Vol. III.] 



MINT FAMILY. 



79 



Fibrous-rooted; perennial by rootstocks or stolons. 

 Flowers 2"-4" long. 



Plant glabrous, or slightly pubescent. 9. S. parvula. 



Plant densely pubescent all over. 10. S. campeslris. 



Flowers S"-iy' long. 



Minutely and densely glaiidularpubescent, resiniferous. 11. .S". Byiltoiiii. 



Glabrous or merel3* slightly puberulent. 



Loaves ovate, slender-petioled, cordate, obtuse. 12. 



Leaves lanceolate or ovate-lanceolate, tiearly sessile, acute. 13. 



5. saxatilis. 

 S. sralericulala. 



■?f ^ Nutlets membranous-winged, elevated on the slender gynobase; flo\vers axillary. 14. .S. nervosa. 



I. Scutellaria lateriflora L. Mad-dog 

 Skullcap. (Fig. 3075.) 



Scniellaria lateriflora I.. Sp. PI. 598. 1753. 



I'erenuial by slender stolons, glabrous through- 

 out or puberulent above; stem slender, leafy, erect 

 or ascending, commonly branched, S'-2° 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'-j' long, the upper grad- 

 ually smaller, the uppermost sometimes entire; 

 racemes narrow, secund, axillary or often also termi- 

 nal and leafy-bracted, several-many-flowered; flow- 

 ers 3"-5" 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, south to Florida, New Mexico and Washing- 

 ton. July-Sept. Called also Madweed or Hoodwort. 



2. Scutellaria serrata Andr. Showy Skullcap. (Fig. 3076.) 



Scutellaria serrata .\ndr, Bot. Rep. pi. 797. 1809. 

 5. laevigata Aiken; Eaton, Man. Ed. 6, 2,;^^,. 1S33. 



Perennial, glabrous, or puberulent above; stem 

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

 Leaves ovate or elliptic, slender-petioled, acute at 

 the ape.x, narrowed, or the lowest rounded or sub- 

 cordate at the base, crenate or dentate, 2'-4' long, 

 the uppermost reduced to small floral bracts; 

 racemes almost always simple and terminal, 

 loosely flowered, the flowers opposite; fruiting 

 calyx about 3" long; corolla i' long, blue, min- 

 utely pulierulent, its tube narrow, gradually ex- 

 panded above into the throat, its rather narrow 

 upper lip shorter than the lower; nutlets borne on 

 a short gynobase. 



In woods, southern New York and Pennsylvania to 

 North Carolina, west to Illinois and Kentucky. One 

 of the handsomest of the American species. Ascends 

 to 3000 ft. in Virginia. May-June. 



3. Scutellaria incana Muhl. Downy 

 Skullcap. (Fig. 3077.) 

 Scutellaria incana Muhl. Cat. 56. 1813. 

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

 5^. serrata Spreng. .Sy.st. 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- 

 dcutate, narrowed, roimded or the lower subcor- 

 date at the base, 3'-4,'2' long; racemes terminal, 

 usually numerous and panicled, several-many-flow- 

 ered; fruiting calyx \yi'-2' long; corolla 9"-io''' 

 long, canescent; upper lip of the corolla slightly 

 longer than the lower; gynobase very short. 



In moist woods and thickets, ■ Ontario to Illinois, 

 south to North Carolina and Alabama. June-.\ug. 



