Mint Family. 137 



Lee, Henry. Johnson, Van Buren, and Decatur counties: reported from Fay- 

 ette, Scott, and Muscatine counties. (S. cordlfolia Muhl.j 



S. parvula Mx. Stem erect, 3-10 inches high, glabrous or pubescent, 

 branching from the base, filiform subterranean stolons bearing a string of 

 tubers; leaves ovate or ovate-lanceolate, sessile by a slightly cordate or trun- 

 cate base, lower petioled, obtuse, entire or obscurely toothed; flowers solitary 

 axillary, pedicelled; corolla violet, pubescent, 2-3 times the length of the 

 calyx. Sandy prairies; May-June; frequent throughout the state; Winne- 

 shiek, Allamakee, Scott, Henry, Wapello, Johnson, Appanoose, Wayne, Deca- 

 tur, Ringgold, Pottawattamie, Shelby, Chickasaw, Emmet, and Lyon coun- 

 ties; reported from Fayette, Muscatine, Story, and Woodbury counties. 



S. galericulata L. Stem 1-3 feet high, erect, glabrous or slightly pubes- 

 cent, simple or branched; leaves ovate-lanceolate or oblong-lanceolate, thin, 

 acute, serrate or nearly entire, sessile or short-petioled, base slightly cordate; 

 flowers few, rather large, short-pedicelled, axillary; corolla blue. Wet 

 places; July-August; infrequent; Fayette, Story, Emmet, Hancock, Winne- 

 bago, and Cerro Gordo counties: reported from Scott and Hamilton counties. 



S. lateriflora L. MiuJ-rhiy Skullcap. Stem 3-3 feet high, glabrous, much 

 branched; leaves thin, ovate-lanceolate or oblong-ovate, long-petioled, acumi- 

 nate, coarsely serrate, base rounded, the lower floral leaves similar; flowers 

 small, in axillary or terminal small 1-sided racemes; corolla blue, rarely 

 white, lips short and equal. Moist places; July-August; frequent and 

 widely distributed; Winneshiek, Jackson. Muscatine, Louisa, Lee, Johnson, 

 Story, Appanoose, Decatur, Winnebago, Emmet, and Lyon counties; reported 

 from Fayette, Scott, Monona, and Woodbury counties. 



PRUNELLA L. Perennial herbs, with simple or branched stems, and 3- 

 flowered sessile axillary clusters collected into terminal heads or spikes. 

 Calyx tubular, about 10-nerved, 2-lipped; upper lip 3-toothed; lower 2-cleft. 

 Corolla ascending, 2-lipped; upper lip erect, arched, entire; lower reflexed- 

 spreadino-, 3-cleft, middle lobe denticulate. Stamens 4; filaments 2-toothed, 

 the 2-celled anther on the lower tooth. Usually spelled Brunella. 



B. vulgaris L. Self-heal. Stem 1-2 feet high, glabrous; leaves ovate, ob- 

 long or obiong-lanceolate, entire or toothed, petioled; floral bracts round- 

 ovate nervose, pointed, spikes dense, obiong-ovoid; calyx purplish; corolla 

 lono-er, violet to purplish. Open upland woods; June-September; common. 



PHYSOSTEGIA Benth. Glabrous erect perennials, with sessile lanceolate 

 serrate leaves, and large showy rose-colored or purplish flowers in leafless 

 terminal spikes. Calyx campanulate, about equally 5-toothed. Corolla ex- 

 serted, funnelform, throat inflated, 2-lipped; upper lip erect, entire; lower 

 spreading, 3-lobed, middle lobe notched. Stamens 4. 



P virqiniana (L.) Benth. False Drayon-head. Stem 1-4 feet high; spikes 

 terminal, solitary or panicled; flowers opposite, in the axils of small bracts. 

 Moist woods; August-September; frequent; Winneshiek, Jones, Linn, John- 

 son, Des Moines, Decatur, Fremont, Story, Winnebago, and Lyon counties; 

 reported from Fayette, Muscatine, and Woodbury counties. 



MARRUBIUM L. Ours a white-woolly aromatic perennial, with petioled 

 round-ovate crenate leaves, and the many flowers in remote axillary whorls. 

 Calyx tubular, 5-10-ribbed, nearly equally 5-10-toothed. Corolla 2-lipped; 

 upper lip erect, notched; lower spreading. 3-cleft. Stamens 4, included. 



M vulqare L. White Hoarhoand. An Old World species, escaped from 

 wardens into waste places; Fremont county; reported from Fayette and Jack- 

 son counties. 



