This species has a single, erect, slender, lanceolate-attenuate, petiolate leaf (100mm x 25mm), which has slightly wavy margins. The leaf appears from April to October (southern hemisphere). The tuber is irregular or slightly pear-shaped.
The flowers appear after the leaf is already dry, from March until May, on a thin, slender raceme.
This is one of several species that have slender, erect, lanceolate or linear leaves, including Eriospermum exile, Eriospermum graminifolium and Eriospermum lanceifolium.
Eriospermum lanceifolium also has an erect, lanceolate leaf, but its leaf is larger (160mm long; 48mm wide) than that of E.bayeri (100mm long; 25mm wide), and its leaf has a margin that is more strongly undulate, and often hairy. The leaf of Eriospermum lanceifolium is also a blue-green colour and has a leathery texture.
Vegetatively it resembles Eriospermum crispum, a species known only from Calitzdorp, but the lamina of the latter species is more firm and crisped.