Habit: Annual, perennial herb [shrub], glabrous to bristly or strigose.
Stem: prostrate to erect, branched.
Leaf: generally cauline, petioled to sessile, generally entire.
Inflorescence: flower 1 in axils or many in terminal coiled spike-like cymes.
Flower: corolla rotate to bell-shaped, white to purple; stamens attached on upper tube, included, anthers +- sessile; style 0 or not lobed, stigma 1, linear to disk-like.
Fruit: nutlets 2 or 4, erect, generally ovoid to spheric, smooth, roughened, or hairy, scar generally lateral.
Species In Genus: +- 250 species: temperate, tropics. Ornamental, cultivated for medicinal drugs.
Etymology: (Greek: sun turning, from some species flowering at summer solstice)
Jepson eFlora Author: Ronald B. Kelley & Dieter H. Wilken
Unabridged Reference: Ewan 1942 Bull So Calif Acad Sci 41: 51--57Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)Key to Heliotropium
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