[1] It is notable for its distinctive white, thin growth patterns and small sporodochia, or spore-producing structures.

The etymology of the species name primorskiense derives from Primorsky Krai, the region in the Russian Far East where the type specimen was discovered.

[2] Sporodophoron primorskiense is characterised by a thin, whitish, continuous thallus, which appears pale olivaceous grey to white.

[2] Sporodophoron primorskiense forms sporodochial conidia, or asexual spores, that have between 0 and 2 septa, with an irregular shape that can be round, elliptical, or short cylindrical.

This species is also distinct from Sporodophoron americanum, another member of the same genus, which differs in its chemical composition and has wider sporodochial conidia.

[2] The following year, the lichen was reported from Toyama Prefecture in Japan, where it was found in an old-growth forest growing on the bark of Fagus crenata at an elevation of about 1,000 m (3,300 ft).