LABIATE. 275 



9. TRICHOSTEMA. Linn. 



Calyx resupinale. Upper lip of the corpl falcate. Stamens 

 very long and incurved. Didynamia. Gymnospermia. 



1. T. dlchotoma-Linu. : leaves rhombic-lanceolate, pubescent; sta- 

 mens very long. 



HAB. Dry hills. N. Y. to Geor. W. to Miss, June Aug. 0. 

 Stem 6 10 inches high. Floicers blue, in dichotomous panicles. 



Blue Curls. 



2. T. linearis Walt. : stem viscidly pubescent ; leaves linear-smooth, 

 sessile, acute at each end ; teeth of the calyx awned ; stamens very 

 long. T. dichotoma var. linearis Pursh. 



HAB. Sandy fields. N. J. to Car. June Sept. 0.~Resem- 

 bles the fortner inhabit, but is smaller. It is considered distinct 

 by Nuttall and Elliott. 



10. COLLINSONIA. Linn. 



Calyx bilabiate, 3-toothed above, bifid below. Corol much 

 longer than- the ealyx, somewhat funnel-form, uneoually 5- 

 lobed ; lower lobe longer and fimbriate. Stamens 2 4. 



Diandria. Monogynia. 



C. canadensis Linn. : leaves broad-cordate-ovate, glabrous ; teeth 

 of the calyx s,hort', subulate ; panicle teAninal, compound. 



HAB. Woods. Can. to Car. July Sept. U.-^Stem 23 feet 

 high, smooth, 4-sided. Leaves opposite, large, acuminate, tooth- 

 ed. Flowers large, yellow. Horse Weed. 

 ' . :' - ". .3 &*&&^s&W**. /'I'- rf 



DlV. IV. MONARDE.E. 

 11 . MONARDA. Linn. 



Calyx '5-toothed, cylindric, striate. Corol ringenf, with a 

 long cylindric tube ; upper lip linear, nearly straight and en- 

 tire, involving the filaments ; lower lip reflexecr, broader, 3- 

 lobed, the middle lobe longer. Diandria. Monogynia. 



* Calyx with 5 equal teeth. Flowers in heads. MONARDA. Raf. 

 1. M. didyma Linn.: nearly smooth; stem acute-angled, smooth; 

 leaves broad-ovate .or oblong, sometimes cordate, acuminate, mucro- 

 nate, serrate, rugose, on hairy petioles, midrib and veins hairy beneath; 

 heads of flowers large, often proliferous ; bracts oblgng, acuminate, 

 nearly entire, coloured ; calyx somewhat pubescent ; corol large, pu- 

 bescent. M. purpurea Lam. M. coccinea Mich. M- Italmiana Pursk. 

 HAB. Swamps. Can. to Car. July, . Aug. If. Stem 2 3 

 feet high, simple or branched at the top. Leaves varying from 

 lanceolate to broad-ovate, sometimes attenuate at base, some- 

 times subcordate. Flowers scarlet or crimson, in large heads 

 which are sometimes proliferous. This species, like most of 



