OKDEU 91. LABIATE. 239 



2. COLEUS, Lour. Cal. deflexed in fruit, unequally 5-toothed. Cor. 

 decurved, upper lip obtusely 3-4-cleft, lower longer, entire, concave, in- 

 volving the 4 stamens. Verticils 6- QO-flowered. Asia. 



C. BLUKEI. Leaves large, ovate, bluntly serrate ; verticillasters distinct, GO-fluwcred. 

 2f. Tender, cultivated for its splenditf leaves, which are marked with crimson, green, 

 and bronze. Flowers inconspicuous. 



3. HYFTIS, L. Calyx 5-toothed, teeth acute or subulate. Cor. tube 

 cylindric, limb 5-lobed, the lower abruptly deflexed, contracted at its base, 

 the 4 others flat, erect or spreading. Stam. 4, declinate. Ach. ovoid or ob- 

 long. In our species the flowers are in involucrate heads. Summer. 



If. radlata Willd. Erect, glabrous ; leaves lance-ovate to lance-linear, unequally and 

 bluntly serrate, tapering to the petiole ; heads opposite, pedunculate, at length 

 globular, bracts seeming radiate. V Damp, S. 2 3f. 



4. LAVANDULA, L. LAVENDER. Cal. ovoid-cylindric, with 5 short 

 teeth, the upper one often largest. Cor. upper lip 2-lobed, lower 3-lobed, 

 lobes all nearly equal, tube exserted, stamens included. 5 



I.i. spiCA. Leaves hoary, linear-oblanceolate to linear-lanceolate, rolled at edge, sessile, 

 in the interrupted spike bract-like ; flowers small, lilac. Very fragrant, and yielding 

 the well-known Oil-of- Lavender. 12 18'. July. 



5. AMETHYSTEA, L. Flowers as in Teucrium, but the stamens are 

 only 2. From Siberia. 



A . CXERULKA. A branching, smooth herb, If high, with the leaves 3-parted and incised, 

 and blue (to white) corollas little exceeding the calyx. July Oct. 



6. TEUCRIUM, L. GERMANDER. Cal. subcampanulate and subregu 

 lar, in 5 acute segments. Cor. with the 4 upper lobes nearly equal, the 

 lowest largest, roundish. Stam. 4, exserted from the deep cleft in the 

 upper side of the tube. 



T. Canadense L. Plant erect, hoary-pubescent ; Ivs. ovate-lanceolate, acute, serrate, 

 petiolate ; bracts linear-lanceolate, about as long as the calyx ; spike long, of many 

 crowded verticils of odd-looking purplish flowers, ti Damp grounds. 2f. July. 



7. TRICHOSTEMA, Lin. BLUE CURLS. Calyx very oblique, veiny, 

 lower lip of 2 short teeth, upper twice as long, of 3, all acute. Cor. tube 

 slender, limb obliquely 5-lobed. Filam. 4, very long, exaerted and curved. 

 Cymes loose, panicled. Corolla blue. 



1 T. dicliotom i L. Lvs. oblong-lanceolate, attenuate at base, obtuse, entire pubes- 



cent, as well as the stem and branches. Dry soils, Mass., and 8. If. August. 



2 T. llneare N. Leaves linear, nearly smooth ; stem and branches puberulent. Dr 



soils, N. Y. (at Salem), and S. If. Flowers as in the other, 4". July, Aug. 



8. ISANTHUS, MX. FALSE PENNYROYAL. Calyx equally 5-toothed, 

 throat naked. Cor. 5-parted, tube straight and narrow, segm. ovate and 

 equal. Stam. subequal, incurved, ascending, longer than the corolla, y 

 Viscid, pubescent, with entire leaves acute at each end. Flowers axillary. 



I. coeruleus MX. Dry fields, N. and W. 1 IJf. Branching and leafy, resembling 

 Pennyroyal. Leaves lance-elliptic, 3-veined. Flowers 1 2 in each axil. blue. Jnlv. 



