Primula sapphirina has a bell-shaped corolla that hangs downwards, lacks spherical hair tufts at the throat, and has shorter flower styles compared to Primula primulina.
It flowers in July.
Usually 2-3 bracts, lanceolate to narrowly ovate, 1.5-3 mm long, often purplish-black.
The scape is slender, 1-5 cm tall, sparsely glandular. 1-4 flowers are borne at the apex of the scape, sessile without pedicels.