Jelly-like synnemata growing on the underside of a Prunus serotina stick with an Arachnopeziza species, Tulasnella violea and Xenasmatella vaga. Synnemata composed of simple-septate conidiophores. Synnemata measurements: 0.2 × 0.1 – 0.07 (0.1) mm, Q = 3 – 3.7; N = 3, Me = 0.2 × 0.1 mm; Qe = 3.3. Conidia hyaline, smooth, hemi-circinate and 3-septate. Conidia measurements: (7.8) 9.1 – 11 (11.2) × (6.8) 7.1 – 7.8 (8) µm, Q = (1) 1.2 – 1.5; N = 30, Me = 10 × 7.5 µm; Qe = 1.3

On a rotten hardwood log tiny white tooth fungi.
Basidiospores hyaline, ellipsoid, measured
(4.7) 4.8 - 5.5 (6) × (3.1) 3.11 - 3.5 (3.8) µm
Q = (1.5) 1.54 - 1.6 (1.7) ; N = 6
Me = 5.2 × 3.3 µm ; Qe = 1.6
KOH negative.

Cyphelloid on underside of Betula log. Hairs are brown.
Spores hyaline, ellipsoid, measured
*(5.8) 5.85 - 6.8 (7.8) × (3.7) 3.8 - 4.46 (4.5) µm
Q = (1.4) 1.5 - 1.7 ; N = 8
Me = 6.4 × 4 µm ; Qe = 1.6

Récolte: 26 avril 2024
Habitat: sur bois pourri et Xylariaceae.
Saint-Jean-sur-Richelieu
DC0091

Conidies brunes ellipsoïdes, plus pâle aux extrémités, 3 septa, non constricte ou légèrement au septa médian, 20,5-24,1 x 8,8-11,6um

Conidiophores bruns, plus pâle vers l'apex, septés, 4,7-4,9um de largeur.

Document consulté:

Réblová, M. & Siefert, K. A., 2004, Cryptadelphia (Trichosphaeriales), a New Genus for Holomorphs with Brachysporium Anamorphs and Clarification of the Taxonomic Status of Wallrothiella

CG2660.
16 octobre 2023.
Près d'une souche de feuillu, Ripon, Outaouais.
Chapeau 7,5 cm diam. jaune, visqueux, avec squamules brun roux, à marge incurvée.
Lames jaune pâles, adnées, sinuées, serrées, avec lamellules. Arêtes érodées.
Pied 10 cm longueur x 1.5 cm largeur, devenant creux, avec rhyzomorphes.
Odeur terreuse, saveur douce, fongique.
Sporée brun roux.

Small black perithecia on decorticated wood near a stream.
Asci 8-spored, unitunicate.
Ascospores fusiform, multiguttulate, with 3 septa, measured
*(22.6) 22.9 - 25.4 (27.3) × (6.8) 7.2 - 7.7 (7.9) µm
Q = (3) 3.1 - 3.5 (3.7) ; N = 24
Me = 24.4 × 7.5 µm ; Qe = 3.3

Growing on petioles of dead Matteucia strutiopteris leaves on both dormant and leafy plants. Co-occuring on some plants with a white corticioid (DG2108083). Locally abundant. Yellowish-brown with lighter margins. Pendulous and growing in clusters. Basidiocarps 1.0 to 2.5 mm long and 0.5 to 1.1 mm wide. Context white. Odor not distinctive. All structures inamyloid. Clamps present. Hairs yellowish, smooth and thick-walled. Basidia 2-sterigmate to 4-sterigmate. Spores smooth, hyaline and thin-walled. Spore measurements: (8.7) 9.2 – 11.7 (12.9) × (3.2) 3.5 – 3.9 (4.3) µm, Q = (2.2) 2.4 – 3.3 (3.7); N = 30, Me = 10.5 × 3.7 µm; Qe = 2.9.

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Image #4: Habitat

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Originally posted to Mushroom Observer on Aug. 17, 2021.