Genevensis has not; both bear handsome spikes of blue labiate flowers.
Handsome labiate plants, requiring a warm and well-drained soil.
Handsome labiate plants, flowering towards autumn, and preferring a cool soil and partially shaded situation.
Mussinii, i ft., is a compactly spreading greyishleaved labiate, with lavender-blue flowers, and is sometimes used for bedding or for marginal lines in large compound beds.
Labiate plants have decussate leaves, while Boragin aceae have alternate leaves, and Tiliaceae usua ally have distichous leaves; Rubiaceae have opposite leaves.
Labiate, composite and umbelliferous plants are most common.