782 FLORA. 



i. Teucrium Canadenst L. American Germander or Wood Sage. 

 (I. F. f. 3070.) Perennial, pubescent or eanescent; stem stiff, 3-6 dm. tall. Leaves 

 lanceolate to ovate-lanceolate, acuminate, irregularly dentate, mostly narrowed at 

 the base, short-petioled, 3-13 cm. long; spike becoming 1. 5-3 dm. long in fruit, 

 its lower bracts sometimes foliaceous; upper bracts commonly not longer than the 

 calyx; flowers 1-2 cm. long, short-pedicelled; calyx about 6 mm. long in fruit, 

 its three upper teeth obtuse or subacute. In moist thickets or along marshes, N. E. 

 to Manitoba. Fla., Kans., Tex. and Mex. June-Sept. 



2. Teucrium occidentale A. Gray. Hairy Germander. (I. F. f. 3071.) 

 Perennial, villous or pubescent; stem 3-9 dm. high. Leaves lanceolate or ovate- 

 lanceolate, thin, acute or acuminate, sharply dentate, mostly rounded at the base, 

 usually slender-petioled, 2-9 cm. long; spikes becoming 0.7-2 dm. long in fruit; 

 bracts lanceolate-subulate or the lower sometimes larger; calyx and axis of the 

 spike villous-pubescent, the 3 upper calyx-teeth acute or acutish; corolla 8-12 mm. 

 long. In moist soil, Ont. to Penn., Br. Col., Kans., N. Mex. and Cal. July-Sept. 



3. Teucrium laciniatum Torr. Cut-leaved Germander. Diffusely 

 branched from a woody perennial root, 1.5-3 dm. m g ft - Leaves pinnately 3-7- 

 parted into linear segments; upper leaves about equalling the flowers; corolla 

 1-2 cm. long, blue or lilac. Plains, Kans. and Colo, to Tex. and Ariz. 



3. ISANTHUS Michx. 



An annual erect finely viscid-pubescent much-branched herb, with narrow 

 entire or few-toothed leaves, and small blue flowers in loose axillary cymes. Calyx 

 broadly campanulate, 10-nerved, nearly equally 5 -toothed, the teeth lanceolate. 

 Corolla-tube not longer than the calyx, enlarged into the throat, the limb nearly 

 equally 5 -cleft into obovate somewhat spreading lobes. Stamens 4, didynamous, 

 incurved-ascending, not longer than the corolla, the anterior pair slightly the 

 longer; anther-sacs divergent at maturity. Ovary deeply 4-lobed; style minutely 

 2-cleft at the summit. Nutlets rugose-reticulated. [Greek, equal-flower, the 

 corolla-lobes being nearly equal.] A monotypic genus. 



1. Isanthus brachiatus (L.) B.S.P. False Pennyroyal. (I. F. f. 3072.) 

 Stem slender, much branched, 1.5-5 dm. * a ^? the branches spreading. Leaves 

 oblong or elliptic-lanceolate, acute at each end, entire, or with a few sharp teeth, 

 3-nerved, short-petioled, 2-5 cm. long, 4-12 mm. wide; axillary cymes 1-3-flowered; 

 pedicels very slender, some of them as long as the fruiting calyx; calyx-lobes acute 

 or acuminate, longer than or equalling the tube; corolla 4-6 mm. long, the fruiting 

 calyx 6mm. long. In sandy soil, especially along streams, Quebec and Ontario to 

 Minn., Kans., Ga. and Tex. July-Sept. [/. coeruleus Michx.] 



4. TRICHOSTEMA L. 



Annual or perennial erect branching herbs, some western species shrubby, with 

 lanceolate oblong or linear entire or slighly repand leaves. Flowers small, or 

 middle-sized, pink, blue, purple, or white, paniculate, or in axillary loose or dense 

 cymes. Calyx campanulate, very unequally 5-lobed in our species, the lobes 

 ovate or lanceolate. Corolla-tube slender, exserted or included, the limb some- 

 what oblique and deeply 5-cleft into oblong more or less declined segments. 

 Stamens 4, didynamous, ascending, curved, the anterior pair the longer, the 

 filaments filiform, spirally coiled in the bud, long-exserted; anther-sacs divaricate, 

 more or less confluent at the base. Ovary deeply 4-lobed; style 2-cleft at the 

 summit. Nutlets obovoid, reticulated. [Greek, hair-stamen, referring to the 

 slender filaments.] About 8 species, natives of North America. 



Leaves oblong; or lanceolate; plant minutely viscid-pubescent. 1. T. dichotomum. 



Leaves linear; plant puberulent or glabrous. 2. T. lineare. 



i. Trichostema dichotomum L. Blue Curls. Bastard Pennyroyal. 

 (I. F. f. 3073.) Annual, minutely viscid-pubescent; stem slender, 1. 5 5 dm. 

 high. Leaves oblong or oblong-lanceolate, membranous, narrowed into short 

 petioles, 2-8 cm. long; the upper gradually smaller; flowers paniculate, l2-l8mm. 

 Ion-, borne 1-.^ together on 2-bracteolate peduncles; calyx oblique, very unequally 

 5 lobed, the ;> upper lobes much longer and more united than the 2 lower ones; 

 corolla blue, pink or rarely nearly white, the limb longer than the tube; stamens 



