Etymology of Knowltonia:
For Thomas Knowlton (1691–1781), English horticulturist, well known in his lifetime as a botanist and gardener with a special interest in nature, wildflowers and hothouse exotics. He was the director of the once famous botanical garden at Eltham. His life story, No Ordinary Gardener, was written by Blanche Henrey (British museum, 1896). He designed many gardens for the wealthy and collected and grew plants from around the world.
Etymology of vesicatoria:
From the Latin ‘vesicatoria’ / ‘vesicatorius’ meaning ‘relating to the bladder’
Knowltonia vesicatoria (L. f.) Sims
Bot. Mag. 20: t. 775 (1804)
Tufted perennial to 1.2 m, rhizome horizontal. Leaves leathery, ternate or triternate, segments ovate, toothed. Flowers in scapose umbels not much longer than the leaves, white to yellowish-green. Fruits glabrous. Aug.--Oct. Scrub or woody ravines, NW, SW, AP, LB, SE (Bokkeveld Mts to Cape Peninsula to E Cape).