This section is from the book "British Wild Flowers - In Their Natural Haunts Vol5-6", by A. R. Horwood. Also available from Amazon: A British Wild Flowers In Their Natural Haunts.
This plant is distinguished by its long and slender habit, the leaves being shorter and narrower with longer internodes and more compact flowers than in E. minima, to which Mr. Beeby reduced it as a variety, in which opinion Mr. F. N. Williams (Prodr., p 307) concurs. The stem is firm, simple, or branched at or below the middle. The leaves are rigid, nearly hairless, with few short hairs on the margin, ovate to oblong, with 6-8 teeth. The stem-leaves have blunt teeth. The spike is interrupted below. The lower bracts have blunt teeth. The upper bracts have a wedge-shaped base, and the teeth have a short awn, the lower ones being bent inwards. The flowers are white or violet and white. The calyx-teeth are broadly triangular, acute, and clothed with small bristles, like the veins. The corolla is small. The upper lip has notched lobes, the lower is the same length, longer than the tube. The capsule is oblong or narrow below, fringed and covered with hairs above.
The habitat of this plant is maritime. The whole plant is downy. The stem is stout, ascending, branched below. The leaves are clothed with small stiff bristles and short glandular hairs. The stem-leaves are ovate, or more or less acute, with 6-10 acute teeth.