Helianthus arizonensis, Helianthus atrorubens, Helianthus bolanderi, Helianthus californicus, Helianthus carnosus, Helianthus ciliaris, Helianthus cusickii
28 KB (884 words) - 21:11, 5 November 2020
applied to plants here called H. ×laetiflorus. Clevenger, S. and C. B. Heiser. 1963. Helianthus laetiflorus and Helianthus rigidus—hybrids or species? Rhodora
4 KB (411 words) - 21:12, 5 November 2020
sunflower hélianthe rigide Endemic Synonyms: Helianthus laetiflorus var. rigidus (Cassini) Fernald Helianthus rigidus (Cassini) Desfontaines Treatment appears
3 KB (185 words) - 21:12, 5 November 2020
subrhomboïdal Endemic Basionym: Helianthus subrhomboideus Rydberg Mem. New York Bot. Gard. 1: 419. 1900 Synonyms: Helianthus laetiflorus var. subrhomboideus (Rydberg)
3 KB (202 words) - 21:12, 5 November 2020
subtribe Helianthinae genusHelianthus speciesHelianthus pauciflorus Show Lower Taxa Helianthus pauciflorus subsp. pauciflorus, Helianthus pauciflorus subsp. subrhomboideus
4 KB (340 words) - 19:25, 6 November 2020