Lavender belongs to the Laminaceae family and is a small plant that produces a flowering stem with a classic colour and intense fragrance.
It reaches a height of 90 cm.
Lavender species :

• Lavandula officinalis, Lavandula spica
• Lavandula stoechas
• Lavandula latifolia
• Lavandula angustifolia
• Lavandula dentata

Then there is a whole plethora of hybrids, the Lavandini, used in cultivation for their higher yield and essential oils.  
  

This study considers that, in the light of literature reports as a medical plant effective in the treatment of inflammation, depression and stress, due to its sedative and anxiolytic action, thrombotic and antimicrobial properties, the results demonstrate DNA-protective activity (1).

Lavender's anti-inflammatory activity is due to its high polyphenol content (2).

References________________________________________________________________________

(1) Kozics K, Srancikova A, Sedlackova E, Horvathova E, Melusova M, Melus V, Krajcovicova Z, Sramkova M. Antioxidant potential of essential oil from Lavandula angustifolia in in vitro and ex vivo cultured liver cells. Neoplasma. 2017;64(4):485-493. doi: 10.4149/neo_2017_401.

(2) Hajhashemi V, Ghannadi A, Sharif B. Anti-inflammatory and analgesic properties of the leaf extracts and essential oil of Lavandula angustifolia Mill. J Ethnopharmacol. 2003 Nov;89(1):67-71. doi: 10.1016/s0378-8741(03)00234-4.