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Emerging from large decaying hardwood log in the bottom of low moist woodland draw dominated by paw paw trees. Locally abundant on log and absent on nearby logs. Specimens appear to be parasitizing Ophiocordyceps variabilis and/or directly competing for its larval host.

Reference for the creation of new genera (Niveomyces and Torrubiellomyces) that parasitize Cordyceps and Ophiocordyceps - https://doi.org/10.3767/persoonia.2022.49.05

Similar observation - https://www.inaturalist.org/observations/20957798

Sister observation for the Ophiocordyceps variabilis - http://www.inaturalist.org/observations/170023277

On Populus grandidentata - Bigtooth Aspen and Acer saccharum - Sugar Maple last year leaves small black spots.
Ascoma 2mm.
Asci 8-spored.
Ascospores hyaline, multiguttulate, aseptate, with gelatinous sheath, measured
*(34.2) 36.3 - 39.6 (40.8) × (3.5) 3.8 - 4.2 (4.4) µm
Q = (8.6) 8.8 - 10 (11.2) ; N = 15
Me = 37.6 × 4 µm ; Qe = 9.3
Microscopy is from the specimen from Populus, but microscopy of the specimen from Acer was also tested and the spores were the same size.

On a broken branch under Sugar Maple - Acer saccharum erumpent cup fungi. Yellow after rehydration and up to 6mm in diameter.
Asci 8-spored.
Ascospores measured
(4.6) 5 - 6 × (1.9) 2 - 2.3 (2.4) µm
Q = (2.1) 2.2 - 2.9 (3) ; N = 14
Me = 5.5 × 2.1 µm ; Qe = 2.6

Anamorph erumpent fungi on Spruce needles (probably on Red Spruce - Picea ?rubens).
Conidia are hyaline, aseptate, 4-nucleate, measured
(26.8) 28 - 31.7 (33.4) × (4.1) 4.4 - 5.1 (5.3) µm
Q = (5.2) 5.8 - 7.1 (7.5) ; N = 25
Me = 29.8 × 4.6 µm ; Qe = 6.4

Erumpent inoperculate cup fungi on a loose bark from what I believe was Acer.
Next to Propolis farinosa and Patellaria atrata.
8-spored asci, IKI+b.
Dictyospores hyaline, measure in H2O
(24.7) 26.6 - 31.9 (35.3) × (8.5) 9.3 - 11.6 (12) µm
Q = (2.3) 2.5 - 3.4 (3.6) ; N = 22
Me = 29.6 × 10.2 µm ; Qe = 2.9

On the inside of Elm (Ulmus) bark on the tree that was killed by Dutch Elm Disease.
Tiny, white apothecia next to Orbilia pilifera.
8-spored asci, IKI-.
Ascospores measure in H2O
(6.2) 6.7 - 8.7 (9.2) × (1.5) 1.7 - 2.1 (2.2) µm
Q = (2.8) 3.4 - 4.7 (6) ; N = 23
Me = 7.7 × 1.9 µm ; Qe = 4.2

On incubated porcupine dung. First I saw it without incubation, but I couldn't find asci. After incubation, the fresh fungus has grown, so I was able to see asci with ascospores.
Perithecia superficial, globose with long hairs around 0.5mm.
Asci 8-spored, IKI-.
Ascospores brown, 2-celled with germ pore at both ends, measure
(9.5) 10.1 - 10.9 (11.2) × (3.4) 3.5 - 3.9 (4.1) µm
Q = (2.5) 2.6 - 3.05 (3.1) ; N = 15
Me = 10.5 × 3.7 µm ; Qe = 2.8

On the last year oak -Quercus rubra leaves, small, about 1mm, black, split like cup fungi. Fruitbodies are all within a pale area of the leaf.
Together with Incrucipulum ciliare (tiny white dots) on same leaves.

Looks like Lophodermium species with split like apothecia.

Asci IKI-, 8-spored.
Ascospores fusiform, multiguttulate., aseptate, measured
*(20.5) 20.55 - 27 (28.8) × 2.8 - 3.4 (3.7) µm
Q = (5.6) 6.4 - 8.8 (9.4) ; N = 20
Me = 24.3 × 3.2 µm ; Qe = 7.8
Paraphyses filiform, some have enlarge apex.
Not uncommon in the area.

In abundance on the last year Red Oak - Quercus rubra leaves.
Asci 8-spored.
Ascospores measured in H2O
*(52.6) 53 - 66.3 (67) × (2.7) 2.8 - 3 (3.4) µm
Q = 17.5 - 23.1 (23.4) ; N = 9
Me = 59.3 × 2.9 µm ; Qe = 20.3
Paraphyses with multiguttulate VBs.

Often together with Incrucipulum ciliare.

Small purplish cup fungi on the wet ground in the broadleaf forest (under Populus) with Pulvinula and Tomentella next to it. I observed 4 cups scattered between grass. The largest apothecium was 10mm in diameter.
Asci operculate, 8-spored, IKI+, ?croziers(+).
Ascospores ellipsoid, multiguttulate, verrucose with isolated round warts, measured
*(17.3) 17.7 - 19.8 (21.3) × (9.3) 9.5 - 10.8 (11.1) µm
Q = (1.6) 1.7 - 2 (2.2) ; N = 18
Me = 18.6 × 10.1 µm ; Qe = 1.9
Paraphyses cylindrical, slightly enlarge at the apex to 7-8um.

