Helenium virginicum Helenium drummondii Helenium vernale Helenium microcephalum Helenium radiatum Helenium bolanderi Helenium argentinum Helenium longiaristatum Helenium vallenariense Helenium fimbriatum Helenium chihuahuense Helenium aromaticum Helenium tinctorium Helenium scaposum Helenium integrifolium Helenium flexuosum Helenium campestre Helenium mexicanum Helenium quadridentatum Helenium donianum Helenium brevifolium Helenium pinnatifidum Helenium laciniatum Helenium atacamense Helenium bigelovii Helenium elegans Helenium amarum Helenium apterum Helenium glaucum Helenium scorzoneraefolium Helenium urmenetae Helenium autumnale Helenium ovallense Helenium puberulum Helenium thurberi Helenium polyphyllum Helenium insulare Helenium arizonicum Helenium linifolium
Actinella Graemia Grahamia Hecubaea Leptopoda Mesodetra Picradenia Tetrodus Actinea Cephalophora Leptophora
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024