152 
Spring Flora of Oklahoma 
segments. Flowers solitary in the upper axils. Corolla pale blue 
or lilac, about 9" long. 
On plains. Kingfisher County. May-August. 
II. SCUTELLARIA (Rivin.) L. 
Annual or perennial herbs, with small, entire or 
toothed, short-petioled leaves and solitary flowers axil¬ 
lary to foliar leaves or leaf-like bracts. Calyx campanu- 
late, 2-lipped, the lips entire, the upper crested, persist¬ 
ent, slightly accrescent. Corolla blue or violet, with a 
recurved tube dilated at the throat, the upper lip arched, 
the lower with two small, lateral lobes and a large, mid¬ 
dle one. Stamens 4. Nutlets papillose-tuberculate. 
Perennial from a thick woody root. 1. S. resinosa. 
Fibrous-rooted; perennial by rootstocks or stolons. 
2. S. parvula. 
1. Scutellaria resinosa Torr. Resinous Skullcap. Perennial, 
minutely pubescent and usually resiniferous, 6'-10' high. Leaves 
ovate or ovate-oblong, sessile, or the lower short-petioled, entire, 
3"-6" long. Flowers solitary in the axils. Corolla white or violet, 
pubescent, 6"-8" long. 
On dry plains. Comanche County. April-July. 
2. Scutellaria parvula Miclix. Small Skullcap. Perennial by 
thickened rootstocks, glabrous or pubescent, sometimes glandular, 
3'-12' high. Leaves ovate, oval or lanceolate, or the lower nearly 
orbicular, entire and sessile, or the lower dentate and petioled, 3"-12" 
long. Flowers solitary in the axils. Corolla 2"-4" long, violet, pub¬ 
escent. 
In sandy soil. April-July. Frequent in central Oklahoma. 
III. MARRUBIUM L. 
Perennial, downy, or woolly herbs. Whorls of flowers 
axillary. Flowers small. Bracts leaflike. Calyx tubular, 5- 
lQ-toothed, teeth somewhat spiny. Corolla short, upper lip 
erect, lower spreading, 3-cleft, the middle lobe broadest. 
Stamens 4, not projecting. Lobes of the stigma short and 
blunt. Ovary deeply 4-lobed. Nutlets ovoid, smooth. 
1. Marrubium vulgare L. Common Hoakhound. Stem erect, 
woolly. Leaves oval, broadly ovate or nearly orbicular, rugose- 
veined, crenate-dentate, whitish above, woolly beneath. Clusters all 
