High Quality Content by WIKIPEDIA articles! Heliotropium nigricans is a species of plant in the Boraginaceae family. It is endemic to Yemen. Its natural habitat is subtropical or tropical dry forests. Heliotropium is a genus of flowering plants in the borage family, Boraginaceae. There are 250 to 300 species in this genus, which are commonly known as heliotropes. The name "heliotrope" derives from the fact that these plants turn their leaves to the sun. (helios) is Greek for "sun", (tropein) means "to turn". The Old English name "turnsole" has the same etymology.

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