o8G J-AHIAT.K. (MINT FAMILY.) 



'J. S. integrifolia, 1^. Softly imln'.stent ; slfiii siini)k' or liraiKliinir, 

 6'-2'^ liijL;li ; leuveH i'-\i' l<>iif?. <)litn.Ht', the lower ovate or conlate, cre- 

 iiate, loiig-pi'tioled, the iijiper laucenlate, lunstly entire ; raeeines leafy ; 

 forolla 8"- 10" long, dilated ui)ward, the aiii|ik' lower lip louger tiian the 

 iijijier one. — Low ground. May - July. 



1- ^- ^- Li-avea all linear and entire ; the lowest bract-like. 



10. S. Floridana, Chapni. Minutely pube.seent; tstein slender, branch- 

 ing; lea\is dlitiisi', >e>sile, with revolute margins; the floral one.* shorter than 

 theHowers; rarenies loo.se, few-llowered ; curolla large, much dilated at the 

 throat, the nearly ctjual lips liroad and obtuse ; filaments hairy at the ba.se. — 

 I'ine liarren swamps near the coa.st, West Florida. July. — Stem 1° liigh. 

 Leaves 1' long, i" - \" wide. Corolla 1' loug, deep blue, the lower lip white 



in tlie middle. 



* • Flnwers small, in axillary racemes 



11. S. lateriflora, L. Smooth; stem elongated, dijEfusely branched; 

 leaves petiolcd, ovate-lanceolate, coarsely serrate, acuminate, the lower rounded 

 at the base ; racemes slender, 1-sided ; corolla blue. — Shady swamps. July- 

 Sept. — Stem 2° -3° high. Leaves membrauaceous, 2'-3' long. Corolla 2" 



long. 



* * » Flowers solitary in the axils of the tipper leaves. 



12. S. galericulata, L. Stem erect or ascending, simple or branched, 

 smooth or pubescent ; leaves short-petioled, ovate-lanceolate, acute, slightly 

 crenate, rounded or subcordate at the base, ])aler and j)ubescent beneath ; 

 flowers nearly sessile, turned to one side. — Wet shaded places. North Caro- 

 lina, and northward. July -August. — Stem l°-2° high. Leaves I'-l^' 

 long Corolla 7" -8" long, blue, the lower lip white in the middle, spotted 

 with blue. 



13. S. parvula, ^lichx Stem low, pubescent; leaves ovate or oblong, 

 obtuse, mostly entire, nearly sessile, .strongly veined; flowers small. — Dry 

 ground. May- June. — Fibres of the root often bearing small tubers. Stem 

 6' -9' high. Loaves 4"- 6" long. Corolla blue, 2" -3" long. 



14. S. nervosa, Pursh. Nearly glabrous ; stem slender, mostly simple, 

 the angles ncute, 1°-U° high; leaves thin, obtuse, prominently nerved, the 

 lowest ovate, cordate, coarsely serrate ; the upper narrower and sessile ; flowers 

 small, blue; seed winged. — Low shady woods, Tennessee, and northward. 

 July. 



23. MACBRIDEA, Ell. 



Calyx tubular-bell-shaped, 3-lobed ; the upper lobe lanceolate, entire, the 

 two lower ones oblong, notched or entire. Corolla inflated, 2-lipped; the up- 

 per lip arching, concave, the lower broadly 3-lobed, spreading. Stamens 4. 

 a.scending under the upper lip. Filaments hairy : anthers approximate by 

 pairs, the cells diverging, hairy and denticulate on the margins. Nutlets 

 smooth. — Erect mostly simple perennials. Flowers opposite, crowded in a 

 dense cone-like terminal head. Corolla large, white or purple. 



1. M. pulchra, Ell. Smooth or hairy; leaves lanceolate, acute, serru- 

 late, dotted ; the lower ones narrowed into a petiole, the upper sessile, the 

 floral ones ovate, acute ; calyx striate, the lobes entire ; corolla purple, the 



