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Truncocolumella citrina
Truncocolumella citrina, photographed by Nhu Nguyen, Mendocino Co., California.

Truncocolumella citrina

Truncolumella citrina is a forest-dwelling false truffle distributed across coastal CA, OR, WA and into western WA along the range of Pseudotsuga menziesii. Curiously, it is only associated with the coastal and northern forms of P. menziesii and not in the southern Rockies. This species has a characteristically bright yellow gleba and a remnant of a stalk or columella. It is a close relative of Suillus based on molecular phylogenies (Shi et al. 2016).

This genome is part of the Community Science Program (Proposal 502931) “A genome atlas of the ectomycorrhizal genus Suillus: Phylogenetic diversity and population genomics of a keystone guild of symbiotic forest fungi”, a collaborative effort aimed at using genomics data to understand and connect the evolutionary history, ecology, and genomic mechanisms of mutualistic ectomycorrhizal symbionts and their Pinaceae hosts. Please contact the PI for permission prior to the use of any data in publications.


Shi XF, Yu FQ, Zhang R, Liu PG. 2016. Two new species of Suillus associated with larches in China. Mycotaxon. 131:305–315, doi:10.5248/131.305.