Amaurodon cf. viridis. On underside of fallen decaying Ohia wood - M. polymorpha. Nearby fruiting of Tapinella curtisii and Stemonitis sp.
UV = Bright neon greenish yellow, consistent with Amaurodon.
KOH = a weak purple, not as strong as other fruitings I have seen in N.A.
Fruitbodies up to 5cm wide, thin, difficult to remove from substrate.

Specimens collected, transported, deposited, duplicated, exported and DNA sequenced with the express, written permission of the Ministerio del Ambiente, Agua y Transición Ecológica (MAE) and the Instituto Nacional de Biodiversidad (INaBio), in compliance with the Nagoya Protocol. Copies of permits available to select parties upon request.

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Image #1:
Canon EOS 6D + Canon MP-E 65mm f/2.8 1-5x
0.5 sec, f/8.0, ISO 200
Color Corrected w/ X-Rite ColorChecker Passport
Focus Stacked with Zerene Stacker (31 Images)
Image #2:
Canon EOS 6D + Canon MP-E 65mm f/2.8 1-5x
0.5 sec, f/5.6, ISO 200
Color Corrected w/ X-Rite ColorChecker Passport
Focus Stacked with Zerene Stacker (41 Images)
Image #3:
Canon EOS 6D + Canon MP-E 65mm f/2.8 1-5x
4.0 sec, f/8.0, ISO 400
Color Corrected w/ X-Rite ColorChecker Passport
Focus Stacked with Zerene Stacker (8 Images)

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Additional specimens not added to iNat observation fields:
Oregon State University Herbarium: RLC1663

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Originally posted to Mushroom Observer on Feb. 14, 2022.

Wow, this one puzzled me.. the key in Madrono and BBS took me right to metzgeria.. But this was way too hairy, too hairy to fit the description and too hairy to fit the pictures.

So I looked in the PNW key to genus book and it took me straight to this genus that only has one species.

What a shock it was to see this liverwort under the scope!

This is so hairy that I had a hard time seeing the cells and could only focus in to 100X and still see the cells.

on fallen trunk in Ohia (m. polymorpha) and Acacia koa dominant forest.
KOH = Slowly yellowing with faint orange tones.
UV = Negative
Pileate, grouping in fused caps or singly, caps very small, with short stiff hairs. 3mm-1cm wide.

BDC-0340-23

Growing on fallen wood, host Acacia koa most likely.

KOH n/a; UV reactive (faint orange, green, yellow, and blue); odor indistinct; taste mildly bitter (delayed); size 19-22 mm W; 2.5 cm-19 mm H.

Notes: striped and striated when fresh, turning white quickly when dry.

Size: pileus 1.5mm-2mm. stipes 5mm-8mm. Odor: None. Taste: N/A. KOH: pale yellow brown. UV: base moderately bright whitish.

Notes: Possibly a Cuphophyllus sp. Very small, abundant fruiting in small muddy cove along disturbed trail edge.

On fallen leaves of Ohia, M. polymorpha. Seemingly common, but very easy to miss. Fruitbodies <1mm wide, to 1.7mm wide at most.

Given my lack of knowledge with these tiny foliar fungi, I can't exactly rule out that this could be in the Stictidaceae, but the growth on foliage is more typical of a member of the Rhytismatales

BDC-0107-23

Growing in moss at the base of a dead tree. Ohia and Cheirodendron in the area.

KOH not tested; UV reactive (green gills); odor indistinct; taste not tested; cap 19 mm; height 9 mm.

Notes: brown-yellowish brown striated cap with light spot in the center.

BDC-0145-23

Growing on a downed tree covered in moss. Acacia koa and Ohia lehua dominant forest.

KOH not tested; UV maybe slightly reactive (yellow?); odor indistinct; taste not tested (too small); cap 1 mm; height 1 cm.

Notes: Very diminutive. Growing in moss. Ephemeral. Growing on the same log as BDC-0280-23 & BDC-0279-23.

Associated observations:
https://www.inaturalist.org/observations/190245293
https://www.inaturalist.org/observations/190187130

Very small Pseudoscorpion on one of the multiple Trametes fruiting bodies I harvested from LBA park woodlands. Came along for ride home in my tacklebox. Gently carried it out back to the patio and released after photographing.

On a gigantic ficus with aerial roots, caps 8-20cm or more. pores strongly pink in UV (as is material found on Falcateria). Pores approximately circular, 3-4 per mm, fruitbodies quite soft when fresh. Brown where scratched.
Vouchered. From Kat and John Poppy’s residence. Growing predominately from aerial and typical roots.

BDC-0094-23

Growing in soil/duff. Hibiscus tiliaceus/Falcataria in area.

KOH not observed; UV reactive (yellow); odor indistinct; taste mild; cap 1-2 cm; height 3-4.5 cm.

Notes: Becoming very fragile. Specimens grow at a considerable rate after collecting. Cap surface very powdery.

BDC-0091-23

Growing on fallen stems of Freycinetia arborea.

KOH not reactive; UV no reaction; odor sweet/mild; taste mild/slightly sour; size 3-17mm x 1-2mm.

Notes: white bases with rudimentary stipes.

GES9

Growing from Norfolk Island Pine (Araucaria heterophylla) wood.

KOH reddish-brown; UV reactive (gills orange); odor indistinct; taste mildly bitter; cap 4 cm; height 4 cm.

Notes: Cap with patches of depressed fibrils. Gills with darker spots. Whitish ring of color on stipe near cap.

BDC-0102-23

Growing in Pyrrhobryum sp. underneath Dicranopteris. Ohia dominant forest.

KOH red on cap surface; UV reactive (especially cap surface); odor indistinct; taste indistinct; cap 1-1.5 cm; height 14 mm.

Notes: Base with white fuzz, rhizomorphic strands attached to the moss. Cap with brown striations. Light blue stipes. Growing in P. spiniforme most likely.