Cannabis indica is an annual plant in the family Cannabaceae.
It is a putative species of the genus Cannabis. Whether it and Cannabis sativa are truly separate species is a matter of debate.

The Cannabis indica plant is cultivated for many purposes; for example, the plant fibers can be converted into cloth. Common effects associated with this strains include feeling relaxed, euphoric, happy, and sleepy. Indicas are commonly known as “nighttime” strains, used for relaxing and unwinding at the end of the night.
Cannabis sativa strains are generally uplifting and give you a ‘high. ‘ Sativa strains mainly consist of a high limonene content that uplifts the mood.

There are strains of cannabis, such as Indica, that induce sleepiness.