LABIATE. 



270 



A large and important order of herbs (rarely shrubby), with square stems and opposite, 

 exstipulate leaves, abounding in receptacles of aromatic oil. Flowers in axillarj' or 

 terminal verticillasters, almost always of the cyanic series, white, blue, red, &c. Tlie 

 species are chiefly natives of temperate regions, being most abundant between latitudes 

 4U^ and 50° of tlie northern hemisphere. 



Propfrlifs. This well known family is universally per\-aded by an aromatic, -volatile oil 

 and a bitter principle ; the former rendering them eminently tonic, cordial and stomachic : 

 the latter, where it prevails, febrifugal. The pennyroyal, lavetuler, sage, hoarhound, thyme, 

 spearmint, peppermint, horseinint, rosemary, Ifc, Ifc. plants whose qualilies are too well 

 known to require particular mention here, are all members of this usel'ul family. Kot one 

 species is poisonous or even suspicious. 



Conspectus of the Genera. 



* Flowers diandroiis. 



I Bracts whitish. Blephilia. 7 



J Cor. blue. I Bract.s green. Hedeoma. IS 



( Connectile erect, short. I Corolla yellow. CoUinsonia. 10 



C bilabiate. ( Conneetile transverse, long; anthers dimidiate. . Salvia. 8 



1 1 Herbs. . Cunila. 17 



Corolla ( Upper lip emarginate. | Slirubs. . Ro.vnarimu. 9 



I bihibiate. . \ Upper lip linear, embracing the fil. . Monarda. 6 



Calyx [subequal. ( Corolla subregular, 4-lobed Lycopus. 5 



* * Flowers didynamous. 



2 ( Lips of ca- ( Filaments simple. . Melissa. i20 



^ (Stamens 5 lyx toothed. | Filaments forked. . Prmulla. 2-2 



r:: f Tube of corol- ] ascending ( Lips of the calyx entire. . . . Scutellaria. 21 



"^ J la exserted. . ( Stamens very long, arching the 5-cleft limb of cor. Trichostema. 33 



-g ] "■ 1 Stamens scarcely exsert. Thymits. 13 



O I. Tube of the cor. scarcely longer than cal. I Stamens exserted. . Majorana. 12 



( Cal. 15- I equal. Hyssoptis. 15 



S f Flowers J nerved, i oblique. I.o;7/ia;iM!<j. 25 



a f Bracts ] sjiicate. ( Calyx lO-nerved. Satureja. 14 

 S C Corolla I green. ..( Fls. capitate, involucrate. Pycnantkemum. W 



_ of Stamens J bilabiate. . . ' Bracts colored Origanum. 11 



erect or 1 Corolla limb of 4 subequal lobes, one of them emarg. .fl/p/jMa. 3 



divergent \ Corolla limb of 5 equal lobes. .... Isanthus. 4 



f Anth.not ( Calyx .5-nerved. Lamium. 27 



( Leaves < cruciate ( Calyx 15-nerved. Nepeta. 23 



I crenate. ( Anthers forming 2 crosses. Glechoma. 24 



C included \ I Plants glabrous. Physostegia. 26 



Stamens J beneath the I Lvs sharply serrate ( Plants hairy. . Ballota. 32 



ascend- ] upper lip. . ( Lvs. entire, lance-linear and elliptic. Micromeria. 1!) 



ing and [ exserted through the fissure of the upper lip of cor. Teunimn. 34 



I Upper lip of the corolla 2-lobed. . Lavendtda. 2 



Stamens declinate. . . . ( Upper lip of the corolla 4-cleft. . Orimiim. 1 



Leaves un- i Lowerlipof the cor. with 2 lateral teeth. Grtfeo;;^/,?. 29 



the teeth ] divided. . . | Low. lip of cor. with lateral lobes reflexed. 67afAyi. 30 



spinescent. . . ' Leaves mostly 3-lobed I^onuriis. 2^ 



Calyx 10-toothed, the alternate teeth shorter Marrubium. 31 



Tribe 1. OCIMOIDE.E.'* 



Corolla subbilabiate, the 4 vpper lobes nearly equal, the lower one declinate, flat or concave, carinate 

 or saccate. Stamens 4, declined. 



E 



1. O'CIMUM. 



Upper lip of calyx orbicular, lower 4-fid ; corolla re&.upi- 

 nate, one lip 4-cl('ft, the other undivided ; exterior filaments 

 with a process at their base. 



Gr. o^ci)^ to smell ; on account of the powerful scent of the plants. 



* In distributing our genera of this order into Trihes, as well as in their nomenclature, 

 1 have mostly conformed to llie views of Mr Bentliam, as expressed in his elaborate and 

 excellent work on the I/al)iat;e. This arrangement will greatly' aid the student in his 

 lesearchesj wherever he may lind the Ibregoing conspectus insuihcicnt. 



