Warm, earthy, animal scent. Botanical name: Valeriana jatamansi (Nardostachys Jatamansi). Also called nard, nardin, and muskroot.
Spikenard is mentioned in the Bible several times, e.g.
Then took Mary a pound of ointment of spikenard, very costly, and anointed the feet of Jesus, and wiped his feet with her hair: and the house was filled with the odour of the ointment. [John.12,1,3]