Radinosiphon is a deciduous cormous genus in the Iridaceae family of probably 2 species found from Mpumalanga Province, South Africa and Swaziland up through southern Tanzania. Flowers are long-lived, salver-shaped, pink to light purple. It is in the Croceae tribe.
Radinosiphon leptostachya from Mpumalanga Province, South Africa has small flowers and only two seeds per capsule.
Radinosiphon lomatensis is a species with larger flowers and more seeds. This species is pollinated by the long-proboscid fly.