466 ORDER XCI. LABIATE. 



Genus VL— THY'MUS. L. 13— L 

 (From tJtumos, strength ; the smell of thyme reviving persons.) 



Cali/x bilabiate ; many-nerved, throat hairy ; upper hp three- 

 toothed, spreading ; inferior bifid, the awl-shaped division ciH- 

 ate ; throat villous. Corolla naked within, upper lip flat, lower 

 three-lobed, middle lobe the longest. 



1. T. serpyl'lum, (L.) Stem procumbent, canescent. Leaves small, 

 with short petioles, ovate, scabrous, flat. Upper lip of the calyx with 

 short, lanceolate teeth, the lower subulate, ciliate. — Nearly white. 

 Europe, Asia, and Africa. Thyme. 



Genus VIL— MICROME'RIA. 13—1. 



Calyx tubular, many-strice, 5-toothed, teeth nearly equal ; 

 throat often villous within. Corolla bilabiate ; upper lip erect, 

 entire or emarginate, nearly flat ; lower lip with nearly equal 

 lobes, spreading. Stamens 4. 



1. M. bracteola'ta, (Benth.) Stent pubescent, simple, slender 

 Leaves linear-lanceolate, acute, entire. Pedicels 3 — 5-flowered. Co- 

 rolla minute, — Carolina. Hedeoma bractcolata, Nutt. 



2. M. Brown'ei, (Benth.) Stem glabrous, prostrate, branches filiform. 

 Leaves roundish-ovate, obtuse, subcrenate, glabrous. Peduncles elon- 

 gated. Calyx villous within. — Florida. 



Genus VIII.— CALAMIN'THA. Pursh. 13—1. 

 (From kalos, beautiful, and mentha, mint.) 



Cabjx tubular, ribbed, glabrous ; throat closed with hair after 

 flowering. Corolla pubescent, with the throat inflated, the up- 

 per lip emarginate, erect, the lower one 3-parted, with the seg- 

 ments obtuse, nearly equal. Stamens 4. 



1. C. grandiflo'ra, (Pursh.) Stem slightly pubescent, terete. Leaves 

 ovate, obtuse, slightly toothed, glabrous. Floicers in opposite, dichot- 

 omous clusters. Stamens shorter than the corolla. Anthers crescent- 

 shaped. — Rose-color, spotted with purple. If. June — Aug. Middle 

 Cai-. and Geo. 



2. C. coccin'ea, (Nutt.) Glabrous, or covered with the lightest pu- 

 bescence. Leaves obovate-oblong, or cuneate-linei*r, obtuse, nearly en- 

 tire, narrowed into a short petiole. Upper lip of the calyx 3-toothed ; 

 calyx villous within. Verticels elongated, 2 — 6-flowered. — Red. East 

 Florida. 



3. C. canes'cens, (T. & G.) Canescent when young. Leaves linear, 

 obtuse, entire, margin revolute, somewhat fasciculate. Verticels 2-flow- 

 ered. Upper lip of the calyx g-toothed. Corolla twice as long as the 

 calyx. — Red. "West Florida. 



Genus IX.— CERANTHE'RA. Ell. 13—1. {Dicerandra, Benth.) 

 (From Jceras, a horn, and anth^ra, an anther.) 



Cahjx bilabiate ; the upper lip emarginate, the lower 2-cleft. 



