Synonyms: Heliotropium tenuifolium (homotypic); Heliotropium tenuifolium var. alsinoides; Heliotropium tenuifolium var. annuum; Heliotropium tenuifolium var. benthamianum; Heliotropium tenuifolium var. diffusum; Heliotropium tenuifolium var. distantiflorum; Heliotropium tenuifolium var. exsertum; Heliotropium tenuifolium var. majoriflorum; Heliotropium tenuifolium var. parviflorum; Heliotropium tenuifolium var. parvilobum; Heliotropium tenuifolium var. speciosum; Heliotropium tenuifolium var. typicum