ORDER XCI. LABIATE. 471 



upper ones linear-lanceolate, obtuse, sessile. Floicers in panicles com- 

 posed of opposite racemes, a bract at the base of each peduncle. Co- 

 rolla villous, spotted with white. Anthers hairy. — Blue. 21. May — 

 Aug. In damp soils. Common. 2 — 3 feet 



2. S. Carolinia'na, (Lam.) Stem erect, branching, glabrous. Leaves 

 linear-lanceolate, entire, acute, petiolate. Flowers in leafy, loose ra- 

 cemes. Calyx with the segments obtuse. — Blue. 2£. May — June. 

 In thick woods. Middle Car. and Geo. 1 — 2 feet. 



3. S. serra'ta, (Pursh.) Stem erect, pubescent, branching. Leaves 

 oval or ovate, acuminate, serrate, on short petioles. Floicers in termi- 

 nal racemes. Bracts lanceolate. Stamens shorter than the corolla. — 

 Blue. U. June— Sept. In fields. 2—3 feet. 



4. S. villo'sa, (Ell.) Stem erect, villous, branching. Leaves lanceo- 

 late, villous along the veins beneath, on short petioles. Flowers in 

 racemose panicles. Bracts lanceolate. — Blue. 2£. May — July. Mid- 

 dle Georgia. 2 — 3 feet. 



5. S. pilo'sa, (Mich.) Stem erect, hairy, tinged with purple. Lower 

 leaves cordate, obtuse ; upper ones ovate, all rugose, crenate, hairy and 

 dotted on the under surface, on short petioles. Flowers in paniculate 

 racemes. Calyx hispid. Corolla hispid on the outer surface. — White, 

 tinged with violet. %. May — July. Fertile soils. 1 — 2 feet. 



6. S. cordifo'lia, (Muhl.) Stem erect, pubescent. Leaves cordate, 

 acute, obtusely toothed, on long petioles, pubescent. Flowers in oppo- 

 site and terminal racemes. Calyx villous. — White and blue. July — 

 Aug. Car. and Geo. 2 — 3 feet. 



7. S. lateriflora, (L.) Stem erect, glabrous, with the angles some- 

 times pubescent, much branched. Leaves ovate, serrate, acuminate, 

 lower ones on rather long petioles, the upper nearly sessile. Flowers 

 in leafy racemes. Calyx glabrous. — Blue. 2£. June — Sept. Upper 

 Carolina and Georgia. 



Genus XX.— MACBRI'DEA. 13—1. 

 (In honor of Dr. "Wm. Macbride, of Charleston.) 



Calyx turbinate, striate, 3-cleft ; two of the segments large, 

 the other narrow. Corolla bilabiate ; the upper lip entire, the 

 lower one 3-lobed. Anthers villous, fringed. 



1. M. pulchel'la, (Xutt.) Stem erect, simple, glabrous, pubescent at 

 the joints. Leaves lanceolate, serrulate, slightly hairy on the upper sur- 

 face, ciliate ; the upper ones sessile, the lower ones on short petioles. 

 v in a whorl, bracteate. Corolla with the lateral lobes obtuse, 

 reflexed. — White and purple. If. August — Sept. Pine-barrens. 

 1—2 feet. 



Genus XXI.— MARRU'BIUM. 13—1. 

 (From marrob, a Hebrew word for bitterness.) 



Calyx with 10 ribs, with 5 or 10 spreading teeth ; throat 

 hairy-. Corolla with the upper lip bifid, linear, straight, the 

 lower lip 3-cleft, the middle segment largest, emarginate. Sta- 

 mens 4, lower pair longer. 



