540 Order 89. — LABIATjBv 



(rarely regular), upper lip 2-cleft or entire, arched or almost wanting, overlapping 

 in bud the lower 3-cleft, usually larger lip. Stamens 4, didynamoua, of only 2. 

 Anthers 2-celledj cells often separated. Ovary free, deeply 4-lobed, the single style 

 arising from the base of the lobes. Fruii composed of 4, or by abortion fewer, sep- 

 arable, l-i-eeded nuts or achenia. 



Illustrations in Figs. T5. 8G, 117, 325, 278, 351. 



Oenera lio, fipecien 2350, chiefly natives of temperate rdgioDB, being most abundant between 

 latitudes 40'=' and 5i)° of tho northern hemisphere. 



Properties. — Tliis well known family is universally pervaded by an aromatic, volatile oil, and 

 a bitter piinciplo ; the foriner iTndetin^ them eminently tonic, cordial, and stomachic ; the lat- 

 ter, where it prevails, febrifugal. The Pennyroyal La-vender^ Saf/e, Hoarhound, Thyme^ 

 Spearmint, Peppennint, Ilorsemint, Rosemary, Sc.y <&c.^ plants whose qualities aie too well 

 known to require particular mention here, are all members of this useful family. Not one spe- 

 cies is poisonous or even suspicious. 



TRIBES AND GENEBA. 

 $ Stamens 2, perfect,— ascending beneath the galea ; anthers 1-ceIIed. (Tribe IV.) 



— exserted, distant; anthers 2-celled (d). 

 $ Stamens 4, perfect,— all declined towards the lower lip. (Tribe I.) 

 -erect, or ascending towards the upper lip (2). 

 2 Stamens of equal length, corolla almost regular, 4 to 5-lobed (*c). 



2 Stamens, the upper pair longer than the lower (outer) and calys 13 to 15-veined. (Trib^VJ 

 2 Stamens, the lower pair longer than the upper (interior) pair (3). 

 3 Stamens divergent, apart, mostly straight and esserted (e). 

 3 Stamens parallel, ascending and long-exserted from the upper side (b). 

 3 Sitaniens parallel, ascending in pairs beneath the upper lip (4). 

 4 Calyx 13- veined, 5-toothed, and somewhat 2-lipped (f). 

 4 Calyx. 5 to 10-veined, or irregularly netted (5). 



5 Calyx strongly 2-lipped, upper lip truncate, closed in fruit (h). 

 5 Calyx not S-lipped, 3 or 4-Iobed, open in fruit (k). 

 5 Ciilyx subequally 5-toothcd, teeth not spinescent (m). 

 5 Calyx subequally 5-tcothed, teeth spinescent (n). 

 5 Calyx unequally S to 10-toothed (o). 



L OCIMOIDEjE.— Corolla upper lip 4-lobed, lower entire, flattish Ocimum. 1 



—Corolla upper lip 4-lobed, lower saccate, deflexed H yptib. 2 



— Corolla upper lip 2-lobed, lower 8-lobed Lavandula. 8 



II. AJUGOIDEjE. — b Stamens exserted through a fissure in the tube Teuckium. A 



b Stamens very long, involute, arching the corolla.. .. .Teichostemma, ^ 

 *e Corolla limb equally 5-lobed. Stameas^bort Isantqcs. * 



III. SATUEEJE^— (Stamens diverging or ascending, 2-celled. Cor. lobes flattish, spreading.) 



*c Corolla liuib 4-lobed, upper lobe broadest Mentha. T 



d Corolla nearly regular, 4-lobed. Calyx naked in the throat Lycopus. 8 



d Corolla bilabiate, — cyanic, throat naked. Stamens straight Cunila, 9 



—cyanic, throat naked. Stamens ascending Hisdeoma. 10 



—yellow, throat with a hairy ring inside Colunsonia. U 



e Calyx 15-veined. Stamens exserted, divergent Hvesopus. 12 



e Calyx 10-veincd, the veins obscured by hairs. Cor. yellow, fnnged Coluksonia. 11 



■^ e Calyx 10 to 13-veined, — throat naked. — Stamens straight, divergent Pycnantiikmum. 18 



— Stamens ascending, anth. 6purles3..SAT[jBEJA. 14 

 — Stamensascending, anth. spurred.DicRitANDBA. 16 



—throat hairy— Bracts roundish, large , Oiugandm, 16 



— Bracts narrow, minute Thymus, 17 



f Tube oftbe corolla straight. Leaves small, sobcrenate or entire Calamintha. 18 



f Tobc of tho corolla curved upwards. Leaves large, coarse-crcnate Melissa. 19 



IV. MONAKDE-iE. — Conncctile long, transverse, distancing tho anther cells Salvia. 20 



— Connectile continuous withfil. toothed at the juncture Eosmauinub. 21 



— Connectile inconspicuous. — Calyx subequally toothed Monaboa. 22 



—Calyx bilabiate, aristato Blephtllia. 28 



Y. NEPETE^. — Stamens distant, exserted. Flowers in terininal spikes Lopiianthtts. 24 



— Stamens all ascending. — Anther cells divergent, much Nrpeta. 25 



— Anther cells divergent, little.. .BEAOorF.piiAi.iTM. 26 



— Anther cells parallel. Fls. large. . .Ckdronella- 27 



VL 8TACnTDEyE.~(Stimen3 parallel, ascending. Cor. upper lip galeate. Cal. r> to 10-veincd.) 



h. Calyx lips toothed, upper 3 teeth minute, lower 2 large Eeiinblla. 28' 



