LABIATE. (MINT FAMILY.) 303 



axillary 1 -3-flowered peduncles. (Name from terop, equal, and avdos, flower, 

 referring to the almost regular corolla.) 



1. I. cseruleus, Michx. Gravelly banks, Maine to Illinois, and south- 

 ward. July, Aug. Corolla 2" long. 



4. IflENTHA, L. MINT. 



Calyx bell-shaped or tubular, 5-toothed, equal or nearly so. Corolla with a 

 short included tube ; the bell-shaped border somewhat equally 4-cleft ; the upper 

 lobe broadest, entire or notched at the apex. Stamens 4, equal, erect, distant 

 (either exserted or included in different individuals of the same species). Odor- 

 ous herbs, with the small flowers mostly in close clusters, forming axillary capi- 

 tate whorls, sometimes approximated in interrupted spikes. Corolla pale purple 

 or whitish. (MtWfy of Theophrastus, from a Nymph of that name, fabled to 

 have been changed into Mint by the jealous Proserpine.) 



1. M. vfRiDis, L. (SPEARMINT.) Nearly smooth; leaves almost sessile, 

 ovate-lanceolate, unequally serrate ; whorls of flowers approximate in loose pani- 

 cled spikes. 1J. Wet places ; common. (Nat. from Eu.) 



2. I?I. PIPER!TA, L. (PEPPERMINT.) Smooth leaves petioled, ovate-obloru/, 

 acute, serrate ; whorls crowded in short obtuse spikes, interrupted at the base, ty 

 Low grounds, and along brooks : less naturalized than the last. Aug. Mul- 

 tiplying, like the Spearmint, by running under-ground shoots. (Nat. from Eu.) 



3. ME. ARVENSIS, L. (CORN MINT.) Stem fairy downwards; leaves peti- 

 oled, ovate or oblong, serrate ; the floral similar and longer than the globose 

 remote whorls of flowers. 1J. Fields, Penn. and Ohio : rare. Odor like 

 that of decayed cheese. (Adv. from Eu.) 



4. M. Canadensis, L. (WILD MINT.) Stems ascending (l-2 

 high), whitish-hairy; leaves petioled, oblong, tapering to both ends, the upper- 

 most lanceolate ; flowers crowded in globular axillary whorls. (Odor like Penny- 

 royal). Var. GLABRATA, Benth., is smoothish, the leaves usually less tapering 

 at the base, "the smell pleasanter, more like that of Monarda" (Porter}. (M. 

 borealis, Michx.) Ij. Wet banks of brooks, New England to Kentucky, and 

 northward. July -Sept. 



5. LiYCOPUS, L. WATER HOREHODND. 



Calyx ,bell-shaped, 4 - 5-toothed, naked in the throat. Corolla bell-shaped, 

 scarcely longer than the calyx, nearly equally 4-lobed. Stamens 2, distant ; the 

 upper pair either sterile rudiments or wanting. Nutlets with thickened mar- 

 gins. Perennial low herbs, resembling Mints, with sharply toothed or pin- 

 natifid leaves, the floral ones similar and much longer than the dense axillary 

 whorls of small mostly white flowers. (Name compounded of \VKOS, a wolf, and 

 TTOWS, foot, from some fancied likeness in the leaves.) 



1. L.. Virginicus, L. (BUGLE-WEED.) Stem obtusely 4-angled (6'- 

 18' high), producing long and slender runners from the base ; leaves oblong or 

 ovate-lanceolate, toothed, entire towards the base, short-petioled ; calyx-teeth 4, 



