110 ; LABIATAE, Vor. 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, 1’-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’-5” 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. Pl. 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 5-10-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. 
1. Marrubium vulgare L. White or 
Common Hoarhound.: Fig. 3588. 
Marrubium vulgare LL. Sp. Pl. 583. 1753. 
Stem erect, stout, woolly, especially below, 
1°-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, 
1-2’ long, rough, whitish above, woolly be- 
neath; petioles 2’-1’ 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. Pl. 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, 5-10-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, 
