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Several large mushrooms growing scattered on the ground next to a pile of stumps and branches. Near coast live oak as well. Unpleasant odor.

Looks like the same as https://www.inaturalist.org/observations/201199963

Substrate: dark of sappy downed tree, smell of pickles and yellow latex, same as others? 5-15 cm diam

Habitat: Northwest Andean montane forest (NT0145)

Collectors: D. Newman & R. Vandegrift

Collection #: RLC1241

Photomicrography and molecular data forthcoming

Spores yellowish, ornamented, globose. Diameter (4.2) 5.2–6.2 (7.2) μm. Mean longest axis 5.8 μm. Ornamentation 1–1.3 µm high.

Endoperidial surface strongly verrucose, with warts up to 0.2 mm high.

Morphologically similar to Myriostoma calongei, with variation in basidiospore size tending toward the lower end of the described range (5.9–8.7 × 5.6–7.6 μm).

Reference:
Sousa JO, Suz LM, García MA, Alfredo DS, Conrado LM, Marinho P, et al. (2017) More than one fungus in the pepper pot: Integrative taxonomy unmasks hidden species within Myriostoma coliforme (Geastraceae, Basidiomycota). PLoS ONE 12(6): e0177873. https://doi.org/10.1371/journal.pone.0177873

Chaparral. On Ribes indecorum
Ascoma erumpent perithecia with a central depression. Peridium brilliant orange pseudo-parenchyma. Asci thin-walled with many hundreds of spores. Ascoconidia allantoid, 3-3.8 μm.
Anamorph red orange, erumpent, often together with teleomorph.

Truffle dog found three in one area, two growing gregariously. Truffles were found close to the surface, growing among rocks and organic matter. Douglas-fir forest, mixed age. The truffles have a very pleasant, sweet aroma. Not overpowering, but with a presence. Somewhat reminiscent of a ripe apple. Peridium smooth, dull yellow, hymenium velvety with a pink/reddish hue. Spores bright yellow, 8 per ascus.

Seems to match description of H. variiformis, except for the distinctly pink hymenium.

Exterior slightly fuzzy hairy ; very robust and heavy compared to P. ammophila; paler colors overall.
With Willow (Salix).

Measured 10 spores:
23-27 x 15-17 µm; avg: 24.7 x 16 µm
Q 1.4-1.6, avg 1.5

Spores large, smooth, ellipsoid, uniguttulate, with a wall. Asci 8-spored, without apical apparatus.

This more or less falls in line with the accounts given by Yao, especially given the large fruitbodies.