Knowltonia is a genus of flowering plants in the family Ranunculaceae. There are 25 species native to South AfricaMANNING, J.C., GOLDBLATT, P. & HOOT, S.B. 2009. The genus Knowltonia (Ranunculaceae) subsumed within Anemone. Bothalia 39: 217–219 and Latin America. The juice from the stem of many of the species in the genus is a powerful vesicant.
Species include Plants of the World Online accepts: the following species:
Knowltonia anemonoides H.Rasm. Knowltonia assisbrasiliana (Kuhlm. & Porto) Christenh. & Byng Knowltonia balliana (Britton) Christenh. & Byng Knowltonia bracteata Harv. ex Zahlbr. Knowltonia brevistylis Szyszyl. Knowltonia caffra (Eckl. & Zeyh.) Christenh. & Byng ex Mosyakin & de Lange Knowltonia capensis (L.) Huth Knowltonia chilensis (Gay) Christenh. & Byng Knowltonia cordata H.Rasm. Knowltonia crassifolia (Hook.) Christenh. & Byng Knowltonia fanninii (Harv. ex Mast.) Christenh. & Byng Knowltonia filia (L.f.) T.Durand & Schinz Knowltonia helleborifolia (DC.) Christenh. & Byng Knowltonia hepaticifolia (Hook.) Christenh. & Byng Knowltonia hootae Christenh. & Byng Knowltonia integrifolia (DC.) Christenh. & Byng Knowltonia major (Phil.) Christenh. & Byng Knowltonia mexicana (Kunth) Christenh. & Byng Knowltonia moorei (Espinosa) Christenh. & Byng Knowltonia peruviana (Britton) Christenh. & Byng Knowltonia sellowii (Pritz.) Christenh. & Byng Knowltonia tenuifolia (L.f.) Mosyakin Knowltonia transvaalensis Szyszyl. Knowltonia vesicatoria (L.f.) Sims Knowltonia whyteana (Baker f.) Engl.
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