It causes brassica dark leaf spot on most Brassica species, including economically important crops.

Alone, each of these diploid genomes produces a common Brassica species.

(More specifically, they are amphidiploid, i.e., containing one diploid genome from each of the two different Brassica species).

Brassica species contain glucosinolates, which are sulfur-containing secondary compounds.

There is some disagreement among botanists on the classification and status of Brassica species and subspecies.

Downy mildew is a disease of major importance on the horticultural Brassica species.

The oilseed is sometimes confused with rapeseed oil, which however comes from a different Brassica species.

L. maculans metabolizes brassinin, an important phytoalexin produced by Brassica species, into indole-3-carboxaldehyde and indole-3-carboxylic acid.

The larvae possibly feed on Brassica species.

Brassica species may cause baby colic in breast-feeding.