274 SYSTEMATIC BOTANY. 



flowers minute, remote, white, sessile in elongated, very slender spikes. 

 Common in waste places. 2-3 feet high. July- August. 



3. V. AUBLETIA (Garden Verbena). Stem weak, decumbent at base, 

 erect above, square, viscid-pubescent, with opposite branches ; leaves oval, 

 deeply cut and toothed ; flowers-large, in solitary, dense, corymbose clusters, 

 on long peduncles ; bracts downy, nearly as long as the downy calyx, narrow, 

 persistent ; corolla rose-red or scarlet, with emarginate lobes. In house 

 cultivation, also in the open air. 1-2 feet high. May. 



2. Phryma. Calyx cylindrical, bilabiate ; upper lip longer, with 

 3 bristly teeth ; lower lip 2-toothed. Corolla bilabiate. Style slender. 

 Stigma 2-lobed. Fruit oblong, i-celled, i-seeded. y. 



P. LEPTOSTACHYA (Lopseed}. Stem erect, slender, square, branching, 

 pubescent ; leaves ovate, coarsely serrate, thin and large ; flowers opposite, 

 rather small, in very long, slender spikes ; corolla light purple ; pedicels of 

 the fruit deflexed ; seed solitary, inclosed in a thin pericarp, all invested by 

 the closed calyx. In rich woodlands. 1-3 feet high. July. 



Order LXII. LABIATE (Mint Family). 



Herbs, or slightly shrubby plants. Stems square, usually with 

 opposite branches. Leaves opposite or verticillate, usually con- 

 taining receptacles of volatile oil. Flowers axillary or terminal, 

 in whorls, which sometimes take the form of dense heads ; rarely 

 solitary. Calyx tubular, free from the ovary, persistent, 4~5-cleft, 

 or bilabiate. Corolla bilabiate, rarely almost regular, with 4-5 

 subequal lobes. Stamens didynamous, sometimes only 2, the 

 upper pair being abortive, or wanting. Ovary deeply 4-lobed. 

 Style i, central, arising from the base of the 4 lobes of the ovary, 

 which in fruit consists of 4, rarely fewer, little separate nuts or 

 achenia, contained in the tube of the persistent calyx. 



1. Lavandula. Calyx ovoid-cylindric, with 5 short teeth ; the 

 upper ones often the largest. Upper lip of the corolla 2-lobed ; lower 

 lip 3-lobed ; lobes nearly equal. Stamens included, y. 



L. VERA (Lavender}. Stem suffruticose and branching at base ; leaves 

 linear-lanceolate, sessile, revolute on the margin, white-downy ; flowers blu- 

 ish, in interrupted spikes ; corolla much exsert. July. 



2. Mentha. Calyx somewhat campanulate, with 5 equal teeth. 

 Corolla with a short tube, nearly regular, 4-cleft ; upper lobe broadest, 

 entire or emarginate. Stamens 4, nearly equal, straight, distant. 

 Achenia smooth, y. 



"i. M. CANADENSIS (fforseminf).Stem low, ascending, simple or branch- 

 ing, pubescent with reversed hairs on the angles ; leaves oblong, or oblong- 

 lanceolate, serrate ; flowers small, pale purple, in dense, axillary, globular 



