Host: on adult beetle (Coleoptera)

Habitat: montane to high-montane, humid, secondary mountain forests

Ecoregion: Bolivian Yungas (NT0105)

Collectors: D. Newman, P. Kaishian, L. Deininger, D. Ettlinger & T. Padilla

Collection #: CoHo008

Substrate is commercial milled wood, possibly pine. Internally and externally plicate, spore dimensions exactly between those of C. berkeleyanus (pallidum group) and C. limbatus (gigasporum group) in Cortez (2009). See https://www.inaturalist.org/observations/178741492 for a subsequent fruiting on same substrate with sequence

Growing on the stems of a Cantharellus species. Potential ECM hosts in the area were Quercus spp., Carya spp., Carpinus caroliniana, Ostrya virginiana and Fagus grandifolia.

Substrate: on corticate, small stick

Habitat: montane to high-montane, humid, secondary mountain forests

Ecoregion: Bolivian Yungas (NT0105)

Collectors: D. Newman, P. Kaishian, L. Deininger, D. Ettlinger & T. Padilla

Collection #: APA058

K. Paxton reported tiny anamorphs in our burn-pile. I raised a board and revealed claw-like structures. We re-covered the pile. Now there are many more as shown in the context shot.
Photos 11-21 by @kallampero; photo # 18 is 400x, all others 1000x and in Melzer's.
Notes also from Danny:

"The spore measurements are as follows:

13.34 4.26
15.67 4.29
11.85 4.08
12.01 4.11
13.63 4.06
13.81 4.26
12.45 3.89
13.46 4.94
13.55 4.40
13.39 4.31
13.92 4.42
14.07 4.19
11.27 4.43
12.45 4.40
12.15 3.94
12.26 4.03
12.05 4.08
12.89 4.16
11.29 4.29
12.40 4.30
12.16 4.08
14.22 4.38
13.48 4.41
12.42 4.64
14.32 4.48
11.01 4.38
11.86 3.87
10.97 4.35
12.44 4.04
12.53 4.37
13.80 3.79
12.19 4.36
12.60 4.55
11.41 4.13
12.74 4.38
12.11 4.28
12.68 4.43
13.72 4.38
12.45 4.38
11.56 4.27
11.64 4.14
11.58 3.63
12.14 4.21
12.55 4.17
12.43 4.28
12.85 4.45
12.60 4.12
15.89 4.77
11.58 4.36
12.24 3.91

(11) 11.6 - 13.9 (15.9) × (3.6) 3.9 - 4.4 (4.9) µm
Q = (2.5) 2.7 - 3.2 (3.7) ; N = 50
Me = 12.7 × 4.3 µm ; Qe = 3

I would also add to this that the germ slit is spore length, straight to slightly curved, and that the spores appear to be biguttulate when fresh, and 1-guttulate when dried."

127

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.