io6 



LABIATAE. 



VOL. III. 



Minutely and densely glandular-pubescent, resiniferous. 9. S. Brittonii. 



Densely cinerous-pubescent, pale. 10. S.Bushii. 

 Glabrous or merely slightly puberulent. 



Leaves ovate, slender-petioled, cordate, obtuse. n. S.saxatilis. 



Leaves lanceolate or ovate-lanceolate, nearly sessile, acute. 12. S. galericulata. 



** Nutlets membranous-winged, elevated on the slender gynobase; flowers axillary. 



13. S. nervosa. 



i. Scutellaria lateriflora L. Mad-dog or Blue 

 Skullcap. Fig. 3575. 



Scutellaria lateriflora L. Sp. PI. 598. 1753. 



Perennial by slender stolons, glabrous throughout 

 or puberulent above; stem slender, leafy, erect or 

 ascending, commonly branched, 4'-2i high. Leaves 

 ovate, ovate-oblong or ovate-lanceolate, thin, slender- 

 petioled, acute or acuminate at the apex, coarsely 

 dentate-serrate, obtuse, rounded or subcordate at the 

 base, i '-3' long, the upper gradually smaller, the 

 uppermost sometimes entire; racemes narrow, se- 

 cund, axillary or often also terminal and leafy- 

 bracted, several-many-flowered ; flowers 3"-S" long ; 

 calyx short; corolla blue, varying to nearly white, 

 its lips about equal, one-fifth as long as the tube; 

 nutlets borne on a very short gynobase. 



In wet places, Newfoundland to Ontario and British 

 Columbia, Florida, Mississippi, New Mexico and Ore- 

 gon. July-Sept. Blue pimpernel. Side-flowering scull- 

 cap. Madweed. Hoodwort. 



2. Scutellaria serrata Andr. Showy Skull- 

 cap. Fig. 3576. 



Scutellaria serrata Andr. Bot. Rep. pi. 494. 1809. 

 S. laevigata Aiken; Eaton, Man. Ed. 6, 333. 1833. 



Perennial, glabrous, or puberulent above; stem 

 slender, erect, simple or branched, i-2 high. Leaves 

 ovate or elliptic, slender-petioled, acute at the apex, 

 narrowed, or the lowest rounded or subcordate at 

 the base, crenate or dentate, 2'-4' long, the upper- 

 most reduced to small floral bracts ; racemes almost 

 always simple and terminal, loosely flowered, the 

 flowers opposite ; fruiting calyx about 3" long ; co- 

 rolla i' long, blue, minutely puberulent, its tube nar- 

 row, gradually expanded above into the throat, its 

 rather narrow upper lip a little shorter than the 

 lower; nutlets borne on a short gynobase. 



In woods, southern New York and Pennsylvania to 

 South Carolina, Illinois, Kentucky and Tennessee. One 

 of the handsomest of the American species. Ascends to 

 3000 ft. in Virginia. May-June. 



3. Scutellaria incana Muhl. Downy Skull- 

 cap. Fig. 3577. 



Scutellaria incana Muhl. Cat. 56. 1813. 



Scutellaria canescens Nutt. Gen. 2: 38. 1818. 



5". serrata Spreng. Syst. 2: 703. 1825. Not Andr. 1809. 



Perennial, finely and densely whitish downy, or 

 the upper surfaces of the leaves glabrous; stem 

 rather strict, erect, usually much branched above, 

 2-4 high. Leaves ovate, oval, or oblong, rather 

 firm, slender-petioled, acute at the apex, crenate- 

 dentate, narrowed, rounded or the lower subcordate 

 at the base, 3'-4i' long; racemes terminal, usually 

 numerous and panicled, several-many-flowered; 

 fruiting calyx ii'-2' long; corolla g"-io" long, ca- 

 nescent; upper lip of the corolla slightly longer 

 than the lower; gynobase very short. 



In moist woods and thickets, Ontario to Michigan, 

 Kansas, Georgia, Florida and Alabama. June-Aug. 



