[5] The species Siphulopsis queenslandica initiates its growth as small, scale-like patches (squamulose) and soon develops into shrub-like, cushioned clumps (fruticose), typically presenting a whitish to pale ashen-grey colour.

This layer also contains sporadically interspersed dead cells of its photosynthetic partner, a unicellular green alga.

However, it possesses pycnidia, which are small, flask-shaped structures embedded within the thallus, producing bacilliform (rod-shaped) conidia, which are involved in asexual reproduction.

[5] The chemical composition of Siphulopsis queenslandica includes thamnolic acid, a secondary metabolite common in many lichen species.

[5] The generic description of Siphulopsis references its fruticose thallus that contains thamnolic acid, which is somewhat similar to Siphulae Fr.