Identificaciones de keith_seifert

On Abies twig.Triradiate conidia, arms up to 100u long, multiseptate, brown on a single conidiophore, probably blastic, the colony is scattered among two discos - a) Mollisia-like with light coloured hymenium, b) dark hymenium, clavate spores (tear drop) 17-23x3-5u, spores may eventually become 2-3 septate, hyaline; a small colony of Septonema? sp also present (conidia 2-septate, 15-18x6-7u), middle cell larger and darker than end cells. Dematiaceous Hyphomycetes , Ellis, 1971

on old Helvella next to trail.

produce two kind of conidia, the first type are Mycogone-like 1 septate, somewhat mushroom shaped, highly verrucose and measure 10-14 x 7-10 µm. the second kind of conidia are long, cylindrical 0-1 septate, smooth and measure 17-26 X 4-5µm

Stilbella-like anamorph on attached twigs of Sambucus nigra and Prunus padus. Sometimes in association with pyrenos, but not strictly.
Individual synnemata sometimes coalescing into larger orangeish formless mass. Ornamenting cells on stipe absent. Branching simple, conidiogenesis simple, apical. Conidia not exceeding 6x2um.

Found parasitizing a Helvella sp. Last photo has drawings from: Image from page 377 of "Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz" (1907) Flicker
Other examples: https://www.pilzforum.eu/board/thread/57498-spooneromyces-mit-
didymopsis/
https://www.pilzforum.eu/board/thread/31769-neottiella-albocincta-mit-vermutlich-didymopsis-helvellae/

Select measurements from specimen, not complete range.
3-septate conidia:

1. 22.5 X 10 microns,
2. 23.7 X 10

3. 22 X 10
   Conidiophores up to 300 microns long, 5-6.5 microns wide
   Found upon well decayed log. Specimen retained for submission to DAOM Ottawa.

Stilbella-like anamorph on attached twigs of Sambucus nigra and Prunus padus. Sometimes in association with pyrenos, but not strictly.
Individual synnemata sometimes coalescing into larger orangeish formless mass. Ornamenting cells on stipe absent. Branching simple, conidiogenesis simple, apical. Conidia not exceeding 6x2um.

Stilbella-like anamorph on attached twigs of Sambucus nigra and Prunus padus. Sometimes in association with pyrenos, but not strictly.
Individual synnemata sometimes coalescing into larger orangeish formless mass. Ornamenting cells on stipe absent. Branching simple, conidiogenesis simple, apical. Conidia not exceeding 6x2um.

Forming biofilm-like colonies with Cladosporium sphaerospermum (iNat 194128012) on the inner walls of an expired carton of soy milk.

Photos:

1. Colonies on Malt Extract Agar (MEA). Curvularia inaequalis is the light brown colony on the left and Cladosporium sphaerospermum is the dark one on the right.
2. Conidiophores and conidia
3. Conidiophores and conidia
4. Conidiophores and conidia
5. Conidia
6. Conidia
7. Conidia
8. Conidiophore showing pores at the conidiogenous loci

The conidia measure (25.2-)37.3-43.4 x 8.6-12.6 µm

Host: Betula nigra

Smooth diatrypous fruit body, very thin - like a single celled layer with no clear body.

No asci observed, possibly anamorphic.

Spores dyed in lactophenol cotton blue - only staining the apical segments