540 Order 89.— LABIATE. 



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

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

 Anlbera 2-celled, cells often separated. Ovary free, deeply 4-lobed, tbe single style 

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

 arable, 1-seodcd nuts or achenia. 



Illustrations in Figs. 75, SG, 117, 325, 273, 351. 



Genera 125, specie* 2350, chit-fly natives of temperate regions, being most abundant between 

 latitudes 40° and 50° of the northern hemisphere, 



Propertiex. — This well known family is universally pervaded by an aromatic, volatile oil, nnrt 

 a bitter principle ; the former rendering them eminently tonic, cordial, and .stomachic ; the lat- 

 ter, where it prevails, febrifugal. The Pennyroyal, Lavender, Sage, Hoarhound, Thyme, 

 Spearmint, Peppermint, Borsemint, Rosemary, &c., <&c, plants whose qualities arc too well 

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

 cies is poisonous or even suspicious. 



TRICES AND GENERA. 

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



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

 S 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 (*e). 



2 Stamens, the upper pair longer than the lower (outer) and calyx 13 to 15-veined. (Trib* YA 

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

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

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

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

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

 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 2-lipped, 3 or 4-lobed, open in fruit (k). 

 5 Calyx stibequally 5-toothed, teeth not spinescent (m). 

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

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



L OCIMOIDEiE.— Corolla upper lip 4-lobed, lower entire, Cattish Ocimum. 1 



— Corolla upper lip 4-lobed, lower saccate, deflexed II yptis. U 



— Corolla upper lip 2-lobed, lower 3-lobed Lavandula. 8 



II. AJUGOIDEjE. — b Stamens exscrted through a fissure in the tubo Tkucuium. 4 



b Stamens very long, involute, arching the corolla . .. .Tkiiiiostkmma. 6 

 *C Corolla limb equally 5-lobcd. Stamens short Isantuus. • 



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



*C Corolla limb 4-lobed, upper lobe broadest Mentha. 7 



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



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



— cyanic, throat naked. Stamens ascending Hi.deoma. 10 



— yellow, throat with a hairy ring inside Collinsoxia. 11 



e Calyx 15-veined. Stamens exscrted, divergent IIyssopus. 12 



o Calyx 10-veined, tlio veins obscured by hairs. Cor. yellow, fringed Collinsonia. 11 



O Calyx 10 to 13-veined, — throat naked.— -Stamens straight, divergent. . Pycnantiikmu.-u. Hi 



— Stamens ascending, anth. spurless.. Satire.! a. 14 

 — Stamens ascending, anth. spurred. Diceiianpra. 15 



— throat hairy — Bracts roundish, largo Origanum. 16 



— Bracts narrow, minute Thymus. 17 



f Tube of the corolla straight. Leaves small, subcrenate or entire. Calamintiia. 18 



f Tube of the corolla curved upwards. Leaves large, coarse-crcnate Melissa. 19 



IT. MONAKDE^E. — Connectile long, transverse, distancing the anther cells Salvia. 20 



— Connectile continuous with fll. toothed at the juncture.. ..ROSMARINUS. 21 



— Connectile inconspicuous.— Calyx subequally toothed MonaRDA. 22 



—Calyx bilabiate, .instate BlxriiYCLIA. 23 



V. NEPETEJE. — Stamens distant, exserted. Flowers in terminal spikes Lopiiantiius. 24 



— Stamens all ascending. — Anther cells divergent, much : N'kpeta. 26 



— Anther cells divergent, little. . .DKArocK.piiAi r>i. 26 



— Anther cells parallel. Fls. large. . .C'f:m:oM.i.i.A. 27 



TL 6TACIIYDEJ3.— (Stamens parallel, ascending. Cor. upper lip galeate. Cal. 5 to !()-veine<L) 



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



