ORDER XCT. LABIATE. 471 



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

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

 rolla villous, spotted with white. Anthers hairy. — Blue. If. 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. If. 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. Flowers in termi- 

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

 Blue. If. 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. If. 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. 2f. 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 aearly sessile. Flowers 

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

 Carolina and Georgia. 



Genus XX— MACBIU'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, (Nutt.) 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. 

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

 reflexed. — White and purple. 2f. August — Sept. Pine-barrens. 

 1—2 feet. 



Genus XXL— 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 longest. 



