[2] The only known species Spetaea lachenaliiflora is found only in the south-west of the Cape Province in South Africa.

Spetaea lachenaliiflora grows from underground bulbs which have a leathery dark brown outer tunic.

The flowers are borne on an upright stem (peduncle) in a many-flowered raceme which forms a narrow cylindrical shape.

Individual flowers have six bright blue tepals which are joined at the base for about two thirds of their length producing a narrow bell shape.

The generic name honours Franz Speta, an Austrian botanist specializing in the Scilloideae who first drew Wetchnig and Pfosser's attention to the difference between this species and the true Scilla plumbea.