Brassica campestris linn

Brassica campestris linn
(a) Give the common name of the plant.
(b) What do the first two parts of the name denote ?
© Why are they written in italics ?
(d) What is the meaning of linn written at the end of
the name ?

(a) Common name of the plant is mustard.
(b) Brassica is the generic name and campestris is the specific name or specific epithet.
© Both the words in a scientific name when printed they must be in italics. This is done to highlight their origin from Latin.
(d) At the end of the biological name i.e., after the specific epithet name of the author is written in an abbreviated form. Here linn, indicates that this species was first described by Linnaeus.