LAMIACEAE, 



245 



cm. long: calyx 3-5 mm. long, accrescent; tube ribbed, little longer than the 

 slender upper lobes during anthesis: corolla white and magenta-tinged, about 

 8 mm. long: achenes -±-5 mm. long. — Common, in woods and thickets. — 

 Sum. — • LoPSEED. 



Family 9. LAMIACEAE. Mint Family. 



Herbs or woody plants, often aromatic. Stems 4-sided. Leaves op- 

 posite or w'horled : blades simple, entire, toothed, or lobed. Flowers per- 

 fect, in open or compact cymes. Cah'x of 5 partly united sepals, regular 

 or 2-lipped. Corolla of 5 partly united petals, 2-lipped or nearly regular. 

 Androecium of 2 or 4 stamens, the pairs often unequal. Gynoecium 2- 

 earjDellary. Ovary 4-celled. Fruit of 4 nutlets included in the calyx. 



Ovary of 2 united carpels, 4-Iobed : style not basal : nutlets laterally attached. 

 Corolla very irregular ; limb nearly 1-lipped, the upper lip very short. 



1. Teuceium. 

 Corolla nearly regular or slightly 2-lipped, the lobes 

 nearly equal. 

 Calyx nearly regular : stamens only slightly exserted, 



nearly equal. 2. Isanthus. 



Calyx decidedly 2-lipped : stamens conspicuously ex- 

 serted, didynamous. 3. Trichostema. 

 Ovary of 4 distinct or nearly distinct carpellary lobes : style 

 basal : nutlets basally attached. 

 Calyx with a crest on the upper side or on the upper lip : 



lips 2, entire. 

 Calyx without a crest on the upper side : lips not entire. 

 Stamens included. 



Anther-sacs divergent. 

 Anther-sacs contiguous and confluent. 

 Stamens exserted. 



Corolla conspicuously 2-lipped ; lips different, the 

 upper concave. 

 Anther-bearing stamens 4. 



Upper pair of filaments longer than the 

 lower. 

 Anther-sacs parallel or nearly so. 

 Anther-sacs diverging. 



Calyx l)arely 2-lipped, with 5 nearly 



equal lobes : erect herbs. 

 Calyx 2-lipped. with unequal lobes : 

 trailing herbs. 

 Upper pair of filaments shorter than the 

 lower. 

 Calyx manifestly 2-lipped. 

 Calyx merely with 3-10 lobes. 



Tube of the calyx faintly nerved, 



inflated at matiu'ity. 

 Tube of the calyx prominently o-lO- 

 nerved, not inflated at maturity. 

 Nutlets 3-sided, truncate above. 



Calyx-lobes not spine-tipped. 12. Lamidji. 

 Calyx-lobes spine-tipped. 13. Leonueus. 



Nutlets nearly terete, rounded 

 above. 

 Anther-bearing stamens 2. 



Connective of the anther elongate, bearing a 

 perfect sac at one end and a rudimen- 

 tary one at the other. 

 Connective short : anther-sacs confluent. 

 Corolla regular, or if 2-lipped, the upper lip flat 

 or not concave. 

 Flowers in axillary whorls or clusters ; these 

 sometimes forming terminal spike-like ra- 

 cemes or panicles. 

 Corolla 2-lipped. 



Filaments curved, converging under the 

 upper lip of the corolla. 

 Anther-bearing stamens 2. 17. Hedeoma. 



Anther-bearing stamens 4. 



Corolla-tube strongly bent. 18. Melissa. 



4. Scutellaria. 



SiDERITIS. 



Mabeubidm. 



Agastache. 



8. Nepeta. 



9. Glecoma. 



10. Peunella. 



11. Deacocepiialum. 



14. Stachys. 



15. Salvia. 



16. MONAEDA. 



