232 



WEEDS AXD USEFUL PLANTS. 



4. HEDEO'MA, Pers. Penxykoyal. 



[Greek, Hedeia Osme, a pleasant odor ; from its fragrance.] 



Calyx ovoid-tubular, gibbous on the under side near the base, IS-nerved, 

 bilabiate, — the upper lip 3-toothed — ^lower one bifid ; throat villous. 

 Corolla bilabiate, — the upper lip erect, flat— lower lip spreading, 3-lobed, 

 lobes nearly equal. Stamens 2, ascending, the two upper entirely want- 

 ing, — or rudimentary and sterile. Herbs with small leaves and loose ax- 

 illary clusters of flowers, often forming terminal leafy racemes. 

 1. H. pulegioi'des, Pers. Leaves lance-ovate, rather obtuse, subserrate, 

 narrowed at base, petiolate ; cj mules about 3-flowered. 

 PuLEGiUM-LiKE Hedeoma. American-Fennyroyal . 



Mrxit annual. Stem 6-12 inches bigli, hoary-pnbescent, branched. Leaves half an inch 

 to an inch long, slightlj^ pubescent, narrowed at base to a pubescent petiole one-eighth to 

 half an inch in length, — the floral leaves resembling the cauline ones. Cymules usually 

 3-flowered; bracteoles hnear-lanceolate, scarcely as long as the pedicels. Co raZto pale 

 blue, with purple spots. Stamens scarcely exsertea, ascending, the anthers approximated 

 under the upper lip, — the upper pair of stamens reduced to mere abortive rudmients. 



Slaty soils, old fields, &:c. : throughout the United States. Fl. July- August. Fr. 

 September. 



Obs. A warmly aromatic little herb, — in general use as a popular dia- 

 phoretic, carminative, &c., and therefore entitled to a description by 

 which it may be certainly recognized. This is not the " Pennyroyal" of 

 Europe ; but has been so called because of its resemblance to that 

 plant, — which is a species of Mint — viz., the Mentha Pulegium, L. 



5. MONAR'DA, L. Horse-mixt. 



[Dedicated to Xicholas Monardez, a Spanish Botanist.] 



Calyx tubular, elongated, 15-nerved, nearly equally 5-toothed ; throat 

 usually hairy. Corolla with a slightly expanded throat, and a strong- 

 ly 2-lipped limb ; upper Up entire, or slightly notched, erect, embracing 

 the filaments ; loicer lip spreading, 3-lobed, the middle lobe narrowest 

 and slightly notched. Stamens 2, elongated, ascending, inserted in the 

 throat of the corolla ; anthers linear, the divaricate cells confluent at 

 the junction. Flowers large in a few whorled heads closely surrounded 

 with bracts. 



1. M. did'yina, L. Leaves ovate-lanceolate, acuminate, mostly rounded 

 or somewhat heart-shaped at base, the floral ones and large exterior 

 bracts purjDlish : calyx smooth, incurved, nearly naked in the throat ; 

 corolla smooth, much elongated, bright red : stamens exserted beyond 

 the acute upper lip of the corolla. 

 Oswego Tea. Bee Balm. 



Root perennial. Stem 1-2 feet high, 4-angled, branching, somewhat hairy. Leaves 3- 

 5 inches long and 1-2 inches wide, somewhat hairy on both sides, especially on the veins 

 below ; petioles half an inch long. Floioers in 1- 2 (rarely 3) whorls ; corolla an inch and 

 a half long. 



New England , West and South. July - August. 



