•'^44: * LABIATE. (mint FAMILY.) 



namely, the short teeth of the ealyx upward, &c. Corolla blue, varyinj^ to pur 

 nle, rarely white, sm:Ul ; in summer and autumn. (Name composed of Of>i^, 

 hair, luiil orrj^a, slumrii, from the capillary filaments.) 



1. T. dichbtomum, L. (Rastakd Pexnyroyai,.) Lmirs lance-Monrj 

 or r/ioinliic-laiicco/(ite, rarely lance-linear, short-petiolcd. — Sandy fields. New 

 England to Kcntueky, and southward, chiefly eastward. — Stamens ^' long. 

 Corolla blue : a j)ink variety near Hartford, Conn., C. II. Olmstaul. 



2. T. line^re, Nutt. Z/«'^«w-i; ///im/-, nearly smooth. — Sandy pine barrens 

 of New JersL-y, and southward. — More slender and less forked than the last. 



3. ISANTHUS, Michx. False Tj-nnyroyal. 



Calyx bcll-slinped, 5-lobed, equal, enlarged in fruit. Corolla little longer than 

 the calyx ; the border bell-shaped, with 5 nearly e<jual and obovate spreading 

 lobes. Stamens 4, slightly didynamous, iiieurved-aseending, scarcely exceeding 

 the corolla. — A low, much branched annual, clammy-pubescent, with nearly en- 

 tire lance-oblong 3-nerved leaves, and small pale blue flowers on axillary 1-3- 

 flowered peduncles. (Name from lo-oj, equal, and avQoSt flower, referring to the 

 almost regular corolla.) 



I. I. CSeruleus, Michx. — Gravelly banks and fields, Maine to Illinois, and 

 southward. July, Aug. — Corolla 2" long. 



4. MENTHA, 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 upjier 

 lobe broadest, entire or notched. Stamens 4, equal, erect, distant. — Odorous 

 perennial herbs, with the small flowers mostly in close clusters, forming axil- 

 lary capitate whorls, sometimes approximated in interrupted spikes ; produced 

 in summer ; of two sorts as to the length of the stamens in most species. 

 Corolla pale ])urple or whitish. (MtV^r; of Theophrastus, from a Nymph of that 

 name, fabled to have been changed into Mint by the jealous Proserpine.) 

 * Inflorescence terminal, fljrming narrow spikes: hares sessile or nearly so. 



1. M. rotuxdif6lia, L. (Rodnd-leaved Mint.) ASo/J-Zia/V^ or downy ; 

 leaves ronml-ovate and somewhat heart-shaped, rugose, crenate-toothed. — Wet 

 places, Maine, .7. Blake, New Jersey and Penn., Porter. (Adv. from Eu.) 



2. M. vfRiDis, L. (Spearmint.) Nearly smooth; leaves olilonij- or oiate- 

 lanceolate, unequally serrate. — Wet places : common. (Nat. from Eu.) 



* * Inflorescence mostly terminal, fl:irmiii(] interrupted spikes or heads : leaves pctioled. 



3. M. piperita, L. (Peppermint.) 5moo//t,- leaves ovate-oblong, acute; 

 spikes loose. — Var. sitbiiirsuta, Benth., has the petioles, veins of the leaves, 

 &c. rather hairy. — Low grounds, and along brooks : less naturalized than the 

 last; and like it multiplying rapidly by running under-grouiul shoots. (Nat. 

 from Eu.) 



4. M. aquAtica, L. (Water Mint.) Puhesceiit or smoothisli ; leaves 

 ovifte or round-ovate ; flowers in a terminal (jlohutar or interrupted and oblong 

 head, often with one or more clusters in the axils of the uppei leaves ; calyx and 



