ORDER 91. LABIATJE. 243 



hairy in throat. Corolla tube scarcely exserted, upper lip erect, flat, emar 

 ginate, lower with 3 nearly equal segments. Stamens 4, ascending, distant. 

 1$. Leaves subentire. Fls. in dense oblong spikes, with imbricated bracts. 



1 O. vulgare L. Wild M. Leaves ovate, petiolate, hairy ; spikes corymbed ; bnwta 



ovate, purplish ; calyx teeth equal. Fields :, rare. If. June, July. 



2 O. MARJORANA. Sweet M. Leaves oval or obovate, obtuse, petiolate, hoary-pubes- 



ceiit ; bracts roundish ; calyx tube split below. If. A kitchen vegetable. 



20. THYMUS, L. THYME. Cal. 2-lipped, ovoid, 13-veined, upper lip 

 of 3, the lower of 2 subulate teeth, throat hairy. Cor. moderately 2-lipped. 

 Sta. straight, exserted, distant. > Leaves small, entire, strongly veined. 

 Bracts minute. Flowers purple. European culinary herbs. 



1 T. Serpyllum L. Wild T. Stems creeping and ascending, leafy, each terminated 



with a small, dense, obloug head of flowers grateful to bees, t . June. 



2 T. VULGARIS. Stems erect from the decumbent base ; Ivs. oblong-ovate to lanceolate, 



the sides revolute ; fls. in term., leafy spikes. Much branched. 6 KX high. Jn., Jl. 



21. OALAMINTHA, Mcench. CALAMINTH. Cal. tubular, 13-nerved, 

 throat mostly hairy, upper lip 3-cleft, lower 2-cleft. Corolla tube straight, 

 exserted, throat inflated, limb bilabiate, upper lip erect, entire or emargi- 

 nate, lower spreading, its middle lobe largest. Stamens 4, the lower pair 

 longer, usually ascending. 2{ 



Herbs hairy. Cymes dense, capitate, bracted. Calyx tube curved, 2-lipped..No. 1 



Herbs hairy. Cyme* loose, pedunculate. Calyx tube straight, 2-lipped No. 3 



Herbs smooth. Cy. loose, sessile, bracted. Cal. straight, teeth subregular. . . No. 3 

 Shrubs low, slender, nearly smooth. Cymes few-flowered. Fls. large Nos. 4 7 



1 C. Clinopodium Benth. Wild Basil. Plant clothed with whitish hairs ; leaves 



ovate, subserrate ; fls. purplish, in dense verticils or heads, with many subulate 

 bracts. Low woods. N. and W. 1 2f. Heads near 1' wide. June August. 



2 C. Nepeta Link. Branched below, soft-villous ; leaves small, broad-ovate, obtuse ; 



cymes few-flowered, becoming some racemed ; corolla white, 3 M' ; calyx \". Ya., 

 Tenn., to Ga. Roadsides, &c. 2f. Strongly aromatic. July, August. Europe. 



3 5. glabella B. Smooth, decumbent at base, diffusely branched ; leaves narrowly 



oblong, tapering to base ; verticils 6-10-flowered. Rocks, O. to Ark. 18'. Cor. 45", 

 pale violet. Fragrant like Pennyroyal. Often produces runners, and runs into 

 /3. Aiver*ifoUa Flowering stems nearly erect, the barren prostrate like runners, 

 bearing small ovate leaves (3 1"). Rocks, Niagara, and N-W. 10'. 



4 C. Caroliniana Sw. Smooth, simple ; Ivs. ovate, obtuse, crenate-serrate ; bracts 



similar ; cy. few-flwd., on short stalks ; cor. rose-purp., 79'". Dry woods, S. 15'. Jl. 



5 C. coccinea B. Shrub with virgate branches ; Ivs. narrowly ovate-oblong ; verti- 



cils of 2 6 ample scar. fls. ; cor. 1518", gland.-pubescent. Sandy shores, Fla. 2f. 



6 C. canescens T. & G. Low shrub, minutely canescent-downy ; leaves linear, with 



rolled edges, obtuse, crowded ; fls. sol., opp., 8", rose-red. Sandy shores, Fla. 812'. 



7 C. dentata Chapm. Tomentous; Ivs. wedge-obovate, 2-4-toothed at apex. Fla. 2f. 



22. MELISSA, Tourn. BALM. Calyx 13-ribbed, the upper lip 3- 



toothed, flattened and dilated, lower bifid. Cor. tube recurved-ascending, 

 upper lip erect, flatfish, lower spreading, 3-lobed, the middle lobe mostly 

 broadest. Stamens ascending. 

 Iff. officinalis L. Pubescent; st. erect, branching: fls. in loose, axillary cymes: 



