344 Tldlia Pycnanthemo'ides. 



Folia subdistantia, opposite, petiolata ; petiolis marginibusque ci- 

 liatis ; lamina ovata, acuminata, basi attenuata, remote dentata, supra 

 canescens, infra glaucescens. 



Inflorescentia fasciculus spicarum secundarum axillaris, termin- 

 alisque ; spicse (externa facie) primo uniflorse, postea productse, et 

 serie continuata, flores novos alternos confertos unibracteatos, produ- 

 centes ad extremum pedunculorum ; bracteis subulatis, longitudine 

 calycis absque appendiculis deniium. 



Calyx monosepalus, tubulosus, sabvenlricosus, striatus, bilabiatus; 

 labio superiore tridentalo, inferiore bidentato, paulo breviore ; denti- 

 bus erectis, subulatis (vel sublanceolatis,) subsequalibus, appendicu- 

 latis ; appendiculis penicilliformibus. 



Corolla monopetala ringens; tubo longitudine et forma calycis; 

 labio superiore ovato-oblongiusculo, integerrimo, inferiore Iripartito ; 

 lacinia intermedia longiore, pauloque latiore, margine subundulata. 



Stamina quatuor, exserta, labio superiore paulo longiora, duo 

 breviora ; filaraentis filiformibus, antheris subglobosis. 



Ovaria (externa facie) quatuor, in fundo calycis. 



Caryopsides? (non visffi.) 



CHARACTER GENERICUS ESSENTIALIS. 



Periantliium bilabiatum ; labio superiore tridentato, inferiore bi- 

 dentato ; dentibus appendiculatis ; corolla bilabiata; labio superiore 

 integerrimo, inferiore tripartito ; lacinia media majore. 



This plant was found the 22d of October, 1830, when I was de- 

 scending the Paint Mountain in Eastern Tennessee. It apparently 

 commences flowering in August. When discovered, there were 

 from two to four flowers upon each spike, which were of a delicate 

 pale-rose color spotted with purple. 



It is almost superfluous to state, after the full description which 

 has been given of our plant, that it belongs to the natural order La- 

 biate, which is characterized by didynamous stamens, four caryop- 

 sides commonly called naked seeds, a single style, and an irregular 

 corol. 



From the foregoing description, it will be equally evident that this 

 plant belongs to the Linnasan class, Didynamia, and the order, 

 Gymnospermia, and to that section of the genera which is characteri- 

 zed by a calyx bilabiatus. The characters of the several genera of 

 tliis section (according to Sprengel's edition of the species Planta- 

 rum, which is perhaps the latest,) are as follow. 



