XClii. LABIATE. 413 



2. LIPPIA. 



In honor of Augustus Lippi, a French physician. 



Flowers in dense, pedunculate heads ; calyx 2-parted, compressed 

 erect, membranaceous, shorter than the tube of the corolla; cor- 

 funnel-shaped, limb subbilabiate, upper lip entire or emarginatej 

 lower 3-lobed ; sta. 4, didynamous, included ; drupe dry, thin, en- 

 closed in the calyx, 2-seeded. Shrubs or prostrate herbs, with opposite 

 leaves. Heads on axillary peduncles. 



L. NODIFLORA, Michx. (Zapa^ja nodiflora. Ph. and authors.) Fog-fruit. 



Glabrous, procumbent : st. 4-angled, geniculate, simple ; Ivs. lanceolate or 

 linear-lanceolate, acute, serrate, cuneate at base, petiolate, shorter than the pe- 

 duncles. 1\. On river banks, Penn. to la. ! 111. and La. Stems If or more long. 

 Leaves with conspicuous veins, 1 2' long, J as wide, petioles 3 6". Pe- 

 duncles 2 3'. Heads ovoid or roundish. Flowers small, purplish-white. 

 Fuly, Aug. 

 0. lanceolata. (Lippia lanceolata. Me.) Lvs. linear-lanceolate. 



3. PHRYMA. 



Calyx cylindric, bilabiate, upper lip longer, 3-cleft, lower lip 2- 

 toothed ; corolla bilabiate, upper lip emarginate, much smaller than 

 the 3-lobed lower one ; seed solitary. Herbs with opposite Ivs. Fls. 

 opposite, spicate, dejlexed in fruit. 



P. LEPTOSTACHYA. (Priva. Lindl.) Slender-spiked Phryma or Lopseed. 



Lvs. stalked, ovate, serrate ; spikes long and slender; col. in fruit reflexed. 

 7J. Found in rocky woods, Can. and U. S. Stem 2 3f high. Leaves large, 

 (3- -6' long), thin and coarsely toothed, on short stalks. Flowers small, oppo- 

 site, light-purple, in very long and slender spikes, of which one is terminal, 

 the rest opposite and axillary, each often with a pair of bracts below. After 

 flowering the calyx closes upon the fruit and becomes reflexed backwards close 

 to the stem. Hence the common name lopseed. The specific name refers to 

 the slender spikes. Seeds solitary, rather large, invested with a thin, membra- 

 nous capsule, and enclosed in the matured calyx. July. 



ORDER XCIIL LABIATJE. LABIATE PLANTS. 



Herbs or undershrubs with 4-cornered stems and opposite branches. 



Lvs. opposite, without stipules, replete with receptacles of aromatic oil. 



Fls. in axillary, subsessile verticillasters, sometimes as if in whorls, spikes or heads. 



Color almost always of the cyanic series, blue, purple, red, white, &c. 



Cal. tubular, regularly 5-toothed or cleft, or bilabiate, persistent. [3-cleft one. 



Cor. bilabiate (rarely regular, 5-toothed), the upper lip bifid or entire, overlapping in aestivation the lower 



Sta. 4, didynamous, or sometimes only 2, the upper pair being abortive or wanting, situated on the corolla 



tube. Antft. mostly 2-celled. 



Ova. free, deeply 4-lobed, the single style arising from the base of the lobes. 

 FT. 14 hard nuts or achenia. 

 Sds. erect, with little or no albumen. Embryo erect. Cotyledons flat 



Genera 125, species 2350, chiefly natives of temperate regions, being most abundant between latitude* 

 40 and 50 of the northern hemisphere. 



Properties. This well-known family is universally pervaded by an aromatic, volatile oil, and a bittef 

 principle ; the former rendering them eminently tonic, cordial and" stomachic; the latter, where it pre 

 vails, febrifugal. The pennyroyal, lavender, sage, hoarhound, thyme, spearmint, peppermint, horse' 

 mint, rosemary, $-c., <J-c., plants whose qualities are too well known to require particular mention here, 

 are all members of this useful family. Not one species is poisonous or even suspicious. 



