no 



LABIATAE. 



VOL. III. 



13. Scutellaria nervosa Pursh. Veined 

 Skullcap. Fig. 3587. 



.S". nervosa Pursh, Fl. Am. Sept. 412. 1814. 

 Scutellaria teucriifolia J. E. Smith in Rees' Cycl. 

 32 : no. 15. 1816. 



Perennial by filiform stolons; stem glabrous 

 or sparingly pubescent, erect, slender, simple 

 or sometimes branched, 6'-2 high. Leaves 

 thin; glabrous, or sometimes decidedly pubes- 

 cent, the lower slender-petioled, nearly orbicu- 

 lar, crenate, often subcordate at the base, the 

 middle ones larger, ovate, i'-2' long, sessile or 

 nearly so, obtuse or acute, coarsely dentate or 

 crenate, the upper lanceolate or ovate-lanceo- 

 late, acute, commonly entire; flowers solitary 

 in the axils; fruiting calyx about 2" long; 

 corolla blue, 4"-s" long, puberulent, the lower 

 lip longer than the concave upper one ; nutlets 

 membranous-winged, borne on a slender gyno- 

 base. 



In moist woods and thickets, southern Ontario, 

 New York and New Jersey to Illinois and Mis- 

 souri, North Carolina and Tennessee. Ascends 

 to 3000 ft. in Virginia. May-Aug. 



6. MARRUBIUM [Tourn.] L. Sp. PI. 582. 1753. 



Perennial branching mostly woolly herbs, with petioled dentate rugose leaves, and small 

 white or purplish flowers in dense axillary clusters, the juice bitter. Calyx tubular, 5-10- 

 nerved, regularly 5-io-toothed, the teeth nearly equal, or the alternate ones shorter, acute or 

 aristate, spreading or recurved in fruit. Corolla-limb 2-lipped, the upper lip erect, entire or 

 emarginate, the lower spreading, 3-cleft, its broader middle lobe commonly emarginate. 

 Stamens 4, didynamous, included', the posterior pair the shorter ; anthers 2-celled. Style 

 2-cleft at the summit, the lobes short. Ovary deeply 4-lobed. Nutlets ovoid, smooth. [Name 

 Middle Latin, perhaps from the Hebrew, referring to its bitter qualities.] 



About 40 species, natives of the Old World, the 

 following typical. 



i. Marrubium vulgare L. White or 

 Common Hoarhound. Fig. 3588. 



Marrubium vulgare L. Sp. PI. 583. 1753. 



Stem erect, stout, woolly, especially below, 

 i-3 high, the branches ascending. Leaves 

 oval, broadly ovate or nearly orbicular, rugose- 

 veined, obtuse at the apex, crenate-dentate, 

 rounded, narrowed or subcordate at the base, 

 i '-2' long, rough, whitish above, woolly be- 

 neath ; petioles i'-i' long, usually exceeding 

 the flowers ; clusters all axillary, densely many- 

 flowered ; flowers whitish; calyx-teeth usually 

 10, subulate, more or less recurved, glabrous 

 above, woolly below. 



In waste places, Maine and Ontario to Minne- 

 sota and British Columbia, North Carolina, Ala- 

 bama, Texas, Mexico and California. Also in South 

 America. Naturalized from Europe. Native also of 

 Asia. Old names, houndbene, marrube, marvel. 



7. SIDERITIS [Tourn.] L. Sp. PI. 574. 1753. 



Annual or perennial, usually pubescent herbs or shrubs, with opposite, entire or toothed 

 leaves, and small white, pink, or yellowish flowers in axillary clusters which are separated 

 or contiguous. Calyx tubular, 5-io-nerved, slightly 2-lipped, the teeth spine-tipped, the 

 upper middle one broader than the others. Corolla-limb exceeding the calyx, 2-lipped ; upper 

 lip entire or lobed ; lower lip longer than the upper, with a broad middle lobe. Stamens 4, 



