82 l LABIATJE. (MINT FAMILY.) 



date, coarsely crenate, long-petioled, rounded at the apex. — Swamps, Florida, 

 and northward. July and Aug. — Corolla 8"- 10" long, blue or white. 



4- •*- +• Leaves nil linear and entire ; the lowest bract-like. 



8 S. Floridana, n. sp. Minutely pubescent; stem slender, branching; 



Leaves linear, obtuse, entire, sessile, with revolnte margins; the lowest minute 

 and bract-like, the floral ones shorter than the flowers ; racemes loose, few- 

 flowered ; corolla large, much dilated at the throat, the nearly equal lips broad 

 and obtuse , filaments hairy at the base.— Pine-barren swamps near the coast, 

 West Florida. July. — Stem 1° high. Leaves 1' long, £" - 1" wide. Corolla 

 V long, deep blue, the lower lip white in the middle. 



* * FloLcers small, in axillary racemes. 



9 S. lateriflora, L. Smooth; stem elongated, diffusely branched ; leaves 

 petioled, ovate-lanceolate, coarsely serrate, acuminate, the lower rounded at the 

 base ; racemes slender, 1-sided ; corolla blue. — Shady swamps, Florida to Mis- 

 sissippi, and northward. July - Sept. — Stem 2° -3° high. Leaves membra- 

 naceous, 2' -3' long. Corolla 2" long. 



* # =* Flowers solitary, in the axils of the upper leaves. 



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

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

 crenatc, rounded or subcordate at the base, paler and pubescent beneath ; 

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

 and northward. July and Aug. — Stem l°-2° high. Leaves l'-l^' long. 

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



11. S. parvula, Michx. Stem low, pubescent; leaves ovate or roundish, 

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

 Rocky woods, West Florida to Mississippi, and northward. July and Aug — 

 Fibres of the root often bearing small tubers. Stem 6'- 9' high. Leaves 4"- 6" 

 long. Corolla blue, 2" -3" long. 



21. MACBRIDEA, Ell. 



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

 lower ones oblong, notched or entire. Corolla inflated, 2-lipped ; the upper lip 

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

 under the upper lip. Filaments hairy : anthers approximate by pairs, the cells 

 diverging, hairy within, denticulate on the margins. Nutlets smooth. — Erect 

 mostly simple perennials! Whorls crowded in a dense cone like terminal head. 

 Corolla huge, white or purple. 



l. M. pulchra, EH. Smooth or hairy ; leaves lanceolate, acute, serrulate, 



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

 ovate, acute; whorls 4-flowercd ; calyx striate, the lobes entire; corolla purple, 

 tin- tube striped with purple an.l white, the upper lip entire. — Pine-barren 

 swamps, Georgia to North Carolina. Aim. and Sept. — Stem I°-IA° high. 

 Corolla IV long. 



