OKDER 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. (I) Verticils 6- co-flowered. Asia. 



C. BLUMEI. Leaves large, ovate, bluntly serrate ; verticillasters distinct, GO-flowered. 

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

 and bronze. Flowers inconspicuous. 

 / 



3. HYPTIS, 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. Stani. 4, declinate. Ach. ovoid or ob- 

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

 H. 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 8-lobed, 

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



L. 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. 1218'. July. 



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

 only 2. From Siberia, 



A. CCERULKA. A branching, smooth herb, If high, with the leaves 3-parted and indeed, 

 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. 2f Damp grounds. 2f. July. 



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

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

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

 Cymes loose, panicled. Corolla blue. 



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



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



2 T. lineare 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, if 

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

 I. coerulens Ms. Dry fields, N. and W. 1 l|f. Branching and leafy, resembling 



Pennyroyal. Leaves lance-elliptic, 3-veincd. Flowers 12 in each axil, blue. July. 



