274 DICOTYLEDONOUS. PLANTS. 



6. ORIGANUM, Linn. 



Flowers collected into a 4-sided cone or dense spike. Up- 

 per lip of the corol erect, flat, emarginate ; lower 3-parted. 



Didynamia. Gymnospermia. 



0. vulgarc Linn.: spikes roundish, panicled, clustered, smooth; 

 bracts ovate, longer than the calyx ; leaves ovate, entire. * .,[ 



HAB. Rocky fields. N. S. July Sept. U-- Stems 812 

 inches high, hairy. Flowers .purplish, in numerous small spikes, 

 which are crowded together so as to form a terminal" head. 



Marjoram. 



7. HYSSOPUS. Linn. 



Lower lip of the corol 3-parted ; middle lobe subcrenate. 

 Stamens straight and distant. Didynamia. Gymnospermia. 



1. H. nepetoides Linn. : spike formed of whorls, cylindrical ; leaves 

 opposite, subcordate, ovate, acuminate, toothed ; stales shorter than 

 the corpL 



HAB. Woods. N. Y. to Virg. W. to Miss. July. Z. Stem 

 36 feet high, pubescent. Flowers small, yellowish- white or 

 pale purple. Calyx smooth, segments linear. Bracts dilated. 



. 2. H. scrophularifolius Linn. : spike formed of whorls, cylindrical ; 

 leaves cordate, ovate, acuminate, obtusely toothed; styles longer than 

 the corol. 



HAB. Wet woods. Penn. to Virg. W. to 111. July, Aug. .If. 

 Stem 2 feet high. Flowers plirple. Calyx smooth, segments 

 subovate. Bracts ovate. Closely resembles the former, but 

 most probably distinct. 



Div. IH. AJUGOIDEJE. 



8. TEUCRIUM. Linn. 



.Upper lip of the corol short, 2-parted ; the lower one 3- 

 lobed, the middle lobe the largest. Stamens projecting through 

 the cleft in the upper lip. Didynamia. Gymnospermia. 



1. T. canadense Linn. : hoary-pubescent ; leaves 'ovate-lanceolate, 

 serrate, all petiolate ; spike whorled, crowded, long ; bracts longer 

 than the calyx. ^ l' 



HAB. Low grounds. Can. to Car. W. to Miss. July, Aug. 21. 

 Stem 1218 inches high, erect. Flowers purple, in a terminal 

 whorled spike. Wild Germander. 



2. T. virginicum Linn. : pubescent ; leaves ovate-oblong, serrate ; 

 the upper ones subsessile ; spikes whorled, crowded ; bracts as^long as 

 the calyx. 



HAB. Low grounds. N. Y. to Car. W. to Miss. Aug. H 

 Resembles the preceding and is not perhaps specifically distinct. 



