Literature for Heliotropium procumbens Wagner et al., 1990, 1999. Literature for Heliotropium procumbens var. depressum Wagner et al., 1990, 1999.
Heliotropiaceae	Bibliography
Heliotropium procumbens

General Information
Distribution	Native from southern United States south to Central and South America and the West Indies.
Habit	Pale green to gray, erect to decumbent perennial herbs 1-5 dm tall, moderately to densely appressed pubescent; stems 1 to several from base, usually branched above.
Leaves	Leaves numerous, linear-lanceolate, narrowly oblanceolate to elliptic, flat, sometimes revolute, 1-4 cm long, 0.2-1 cm wide, apex acute or short-acuminate, gradually narrowed toward the base.
Flowers	Flowers in clusters of 1-4 elongate, open, bracteate, scorpioid cymes 2.5-10 cm long, peduncles 0.5-3 cm long; calyx deeply divided, the lobes unequal, linear to lanceolate, at anthesis 1-1.2 mm long, at maturity nearly doubling in size and becoming progressively more unequal; corolla white, 1.5-3 mm long, the tube sparsely strigose externally.
Fruit	Nutlets 4, 1-seeded, ovoid, 1-2 mm long, densely strigose.
Chromosomes	2n = 14