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LABIATE. (MINT FAMILY.) 
Order 71. LABIATiE. (Mint Family.) 
Chiefly herbs , with square stems , opposite aromatic leaves , 
more or less 2-lipped corolla , didynamous or diandrous sta¬ 
mens, and a deeply \-lobed ovary , which forms in fruit 4 
little seed-like nutlets or achenia surrounding the base of 
the single style in the bottom of the persistent calyx , each 
filled ivith a single erect seed. — Albumen nearly none : 
radicle at the base of the fruit. Upper lip of the corolla 2- 
lobed or sometimes entire; the lower 3-lobed. Stamens, as 
in all the allied families, inserted on the tube of the corolla. 
Style 2-lobed at the apex. Flowers axillary, chiefly in cy- 
mose clusters, which are often aggregated in terminal spikes 
or racemes. 
Synopsis. 
* Corolla with the border somewhat equally 4-5-cleft. 
1. Isanthus. Stamens 4, nearly equal. Corolla 5-lobed. 
"■ Mentha. Stamens 4, distant. Corolla 4-lobed \ lobes spreading. 
3. LiVcopus. Stamens 2 . Corolla 4-lobed j lobes spreading. 
4. Origanum. Stamens 4. Corolla 4-lobed, the upper lobe or lip 
erect. 
* * Corolla evidently 2-lipped. 
Stamens 2 (the others wanting or rudimentary) : anthers not halved. 
5. Collinsonia. Calyx 2-lipped. Corolla elongated, somewhat 2- 
lipped, the pendent middle lobe of the lower lip much larger 
than the others, lacerate-fringed. Stamens much exserted, 
diverging. 
6. Hedeoma. Calyx 2-lipped ; the lower lip 2-cleft. Upper lip of 
the corolla flat, the lower equally 3-lobed. Stamens ascend¬ 
ing, scarcely exserted. 
7. Cunila. Calyx equally 5-toothed. Upper lip of the corolla flat- 
tish, the lower somewhat unequally 3-lobed. Stamens erect, 
exserted. 
8. Blephilia. Calyx short, 2-lipped; the 3 teeth of the upper lip 
awned. Corolla dilated at the throat, the lips oblong; the 
upper erect. 
9. Monarda. Calyx elongated, 5-toothed. Lips of the corolla lin¬ 
ear, the upper involving the filaments. 
•*- Stamens 2 : anther-cells widely separated or one of them wanting. 
10. Salvia. Calyx and corolla strongly 2-lipped. Connective long 
and thread-shaped, jointed with the filament. 
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