384 LABIATE. (MINT FAMILY.) 



calyx teeth lanceolate-subulate ; corulla small, white. Waste grounds. In- 

 troduced. Stem 2 - 3 high. 



2. N. Glechoma, Beuth. Stem prostrate or creeping, pubescent ; leaves 

 round-cordate, obtuse, serrate ; whorls in nearly all the axils, few-flowered ; 

 corolla blue. Low shady places, near dwellings. Introduced. Stem 4' - 12" 

 long. Leaves '- 1' long. Anthers forming a cross. 



20. CEDRONELLA, Mceuch. 



Calyx bell-shaped, nearly equally 5-toothed ; the mouth oblique. Corolla 

 dilated at the throat, 2-lipped ; the upper lip straight, 2-cleft, the lower 3-cleft, 

 with the middle lobe largest Stamens 4, ascending, the upper pair longest : 

 anther cells parallel. Nutlets smooth. Flowers in a terminal spike or 

 raceme. 



1. C. COrdata, Beuth. Stern low, pubescent, stolouiferous ; leaves loug- 

 petioled, cordate, creuate, smoothish ; the floral ones ovate; raceme few- 

 flowered, 1-sided ; cymes 1 -3-ttowered ; calyx and pale blue corolla large. 

 Shady banks, on the mountains of North Carolina. May -June. Stem 6' 

 high, creeping at the base. Leaves 1' long. Corolla l' long. Plant pleas- 

 ant-scented. 



21. BRUNELLA, Tourn. SELF-HEAL. 



Calyx tubular-bell-shaped, 10-nerved, 2-lipped ; upper lip broad, truncated, 

 3-toothed, the lower 2-cleft. Corolla 2-lipped ; the upper lip roundish, entire, 

 the lower 3-lobed, with the middle lobe rounded, concave, crenate. Stamens 4, 

 exserted, the smooth filament prolonged above the anther : anther cells spread- 

 ing. Herbs, with 6-flowered densely -spiked whorls. Floral leaves orbicular, 

 imbricated, persistent. 



1 . B. vulgaris, L. Pubescent or smoothish ; stem erect, mostly simple ; 

 leaves ovate or oblong, serrate, petioled ; spikes oblong or cylindrical; flowers 

 purple. Low grounds. Introduced. Stem 6' -12' high. Spikes thick, 

 lateral and terminal. 



22. SCUTELLARIA, L. SKULLCAP. 



Calyx bell-shaped, 2-lipped, entire and closed after flowering ; the upper 

 lip furnished with a helmet-shaped appendage on the back, and falling away 

 at maturity, the lower persistent. Corolla-tube dilated at the throat, 2-lipped ; 

 the upper lip arching, with the small lateral lobes united with its sides, the 

 lowest lobe large and spreading. Stamens 4, ascending : anthers ciliate, ap- 

 proximate by pairs, those on the shorter filaments 1 -celled, on the longer ones 

 2-celled, cordate. Perennial mostly inodorous herbs. Flowers opposite, 

 solitarv, in the axils of the upper, mostly bract-like leaves, rarely in lateral 

 racemes. Corolla blue or white. 



* Flowers in terminal racemes. 



-t- Leaves cordate, ovate, or oblong, crenate, petioled ; the floral ones shorter than 



the flowers, entire. 



1. S. versicolor, Xutt. Softly pubescent; stem stout, branched above ; 

 leaves large, long-petioled, all broadly cordate, rugose and reticulate; the 



