134 LARIATAE. 



PYCNANTHEMUM Mx. Perennials, eorymbosely branched above, with 

 the flowers in dense capitate heads or cymes. Calyx tubular, striate, equally 

 5-toothed, or the 3 upper teeth partially united. Corolla 2-lipped; upper lip 

 entire or notched; the lower 3-lobed;' lobes all ovate and obtuse. Stamens 4, 

 distant. 



P. lanceolatum Pursh. Stem 1-3 feet high, glabrous or somewhat pubes- 

 cent; leaves lanceolate or linear-lanceolate, sessile or nearly so, entire, ner- 

 vose-veineJ, bracts lanceolate or ovate; calyx-teeth ovate-deltoid, acute. Dry 

 soil; July-September; common; Winneshiek, Floyd, Jackson, Hancock, John- 

 son, Henry, Wapello, Appanoose. Decatur, Ringgold, Winnebago, Cerro Gor- 

 do, Dickinson, and Emmet counties; reported from Fayette and Story coun- 

 ties. ( KaeUin r.lnfi niana ( L. ) MacM. ) 



P. linifolium Pursh. , Stem 1-2 feet high, glabrous; leaves linear-lanceo- 

 late, somewhat 3-nerved. entire, sessile or the lower short-petioled; heads 

 downy; bracts and calyx-teeth pungently awn-pointed. Dry soil; July-Sep- 

 tember; frequent; Jackson, Delaware, Muscatine, Louisa, Johnson, Appa- 

 noose, Decatur, Ringgold, and Fremont counties; reported from Scott county. 

 ( KoelUn flexunsni Walt. ) MacM. ) 



P. pilosum Nutt. Stem 1-3 feet high, hirsute or pilose; leaves lanceolate, 

 sessile or short-petioled, mostly entire; glomerules dense, terminal, hirsute- ,■ 

 caneseent or villous; bracts lanceolate; calyx-teeth lanceolate-subulate. Dry 

 sandy soil; July-September; reported from Muscatine, Lee, Linn, and Des 

 Moines counties. 



hfEDEOMA Pers. Small odorous annuals, with small opposite leaves, and 

 small blue or purple flowers in axillary clusters, collectively in leafy 

 racemes. Calyx 13-nerved, gibbous at the base, bearded in the throat, 2- 

 lipped; upper lip 3-toothed; lower 2-cleft. Corolla 2-lipped; upper lip erect, 

 notched; lower spreading, 3-cleft. Stamens 2, fertile, sometimes 2 sterile 

 stamens on the upper side. 



rf pulegioides (L. ) Pers. American Pennyroyal. Stem 6-12 inches high, 

 erect, branching, pubescent; leaves peti..led, oblong-obovate, somewhat, ser- 

 rate or entire; whorls about 6-flowered; calyx-teeth of the upper lip triangu- 

 lar; corolla bluish; sterile filaments present. Open upland woods; June-Au- 

 guht; frequent; Muscatine, Louisa, Des Moines, Lee, Van Buren, Henry, John- 

 son, Cerro Gordo, Decatur, Page, Calhoun, Fremont, and Lyon' counties; re-, 

 ported from Fayette, and Story counties. 



H- hsspidrj Pursh. Stem 2-5 inches high, branching, pubescent; leaves 

 sessile, linear, obtuse, entire; whorls about 6-flowered; calyx-teeth subulate; 

 corolla bluish; sterile filaments minute or wanting. Dry soil; June-July; 

 common; Winneshiek, Fayette, Jones, Muscatine, Linn, Johnson, Decatur, 

 and Lyon counties; reported from Story and Woodbury counties. 



SALVIA L. Sage. Calyx striate, 2-lipped; the upper lip 3-toothed or en- 

 tire; lower 2-cleft; throat naked. Corolla 2-lipped, ringent; upper lip 

 straight or scythe-shaped, entire -or slightly notched; lower pendant or 

 spreading, 3-lobed. Stamens 2; anther-cells widely separated, connective 

 transverse. 



S. lanceolata Willd. Annual; stem 4-14 inches high, simple or branched, 

 puberulent or somewhat glabrous; leaves linear-oblong or lanceolate, obtuse, 

 entire or crenulate-dentate, slender petioled; inflorescence in spike-like 

 racemes; calyx strongly nerved, upper lip entire, lower 2-cleft, teeth ovate, 

 mucronate-acute; corolla blue, but little exceeding the calyx. Dry soil. 



