256 LABIATE. 



Stent square, jubescent, branching. 2 to 3 feet high. Flouert numerous, -white cr 

 purplish, tbe lower Up dotted with crimson. 



Sec. 2. Giuchoma, L- Axillary dusters loosely fruhflowe red. 



2. N. Gleghoma, Benth. Ground Try. 



Creeping and trailing: leaves petioled, round-kidney-shaped, crenste; c - 

 al out 3 times as long as the calyx. 



Waste grounds, in {-haded place?, perfectly naturalized. May— Aug. Stems 

 prostrate, from a few inches to 1 to 2 feet loDg. Flowers axillary in 3s. Corolla 

 bluish-purple, with a variegated ihroat. Anthersvrilh the ceLs diverging at a right: 

 angle, each pair approximate and forming a cross. 



13. DRACOCEPHALUM, Linn. Dragon-iieai>. 



Gr. drakon, a dragon, and l-;r,/iah. Lea J: alluding to the form of the corolla. 



Calyx tabula?, lo to 15-nerved, 5-toothed, the upper 

 tooth much largest Coroela dilated in the throat, 2-lipped ; 

 upper lip slightly arched and notched ; the lower spreading, 

 3 -cleft, the middle lofce much larger, rounded or 2-cleft. 

 Stamens 4, ascending under tie upper lip- — Whorls 6f 

 flowers mostly spiked or capitate, and usually subtended with 

 large conspicuous bracts. 



D. PARVIFEORUM, Nutt. Small-flowered Dragon head. 



Sub-pubescent: stem erect, some-That branched, leafy: leaves ovate-lane 

 ?1 arply cut-toothed, petioled": whorl* crowded in » terminal globular or 

 capitate spike ; .bract leafy, ovate, fringed ; biennial. 



Reeky places, and gravelly rf ores, along the Susquehanna. May — Aug- Sfr» 

 8 to "20 inches high, obtusely 4-nngled. Upper onyx-teeth nearly as long as the co- 

 rolla. Corolla bluish-purple; the upper Up arched, emargiuate, central lobe cf the 

 lower lip creiiate. 



14. LOPHANTHUS, Benth. Giant Hyssup. 



Gr. lophos, a crest, and anthos, a flower. 



Caeyy tubular-bell-sbaped, 15-nerved, oblique, 5-toothed, 

 the upper tooth rather longer than the others. Coroela 

 3-lipped ; ippcr lip nearly erect, notched j the lower some- 

 what spreading, 3- cleft, with the middle lobe broader and 

 crenate. Stamens 4, exserted; tbe upper pair declined: 

 the lower ascending, shortest ! — Perennial upright herbs, with 

 petioled serrate leaves, and small flowers crowded in terminal 

 spikts, 



1. L. nepetoides, Benth. Yellow Giant Eyssnp. 



Smooth or nearly so; haves ovate, somewhat pointed: calyx-iedh ovate, rathei 

 obtuse, litfle shwtc-r than the corolla. 



Borders of woods. Aug: Stem stout, smooth^ quadrangular. 4 to 6 feet high. 

 leaves 2 to 4 inches long, coarsely crenate-toothed. Fb.tvtrs small, greenish-} «l 

 low, in cylindrical t pikes 2 to 4 inches long, crowded with ovate-pointed bracts. 



