Original: It is an herbaceous perennial, growing to 1 m in height, with pinnate leaves about 7 - 15 centimetres (3 - 6 in) long, with 9 - 17 leaflets.
Simplified: It is an herbaceous perennial, growing to 1 m in height, with pinnate leaves about 7 - 15 centimetres (3 - 6 inches) long, with 9 - 17 leaflets.