2 6 DTANDRTA. MONOGTSTIA. 



ihe length of the corolla. Stigma unequally 

 bifid. Seeds 4. 



Flowers sometimes axillary, mostly in terminal dicho- 

 tomous corymbs. Leaves opposite, punctate. Bractes in- 

 coiispicaous. 



Species. 1. C. ynariana. An American genus; growing 

 chiefly in rocky, and, to the south, in moiuitainous situa- 

 tions The second species of this genus, the Ccapitataoi 

 Vah;, -n-tre prob;'.bly belongs to Ziziphora. Tlie common 

 generic remark, of the calix being villous at the faux, is 

 scarcely vvorth irpeating, so many different genera hav- 

 ing ihe same ch\-acter; for example, the Hi'deoma, Zizi- 

 phora, Thijmus, and Calamintha. 



23. HEDEOMA. Persoon. (Wild Pennyroyal.) 

 Caiix biiabiate, t^ibboiis at the base, upper 

 lip 3-tootbc(], lower 2; dentures all subulate. 

 Corolla ring;'nt. Stamina 2-sterile. The 2 fer- 

 tile stamens abtnit the length of the corolla. 



Small herbaceous plants possessing the scent of the 

 .Mentha Pulerhim. Leaves opp')Site; flowers veirticiUate, 

 bractcate; calix internaliy ciliHte-vlllous at the btise of 

 the calvcine indentions. (An American genus, with the 

 excepuon of the H. t/.vmoides of Monipelier.)f 



J Species- 1. //. ^/a6ra. Perennial, smooth; stem surculose; 

 radical leaves nearly oval, stem leaves oblong-linear, obtuse, all 

 entire and without veins; flowers upon longish peduncles, bi- 

 bracteate at the base, towards the upper part of the stem mocjt- 

 ly verticillate in 3s- 



Obs. Stem six Inches to a foot high, acutely angular, branch- 

 ing from below; leaves nearly obtuse, conspicuously beset with 

 diaphanous glands, entirely smooth, without veins, and closely 

 sessile. Flowers rather large, violet purple, somewhat campa- 

 nulate and ring^nt; infertile stamens very short; calyx subcy- 

 lindric oblong, internally ciliate at the faux. 



Hab. Principally upon the banks of the St. Lawrence and 

 the upper lakes; at the falls of Niagara: on the Ohio and in 

 Ten!>essee; — alxvays on calcareous rocks. 



2. Pulegioiiles. Pubescent; leaves oblong-lanceolate, ser- 

 rate, veined; verticilli many-flowered; flowers smaller than the 

 calix. From Canada to Carolina. O 



3. * hirta. Dwarf, and branching near the base, pubescent; 

 leaves linear sub-lanceolate, acutish at both extremities, entire^ 