Hyphomycete on decorticated hardwood log with many other fungies (Helicogloea compressa, Sarcomyxa serotina, Calycina, Ascocoryne cylichnium, Orbilia xanthostigma, Mollisia, Calyptosphaeria collapsa...).
Conidia hyaline, needle-shaped, mostly with 3-septa.

On Phragmites australis.
Mollisia aurantioviolascens Gminder.
Apothecia orange, sessile.
Asci 8-spored. Ascospores subfusiform, eguttulate.
Paraphyses cylindrical, with long orange VBs.
Ectal excipulum brown with textura globulosa.

I reported this species from this location and this host 2 years ago.

On old Paeonia stems. Apothecia hysterioid 1-2mm in length.
Asci 8-spored, IKI-, 86-102x9-9.6um
Ascospores fusiform, multiguttulate, aseptate or with 1-septum, hyaline, measured
*(26.7) 27.6 - 31.6 (31.8) × (2.9) 3.2 - 3.57 (3.6) µm
Q = 8.3 - 9.1 (9.2) ; N = 10
Me = 29.5 × 3.3 µm ; Qe = 8.9
Paraphyses filiform.

On cedar small cup fungi. Apothecia white, 0.3-0.6mm in diameter with a short stipe.
Marginal hairs with crooks.
Asci 8-spored, IKI+bb Calycina type.
Ascospores hyaline, pyriform, measured
*(6.2) 6.5 - 8.1 (9.2) × (1.8) 2 - 2.4 (2.5) µm
Q = (2.9) 3 - 3.7 (3.9) ; N = 15
Me = 7.4 × 2.2 µm ; Qe = 3.3

With two hyphomycete on the same leaf.

On a leaf petiole from Juglans nigra small cup fungi.
Asci 8-spored, IKI+bb Calycina type.
Ascospores hyaline, fusiform, OCI=0, measured
*(6.6) 7.5 - 9 (9.7) × (1.6) 1.9 - 2.3 (2.4) µm
Q = (3.3) 3.6 - 4.4 (4.8) ; N = 15
Me = 8.2 × 2.1 µm ; Qe = 4
Ectal excipulum thick walled.

Clusters of white conidia on cedar leaf in a wet spot. Aquatic species.
Conidia mass is white.
Helicoconidia (helicoid) hyaline, measured
*(28.5) 28.51 - 32.7 × 16.2 - 20 µm
Q = (1.5) 1.54 - 1.76 (1.8) ; N = 5
Me = 30.3 × 18.5 µm ; Qe = 1.6
Filament diameter (2) 2.5 - 3.2 (3.3) µm;
Number of coils 6-9;
Direction of coil counter-clockwise.

Growing from log covered in a layer of green moss on side of trail in secondary forest. Growing among the moss. Consistently excentric, almost lateral stipe. Two prong basidia.

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Originally posted to Mushroom Observer on Jun. 19, 2019.

Growing on wood. Spores seemed to be connected to hyphae and variable in size (about 5-10um long). Maybe an anamorph. Found 3, a young specimen was white, presumably before the spores matured and turned yellow

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Originally posted to Mushroom Observer on Feb. 2, 2020.

Appear to be growing from reddish rootlets of nearby trees (Guarea guidonia?). Anamorph present as stromata with pointed, non-clavate apex (or just immature teleomorphs?). Stipe is usually half buried and filimentous. They are fragile where very thin and thus difficult to dig up intact in order to identify the substrate. Mature perithecia not yet formed. See observation 370102 for mature spores and species list ‘Unidentified Neotropical Fungus 16 (Long Caespitose Xylarioid) (867)’ (sent:alan 10/7)

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Originally posted to Mushroom Observer on Sep. 26, 2021.

Sporocarp filled with macroscopic, sand-like chlamydospores, visible when sectioned or when rubbed between the fingers to remove the yellow coating (composed of pigmented hyphae and microscopic zygospores). This structure is similar to other gasteroid Endogonales found under Coccoloba (observation 496875, observation 504118). Bright yellow fluorescent.

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Image #3: in 365nm blacklight, chlamydospores visible in section
Image #4: 40x H20 chlamydospores
Image #5: 400x hyphae and collapsed zygospores in KOH

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Originally posted to Mushroom Observer on Dec. 6, 2022.

Kingdom Fungi. Large pumpkin like growth on and weighing down a culm of Sinarundinaria falcata bamboo. Firm, with a little give.Cut open a wedge a few days after this photograph, and it was fleshy inside. Firm fleshy like a pineapple. Smelled of ink inside. No idea of genus or species.

Mushroom Stromata growing on live montane bamboo culms, of Sinarundinaria falcata. The cyan colour on top and the rubbery spikes are only on about a tenth of the stromata. Oak rhododendron forests, ca 8,000 ft altitude.