272 FLORA OF PHILADELPHIA. 



6. Verbena bracteosa Michx. M. p. 778. Waste places. Summer. 



Philadelphia — Greenwich Point (Te.). Lancaster — Benton Station, 

 very rare (Ca.), Susquehanna River (Pr.). 



Canidoi— Kaighn 's Point, E. Difenbaugh (B. G.) (Ja.). 



2. LIPPIA L. 

 1. LiPPiA LANCEOLATA Michx. FoQ-fruit. M. p. 779. Moist soil. Summer. 

 Philadelphia — Philadelphia Navy Yard, 7. Burk (Fu.). Lancaster — 

 York Furnace, Peach Bottom (Pr.). DawpMn— Above Harrisburg (Wn.). 

 Camden — Ballast (C). Cape May — Wildwood, Anglesea. 



Family 7. LABIATAE B Juss. Mint Family. 



Ovary 4-lobed, the style not basal; the nutlets laterally attached. 



Corolla-limb very irregular, apparently 1-lipped, or the other lip short ; 



stamens exserted. 1. Teucrium. 



Corolla-limb nearly equally 5-lobed. , 



Corolla-lobes spreading; stamens short-exserted. 2. Isanthus. 

 Corolla-lobes declined ; stamens long-exserted. 3. Trichostema. 



Ovary 4-parted, the style basal ; nutlets basally attached. 



Calyx with a protuberance on the upper side. 4. Scutellaria. 



Calyx not gibbous on the upper side. 



Stamens and style very short, included in the corolla-tube. 



5. Marrubium. 

 Stamens longer, not included in the corolla-tube. 



*Corolla strongly ^-lipped; lips unlike, the upper concave. 

 ■fA7ither-bearing stamens 4. 

 Posterior (upper) pair of stamens longer than the anterior. 



Anther-sacs parallel or nearly so. 6. Agastache. 



Anther-sacs divergent. 



Calyx tubular, nearly equally 5-toothed, not 2-lipped ; plant 



erect. 7. Nepeta. 



Calyx distinctly 2-lipped, or unequally 5-toothed. 



8. Glechoma. 

 Posterior pair of stamens shorter than the anterior. 



Calyx distinctly 2-lipped, closed in fruit. 9. Prunella. 



Calyx 3-10-toothed, not distinctly 2-lipped, open in fruit. 

 Calyx membranous, inflated in fruit, faintly nerved. 



10. Physostegia. 

 Calyx not membranous, not inflated in fruit, distinctly 5-10- 

 nerved. 

 Anther-sacs transversely 2-valved. 11. Galeopsis. 



Anther-sacs not transversely 2-valved, parallel or divergent. 

 Nutlets 3-sided, truncate. 



Calyx-teeth spiny-tipped. 12. Leonurus. 



Calyx-teeth not spiny-tipped. 13. Lamium. 

 Nutlets ovoid, rounded above. 



Calyx with a spreading 5-toothed limb. 



14. Ballota. 

 Calyx-limb not spreading. 15. Stachys. 



\-\Anther-bearing stamens 2. 

 Connective of the anther very long, bearing a perfect sac at one end 



and a rudimentary one, or none, at the other. 16. Salvia. 



Connective very short, the anther-sacs confluent. 



Calyx tubular, 15-nerved, equally 5-toothed. 17. Monarda. 



Calyx ovoid-tubular, 13-nerved, 2-lipped. 18. Blephilin. 



