Tracheliospermum jasminoides

The flowers are white, 1–2 cm (3⁄8–3⁄4 in) diameter, with a tube-like corolla opening out into five petal-like lobes. The white, rotate actinomorphic flowers have a calyx formed by five narrow, smooth, reflexed sepals 2−5 mm , much shorter than the corolla tube. The latter has a dilated tube in the middle, 5−10 mm long, terminating in 5 obliquely bypassed lobes, all curved, resembling a helix turning counterclockwise. Just thought I'd copy the botanical description of the "Star Jasmine" flowers, for fun. The flowers are unusual because of their strange shape and very fragrant.