Review Article

Heliotropium indicum L.: From Farm to a Source of Bioactive Compounds with Therapeutic Activity

Table 1

Botanical morphology of Heliotropium indicum L.

HabitatThe disturbed areas are garden or lawns, roadsides, anthropogenic habitats, and waste places. It is mostly found at a 1,000 m altitude.

FoliageLeaves4–10 cm long and 2–5 cm wide, opposite, or sub-opposite, alternate or sub-alternate, ovate to obovate, and acute, with a wavy or undulate, serrulate, or cordate leaf margin, nerves on either side or veins. The leaf surface is covered with short hairs, which may be quite stiff.
Petiole1–7 cm long with a sub-truncate base or ovate

Flowers4–5 mm wide, regular, sessile, axillary, and slightly purple or white or whitish violet with a small yellow center and having a narrow tube with lobes formed a plate shape
InflorescenceString or twisted of beads with a prominent curl at the apex. Flowers develop apically within the cymose inflorescence.
Sepals5 in number, 3 mm long, diffused with hairs outside, deep green in color, linear to lanceolate, and uneven or unequal
Calyx lobes ciliate3 mm long
Stamens5 in number and borne in a corolla tube, terminal, and corolla tube 4–6 mm long
PetalsRounded
Ovary4 lobed

FruitsFruits, also known as nutlets, are dry, indehiscent 2–4 lobed, 3–6 mm long, with or without united nutlets, ovate, and ribbed separated into two nutlets. Each nutlet is two-celled and beaked.

Stem and rootsWide distributed, branched or unbranched, and hirsute with hairs in the stem. The root system is a long taproot and highly branched.

Genetics2n = 22, 24