LABIAT^E. (mint FAMILY.) 313 



fruiting calyx roundish, the teeth short and acute. — Near Wihnington, North 

 Carolina. Introduced — Stem l°-2°high. CoroUa white. 



3. M. piperita, L. Smooth ; stem creeping at the base, ascending, 

 branched ; leaves ovate-oblong, acute, sharply serrate, rounded at tiie base, 

 short-petioled ; spikes slender, interrupted ; bracts mostly longer than the 

 whorls, the upper ones linear; calyx-teeth hairy. — Low ground. Introduced. 

 July - Sept. — Stems 1°- 2° high. Flowers white or blue. 



4. LYCOPUS, L. 



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

 shaped, exserted, equally 4-cleft. Fertile stamens 2, exserted ; the upper pair 

 sterile, included or wanting : anther-cells parallel. Style 2-cleft at the apex. 

 Nutlets 3-angled, truncate at the apex, narrowed at the base. — Marsh or aquatic 

 herbs, with long runners at the base. Leaves mostly toothed or i)innatifid. 

 Whorls dense, axillary Flowers small, sessile. 



1. L. Virginicus, L. Stem smoothish ; leaves ovate-lanceolate, toothed- 

 serrate, acute or acuminate at each end, roughened above ; calyx-teeth 4, ovate, 

 obtuse; corolla small, exserted ; sterile stamens minute. — Ponds and ditches, 

 Florida? and northward. Sept. — Stem l°-2° high. Leaves l'-2' long. 

 Flowers white. 



2. L. sinuatUS, Ell. Stem smooth, much branched ; leaves pinnatifid- 

 toothed, ovate-oblong, tapering at each end ; the upper ones narrower ; calyx- 

 teeth 5, lanceolate-subulate, acute ; corolla twice as long as the calyx ; sterile 

 stamens minute or none. (L. exaltatus, Pursh.) 



Var. inter medius. Closely pubescent or tomentose ; stem simple or 

 branched, very leafy ; leaves ovate-lanceolate, acuminate at each end, coarsely 

 serrate, pale beneath ; whorls dense ; calyx-teeth subulate, pubescent, nearly as 

 long as the corolla;. seeds pitted. 



Var. angUStifolius, Benth. (L. angustifolius, Ell.) Pubescent; stem 

 simple or sparingly branched ; leaves sessile, lanceolate or linear, toothed- 

 serrate or entire, resinous-<lotted ; calyx-teeth subulate. — Ponds and ditches, 

 Florida to Mississippi, and northward. Aug. - Oct. — Stem 2° -4° high. 

 Leaves 2' -4' long. Flowers white. 



5. CUNILA, L. Dittany. 



Calyx tubular, 10-nerved, equally 5-toothed, hairy in the throat. Corolla 

 2-lipped ; the upper lip notched or entire, the lower 3-cleft. Stamens 2, distant, 

 exserted: anther-cells parallel. Style 2-cleft at the apex. Nutlets smooth.— 

 Perennial herbs. Flowers small, in corymbose or crowded whorls. 



1. C. Mariana, L. Smooth; stem slender, much branched ; leaves ovate, 

 serrate, acute, rounded or cordate at the base, subsessile ; cymes loose, axillary 

 and terminal, peduncled, mostly shorter than the leaves, corymbose ; calyx- 

 teeth lanceolate, acute. — Dry soil along the mountains, Georgia and northward. 

 July -Sept. — Stem 1* high. Leaves I' long. Flowers purple. 

 27 



