This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol3", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Perennial hirsute or pubescent erect herbs, with axillary and terminal dense glomerules of rather small purplish or bluish flowers, or the glomerules in terminal more or less interrupted spikes. Calyx tubular, 13-nerved, not villous in the throat, 2-lipped, the upper lip 3-toothed, the lower 2-toothed, the teeth all aristate or those of the lower lip subulate. Corolla glabrous within, the tube expanded above, the limb 2-lipped; upper lip erect, entire; lower lip 3-lobed, the notched middle lobe narrower than the lateral ones. Anther-bearing (anterior) stamens 2, ascending, exserted or included; posterior stamens reduced to filiform staminodia, or none; anthers 2-celled, the sacs divaricate, somewhat confluent at the base. Ovary deeply 4-parted; style 2-cleft at the apex. Nutlets ovoid, smooth. [Greek, eyelash, from the fringed calyx-teeth.]
Two species, natives of eastern North America. Type species: Blephilia ciliata (L.) Raf.
Upper leaves lanceolate or oblong, sessile or short-petioled, slightly serrate.
1. B. ciliata.
Leaves ovate or ovate-lanceolate, long-petioled, sharply serrate.
2. B. hirsuta.
Monarda ciliata L. Sp. Pl. 23. 1753.
Stem puberulent, or short-villous above, commonly simple, 1°-2° high. Lower leaves and those of sterile shoots ovate or oval, slender-petioled, crenate-den-ticulate, 1' - 2' long, the upper lanceolate or oblong-lanceolate, short-petioled or sessile, mostly acute, longer and narrower, nearly entire; flower-clusters in a terminal spike and in the uppermost axils; outer bracts ovate to lanceolate, acuminate, usually purplish, pinnately veined, ciliate; calyx hirsute, the teeth of the upper lip about one-third longer than those of the lower; corolla purple, villous-pubescent, 5"-6" long; stamens exserted or included.
Monarda hirsuta Pursh, Fl. Am. Sept. 19. 1814.
Blephilia nepetoides Raf. Journ. Phys. 89: 98. 1819.
Blephilia hirsuta Torr. Fl. U. S. 27. 1824.
Stem villous-pubescent, or glabrous, usually branched, 1 1/2°-3° high. Leaves membranous, ovate or ovate-lanceolate, acuminate at the apex, rounded, cordate or narrowed at the base, sharply serrate, slender-petioled, 2' - 4' long, or the lower shorter and broader; flower-clusters axillary, or in. a short terminal spike; outer bracts lanceolate or linear-lanceolate, long-acuminate, hirsute; calyx-tube nearly glabrous, its teeth very villous, those of the upper lip much exceeding the lower; corolla pubescent, pale purple, rather conspicuously darker-spotted, 4"-5" long.
In woods and thickets, Quebec and Vermont to Minnesota, Kansas, Georgia and Texas. Ascends to 4000 ft. in North Carolina. June-Sept.