ethancrenson's Favorites

Strong mushroom odor, almost no flavor (certainly no bitterness).

Root-like mycelia on base, growing in garden under boxwood

Crimson then brown in KOH (see 7th photo)

Stipe hollow (see 6th photo), no visible ring

Gills sinuate with chocolate-brown spore-print (photo 13), oblong, smooth, regular, 8µm x 5µm (photos 8, 9)

Photos 10, 11, 12 are under UV light. Some green fluorescence on gills and stipe, purple fluorescence on cap

On dead elm, on the underside, thin perideum, if that's what it is. Black spore mass. Green in KOH. (10.1) 11 - 13.7 (26.5) × (3.7) 3.9 - 5.1 (6.3) µm

Q = (2.1) 2.4 - 3 (3.3) ; N = 35

Me = 12.4 × 4.6 µm ; Qe = 2.7 https://docs.google.com/spreadsheets/d/1M5Yd8pD72oPJFySdl9RvqbIkM3vQoGZmydM1PM9u708/edit?usp=sharing

Fruiting in abundance on the ground under Picea glauca - White Spruce.
Locally common and reoccurring species that fruit for several months.
Apothecia 2-4mm in diameter, yellow, sessile, margin with teeth.
Asci 8-spored, IKI+3bb, ?croziers(+), 155x13um.
Ascospores aseptate, hyaline, biguttulate, ciboroid to ellipsoid, measured
*(10.9) 11.8 - 14.9 (17) × (5.4) 5.7 - 6.3 (6.9) µm
Q = (1.8) 1.9 - 2.5 (2.7) ; N = 23
Me = 13.2 × 6.1 µm ; Qe = 2.2
Paraphyses filiform branching in the top part, septate, without VBs.

First 5 photos taken same day of collection, final 3 photos taken of rehydrated, refrigerated material approx. one week post-collection. Lower quality cell phone shot through dissecting scope eyepiece shows powerfully purple KOH rxn, which is the result of the dissolution of glandular pigments that adorn the hairs. Note curious black, appressed, pulvinate growths from which many Perrotia primordia seem to emerge. Consulted with Bjorn Wergen, who confirms that this is a known feature of the sp., especially in dry/damaged material, and particularly in populations from the US and SW Asia (Uzbekistan, Mongolia, etc.) @jackjohnsonn's observation of the same collection (https://www.inaturalist.org/observations/163424091) contains the micrographs and notes on micromorphology. same substrate as https://www.inaturalist.org/observations/163625666 - https://www.inaturalist.org/observations/163625665 - https://www.inaturalist.org/observations/163625662. ITS and micro forthcoming.

Collected during the 2023 Spring Meeting of the Pacific Northwest Key Council in Peachland, British Columbia, Canada.

found on a twig, probably Populus

conidiomata, sporodochial, erumpant, orange when dry (Picture 2), pale pinkish when fresh (Picture 4), with a darker short, stout stem. Conidiophore arising from somwhat stromatic cells of textura angularis. Conidiophore, long, often curved, hyaline, conidiogenous cells produced pleurogenously, as small strongly apically curved phialides, usually found below a conidiophore septum. Conidia, hyaline, aseptate, smooth, somewhat variable in shape and occasionally slightly sinuous, allantoid or constricted at the center. Conidia measure 5.5 - 7.5 µm x 1.8 - 2.3 µm (avg = 6.6 x 2.1).

This relatively common and distinct species here because of its coloration, large size and pleurogenous conidiogenous cells, it often grow on twigs and small branches. It also, often have a teleomorph associated with it, but it was not seen in this collection.

Nectria dematiosa is apparently similar but without a stout stem, while N. canadensis is decidedly synnematous and occur on elm.

On a small hardwood on wet ground.
Apothecia tiny, 0.2-0.33mm with bright lime-green marginal hairs.
Ascospores measure in H2O
(15.1) 15.9 - 20.7 (22.7) × (4.2) 4.4 - 4.9 (5.1) µm
Q = (3.3) 3.4 - 4.5 (5.2) ; N = 17
Me = 18.4 × 4.6 µm ; Qe = 4
Asci 8-spored, croziers(-), IKI+b.

Anamorphic fungi on decorticated hardwood (likely Populus) next to Orbilia aff. vinosa.
Conidia produced in some kind of tubes.
Conidia measure in H2O
(5.1) 5.2 - 6 (6.1) × (0.9) 0.93 - 1.2 µm
Q = (4.2) 4.8 - 5.6 (6.2) ; N = 7
Me = 5.6 × 1.1 µm ; Qe = 5.2

On bark of deciduous trees. Common at this time of the year.
Fruitbodies 1-1.6mm.
Basidiospores measure in H2O
(5.9) 6.4 - 8.6 (9.3) × (2.1) 2.12 - 2.4 (2.5) µm
Q = (2.7) 2.74 - 3.7 (4.1) ; N = 20
Me = 7.3 × 2.3 µm ; Qe = 3.2