Helianthus radula is a North American species of sunflower known by the common name rayless sunflower or pineland sunflower. It is native to the southeastern...
2 KB (125 words) - 18:42, 21 June 2022
the species of Helianthus are native to North America and Central America. The best-known species is the common sunflower (Helianthus annuus). This and...
31 KB (3,155 words) - 14:57, 24 May 2024
purpurea (as R. purpurea) Helianthus angustifolius (as R. angustifolia) Helianthus porteri (as R. porteri) Helianthus radula (as R. radula) Ratibida columnifera...
11 KB (1,130 words) - 17:50, 16 October 2023
Harvard University Herbaria, Cambridge, MA. Schilling, Edward E. (2006). "Helianthus". In Flora of North America Editorial Committee (ed.). Flora of North...
7 KB (643 words) - 17:13, 15 October 2023
rockrose Helianthus annuus — common sunflower Helianthus couplandii — Coupland's sunflower Helianthus decapetalus — thin-leaved sunflower Helianthus divaricatus...
40 KB (3,083 words) - 01:25, 16 November 2023
List of Asteraceae of South Africa (section Helianthus)
invasive Genus Helianthus: Helianthus annuus L. not indigenous, invasive Helianthus argophyllus Torr. & A.Gray, not indigenous Helianthus debilis Nutt....
245 KB (24,662 words) - 16:59, 4 May 2024