Medium to tall, rather foetid plant with erect usually unbranched stems, often purplish, without glands. Leaves oval to lyre shaped, with a square or heart shaped base, the upper leaves usually unstalked. Flowers lilac blue to purplish 8 to 15 mm long, in dense whorls of 15 to 30 the upper lip more or less straight.

Either obtain confirmation from a County Recorder before submitting a record, or submit detailed images showing key features.  We recommend that you take and retain a specimen; the County Recorder may wish to see this for confirmation. 

Dry grassland, bare and stony places.

May to August.

Perennial

Uncommon and local, mainly confined to the southern half of Britain.

Rare in Leicestershire and Rutland. In the Flora of Leicestershire (Primavesi & Evans, 1988) it was found in 3 of the 617 tetrads.

In the VC55 Checklist (Jeeves 2011) it is listed as Alien (Casual); disturbed ground