This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(a little cedar, from the odor of C. triphylla, a species from the Canary Islands sometimes called "Balm of Gilead"). Labiatae. Herbs or shrubs, sometimes planted in borders in the middle and southern parts of the United States.
Four species allied to Dracocephalum, to which the first 2 belong according to Bentham. Engler and Prantl consider the genus monotypic, containing only the third species below. The 2 native kinds described below are compact, free-flowering border perennials, with aromatic leaves and numerous showy purplish pink flowers with blue stamens, and borne in dense whorls on long racemes or spikes: calyx a trifle oblique, 5-toothed; corolla-tube exserted, the limb 2-lipped; stamens 4, the anthers 2-celled. - They are not quite hardy N., and should have a sheltered sunny position, or some winter protection. The first 2 prop, by division of the root, the last by cuttings.
Hook. Height 2 1/2-3 ft.: stems hard, square, subshrubby: branches numerous, especially at the base, opposite, hoary with a minute pubescence: upper leaves
small, 1/2-1 1/2 in- long, entire, hoary, numerous near the flowers, ovate; lower leaves larger, cordate-ovate, dentate - serrate: spikes numerous; whorls dense, 15- or more-flowered; corolla 1 in. long, limb 5-cleft, the lowest lobe largest, crenate, revo-lute. June-Oct. Mex. and New Mex. B.M. 4618. mexicana,Benth. (Gar-doquia betonicoldes, Lindl.). Height 1-3 ft.: root creeping: leaves 1 1/2-2 1/2 in. long, ovate-lanceolate (the lower ones cordate), crenate - dentate, becoming purplish below, petioled: flowers very like the above, bright pink. Mex., Mts. S. Ariz. B.M.3860. - Rarer in cult, than above; leaves larger, longer and fewer. Intro, into cult, in 1839.
Moench (Dracocephalum canari-ense, Linn.). Balm of Gilead. Shrubby, 3 to 4 ft.: leaflets 3, oblong or lanceolate: flowers purple or white, in loose spicate whorls. Aromatic plant from Canary Isls.
C. pallida, Lindl. Similar to C. mexicana, but differing in having shorter, pale red flowers B.R. 1846:29. It is sometimes confused with C. mexicana. N. Taylor.†