Heliotropium indicum L.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Boraginaceae
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Scientific Name
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Description
Species Description - Erect, sparsely hirsute, taprooted annual 3–8 dm; lvs ovate or deltoid-ovate, 4–10 cm, scabrellate, decurrent on the long petiole; spikes secund, mostly solitary at the end of the branches, eventually 8–15 cm; cor blue, 3–4 mm wide; fr 2.5–4 mm, divergently 2-lobed to about the middle, each lobe composed of 2 united (but separable) nutlets, each nutlet sharply ridged longitudinally on the back, tapering to the summit, with an abaxial fertile chamber and a swollen, adaxial empty one. A pantropical weed, supposed to be native to Brazil, extending n. to Va., s. Ind., and Mo., and rarely farther as a waif. May–Oct. (Tiaridium i.)
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Common Names
turnsole