DIDYNAMIA. GYMNOSPERMIA. 67 



M. PIPERITA. Fl. Brit. Leaves subovate,petiolate; spikes obtuse, interrupted below; stamens included. 



Fjt/g^o— Pepper Mint. 



Fl. Middle of August, and after. Fr. mat. Beginning of October. 



Hitb. Along rivulets: low moist grounds: frequent. About two feet high: flowers purple. 



Obs. This, also, is a foreigner; but is gradually becoming naturalized. It is too well known, for its 

 grateful and valuable properties, to require a specification of them here. I may remark, however, that 

 tiie infusion of this, and also of the preceding species, administered cold, in small portions,— say a table 

 spoonful at a time,— is admirably adapted to relieve distressing nausea, and vomiting. 



222. HYSSOPUS. Nutt. Oen. 498. 



[A very ancient name, adopted for this genus: " a voce hebraica Ezob.^' Boerh-1 



CoR. lower lip 3 parted; mtermediate segment subcrenate. Stamens straight, distant. 



H. NEPETOiDEs. Pk. Stem acutely 4 angled, sub- alate: leaves ovate, acutely dentate; petioles smooth 

 Fl. Middle of July, and after. Fr. mat. Last of September. 



Hub. Fence-rows; borders of woods, &c. frequent. 4 to 6 feet high: Howers pale, or greenish yellow- 

 Obs- The styles are often longer than the corolla, in this species, as well as in the following. 



H. scROPHULARiFOLius. Ph. Stem obtusely 4 angled; leaves cordate-ovate, obtusely dentate; petioles 

 Fl. Beginning of August, and after. Fr. mat. Beginning of October, [ciliate-pubescent- 



Hab. Fence-rows; thickets, &c. frequent. 3 to 5 feet high: flowers, and stalks, purple. 



223. NEPETA. Nutt. Gen. 499. 



[Etymology obscure: supposed from Nepete, a city of Etruria; near which it was originally found ] 



Cal. arid, striate. Cor- lower lip crenate; margin of the throat reflected. Stam. approximate. 



N. CAT ARIA. Ell. Hoary-pubescent; leaves cordate, petiolate, dentate-serrate; flowers in whorled spikes. 



Fw/g-o— Cat-mint. Cat-nep. 



Fl. Latter end of June, and after. Fr. mat. Last of August, and after. 



Hab About houses, gardens, fence-rows, &c. common. 2 to 3 feethigh: flowers reddish white. 



Obs. A naturalized foreigner. The infusion of the herb is highly popular, as a remedy for irregularities 

 of the catamenia; and is probably useful. 



224. STACHTS. Nutt. Gen. 503. 



[Gr. Stachys, a spike; in reference to its mode of flowering.] 



Cor. upper lip vaulted; lower lip reflected at the sides, middle segment largCs emarginate. 



S. ASPERA ? Mx. Stem square, angles retrorsely hispid; leaves lance-oblong, obtusely serrate, subpetiolate-. 



Synon. S. hispidal Ell. F«/go— Hedge-nettle. Clown-heal. 



Fl. Latter end of August. Fr- mat. Beginning of October. 



Hab. Erandywine: Jno. Taylor's; Wistar's Bridge: rare. 1 to 2 feethigh: flowers pale reddish purple. 



OhK. I take this to be the S. aspera, of Michaux; and yef it agrees temarkahlj^. in several respects, with 

 theS. /!i«pitZ«, of Pursh and Elliott. The calyx, however, is hispidly pilose, in my specimens. I am sat- 

 isfied it is not the S. aspera, of Mr. Elliott. 



225. LEONURUS. Nutt. Gen. 504. 

 [Gr. Leon, a lion, and Oura, a tail; from a strangely fancied resemblance.] 



Cor. upperlip villous, flat, entire; lower lip 3 parted, middle segment undivided. 

 L. CARDTACA. Ell. Lcavcs 3 lobcd, dentate, cuneate at base; corolla longer than the pungent calyx. 

 Vulgo — Mother-wort. 



Fl. Middle of June, and after. Fr. mat. Middle of August, and after. 



Jlab. About houses; farm-yards; fence-rows, &c. frequent. 2 to 4 feet high: flowers pale purple. 



Obs. An unwelcome foreign weed, now completely naturalized. 

 L. MARRUBiASTnuM. JViUd. Lcaves lancc-ovate, dentate ; corolla as long as the subpungent calyx.' 

 Ft. Latter end of July, and after. Fr. mat. Middle of September. 



Hab. Fence-rows, &c. about Marshallton: rare. 2 to 4 feet high: flowers pale red. 



Obs. This foreign plant was introduced by the late Humphry Marshall, into his botanic garden,— whcnc'j 

 it has spread around the neighborhood, and bids fair to become extersively naturalized: though it %Till n^« 

 be any more welcome than the preceding 



