Favoritos de ethancrenson

On bare ground, in a mixed, wet forest close to a marsh tiny whitish cup fungi. Growing scattered in two spots, about a dozen fruiting bodies in each spot.
Apothecia sessile, pulvinate, with smooth margin, 0.5-1mm in diameter. They look like grains of sand.
Asci operculate, 8-spored, H+, biseriate.
Ascospores ellipsoid, hyaline, with big round warts and multiguttulate.
Paraphyses filiform, hooked, sometimes with small guttules, septate.
Margin textura globulosa.
Observed again on June 25, July 2 and July 21 2024.

Growing on and around disintegrated stromata of Hypoxylon crocopeplum. Collection was originally retrieved 07/03/23 (https://www.inaturalist.org/observations/170932615) Substrate was taken home to study throughout the year, these photos are from the second fruiting that occurred on 11/19/23. Amber pigments in KOH. Ascospores ellipsoid, biguttulate. Croziers +

tentative ID.
growing on the cut end of a wooden post, possibly Pinus strobus.
in the field, seeing that it had a shiny, silvery-green, granular crustose thallus and it was growing on old wood, i took it for Trapeliopsis flexuosa.
i now think i was wrong. the apothecia don't match those of Trapeliopsis flexuosa. my best guess at this point is a Micarea sp., which matches ecology, the thallus, and the small, marginless, white/light apothecia, such as those seen here: https://www.waysofenlichenment.net/lichens/Micarea%20prasina
Lendemer & Allen list Micarea prasina as present in NYC, along with 2 other Micarea sp.

Tiny black ascoma on Ostrya virginiana overwintered leaf. Perithecia black with a long neck, immersed in leaf veins. About a dozen.
Asci 8-spored, unitucate.
Ascospores hyaline, with 1-septum, narrow-fusiform with long appendages at both ends, measured
*(12.3) 12.5 - 15.9 (16.1) × (1.3) 1.5 - 1.7 (1.8) µm
Q = (7) 7.8 - 9.9 (10.1) ; N = 11
Me = 13.7 × 1.6 µm ; Qe = 8.6

Mixed hardwood/conifer forest in the Madeline Sone Wildlife Preserve
Growing on cut woody Toxicodendron diversilobum vine which was lying on the ground under a canopy of Quercus agrifolia
Tiny, black lumps growing on the exterior of vine, about 25% displaying a vertical, rectangular ascomata resembling compressed layers of carbon

Small brown jelly fungi was growing on Crataegus branch.
Basidiospores hyaline, allantoid measured
*(11.8) 12.1 - 13.4 (14.2) × (5.6) 5.8 - 6.38 (6.4) µm
Q = (1.9) 2 - 2.2 (2.4) ; N = 12
Me = 12.7 × 6 µm ; Qe = 2.1
Basidia 4-sterigmate, longitudinally 4-septate.
Hyphae without clamps.

Found two specimens ~1m apart in a large Rhododendron - one (pictured) gripping the underside of a branch and the other (not pictured) gripping the edge of a leaf. Specimens sent with João Araújo to NYBG

Truffle like fungus I found on top of the dirt under a thick layer of maple leaves. Thick outer skin with geometric and circular cavities filled with a whitish semi transparent gel. Red staining around insect bites. No pronounced odor. Collected and brought home. After a few days in the fridge I cut into it again and discovered blue green tones developing from the exterior in. Spherical spores with little warts on them.

On incense cedar.

Hysterothecia superficial, 0.7 x 0.3 mm. Ascospores pigmented yellowish brown, phragmosporous, 3-septate, 37-40 x 10-13 µm

Reference:
A molecular phylogenetic reappraisal of the Hysteriaceae, Mytilinidiaceae and Gloniaceae (Pleosporomycetidae, Dothideomycetes) with keys to world species (Boehm et al., 2009).

On dead Fraxinus branch black pyrenomycetes fungi. The branch was attached to a living tree. Perithecia erumpent from the bark in clusters.
Asci 8-spored, bitunicate, IKI-.
Ascospores are dark brown with 1-septum, smooth, measured
(23.8) 23.84 - 27.9 (28.4) × (11.2) 12.6 - 13.6 (14.1) µm
Q = (1.8) 1.9 - 2.06 (2.1) ; N = 11
Me = 25.9 × 13.1 µm ; Qe = 2

Tiny blueish-greenish cup fungi on a bark of Oak (Quercus alba). I found only 2 cups on a broken corticated branch. The largest apothecium was only 0.45mm in diameter and matured.
Asci 8-spored, IKI-, croziers(+).
Ascospores are hyaline, aseptate, multiguttulate, subfusiform, measured
(5.8) 6.7 - 8.15 (8.2) × (2.3) 2.4 - 2.8 (2.9) µm
Q = (2.1) 2.4 - 3.3 (3.5) ; N = 22
Me = 7.4 × 2.6 µm ; Qe = 2.9
Paraphyses filiform, septate, without VBs.
Margin with pointed hairs.

On decorticated hardwood branch at a beaver pond.
Asci 8-spored, IKI-, croziers(+).
Ascospores long, mostly cylindrical, multiguttulate with 3 or maybe more septa, measure
(28.6) 33.5 - 39.76 (39.8) × (4.4) 4.5 - 5.2 (5.3) µm
Q = (5.7) 6.4 - 8.8 (8.9) ; N = 9
Me = 36.1 × 4.9 µm ; Qe = 7.3

Paraphyses are filiform with VBs.
The ectal excipulum is bark brown.

I found it on many Salix branches in this area during this walk.