Notes:
Growing on a well-rotted fallen Tsuga canadensis. Clamp connections present in the pileipellis hyphae. Basidia 4-spored. Pleurocystidia horned, none bifurcated. Cheilocystidia clavata and much shorter than measurements given for P. primus in the above source (measurements for this were very rough and inaccurate since I could not find the bases of the cheilocystidia in most of the images). Spore measurements from Piximetre: (6.3) 6.4 – 7.2 (8.6) × (4.5) 4.8 – 5.47 (5.5) µm, Q = 1.3 – 1.5 (1.6) ; N = 10, Me = 7 × 5 µm ; Qe = 1.4.

Individual spores measured: 6.89 × 4.93 µm, 7.02 × 5.53 µm, 8.64 × 5.47 µm, 7.16 × 5.14 µm, 6.82 × 4.85 µm, 7.10 × 4.78 µm, 6.32 × 4.84 µm, 6.98 × 5.19 µm, 6.44 × 5.00 µm, 6.48 × 4.51 µm

The spore lengths were smaller than those given for P. methvenii and P. hibbettii but the Q was well within the range for P. methvenii.

All micro photos taken in a mix of phloxine (1 drop), congo red (1 drop) and ammonium hydroxide (2 drops).

Species Lists

Images

20171021_110951 crop.jpg
20171021_110956.jpg
DSC_7960.JPG
DSC_7962.JPG
DSC_8058.JPG
Pleurocystidium
DSC_8043.JPG
Pleurocystidium
DSC_8063.JPG
Cheilocystidia
DSC_8059.JPG
Spores
DSC_8042.JPG
Pileipellis
DSC_8041.JPG
Pileipellis
DSC_8052.JPG
Basidia

Proposed Names

29% (1)
Used references: Justo, A., Malysheva, E., Bulyonkova, T., Vellinga, E. C., Cobian, G., Nguyen, N., … & Hibbett, D. S. (2014). Molecular phylogeny and phylogeography of Holarctic species of Pluteus section Pluteus (Agaricales: Pluteaceae), with description of twelve new species. Phytotaxa, 180(1), 1-85.
Based on microscopic features: Clamps in pileipellis, horned pleurocystidia, short and clavate cheilocystidia, spore Q

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus

Comments

Add Comment
No one has commented yet.

Created: 2017-10-30 01:52:32 CDT (-0400)
Last modified: 2017-11-07 16:46:20 CST (-0500)
Viewed: 47 times, last viewed: 2019-06-12 08:10:45 CDT (-0400)
Show Log