This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
A small genus of herbs with pinnate or pinnatifid leaves, distinguished by the upper lip of the corolla being elongated and narrowed at the base and hairy on the outside, and the lower lip with three spreading lobes. The species are natives of the Levant and North-western India. Name from solitary, and a spike.
1. E. laainiata. - A striking plant from 3 to 4 feet high with hairy pinnate leaves. Leaflets irregularly lobed and toothed. Flowers in a terminal bracteate spike, purple and yellow. A native of Western Asia, flowering in Summer.
E. Iberica, from the same country, has less hairy leaves and yellow flowers.