Yes it is part of the cannabis genus.
(in the US) None legally, unless you are a registered grower.
Hemp is taken from cannabis sativa. Used in cloth, string, rope, paper (the US dollar bills were (an perhaps still are) partly hemp fiber.
with cellotape
Then the Lord said to Moses, "Take the following fine spices: 500 shekels of liquid myrrh, half as much of fragrant cinnamon, 250 shekels of qaneh-bosm, 500 shekels of cassia--all according to the...