).

DNA sequence shows it’s close to P. pelliculosa.

Species Lists

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Cheilocystidia from the original species description.
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Habitat.

Proposed Names

90% (2)
Recognized by sight: Forms cespitose clusters, cap conic to plane, on wood chips.
Used references: The Genus Psilocybe by Guzman
Based on microscopic features: Spores are 9 – 11 (12) x 4.5 – 5.5, subellipsoid.
Cheilocystidia very abundant, most narrowly lageniform with a long neck, sometimes bifurcate 19.0-25.4 microns, neck 1 – 2 microns wide.
Pleurocystidia absent.
Based on chemical features: Staining blue where damaged.

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= Observer’s choice
= Current consensus

Comments

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Microcharacters
By: Jan Borovicka (bore)
2013-01-12 09:54:49 PST (-0800)

The spores are somewhat narrower than those reported for P. cyanofibrillosa by Guzmán (1983). Anyway, other characters agree with the accepted concept.

Spore size: (8.83) 9.80-10.3-10.64 (12.17) x (4.55) 5.02-5.2-5.53 (5.89) um.

Created: 2008-12-12 21:53:09 PST (-0800)
Last modified: 2018-01-31 03:40:22 PST (-0800)
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