480 ORDER XCV. PRIMTJLACEjB. 



1. L. Herbemon'ti, (Ell.) Stem erect, glabrous, columnar. Leaves 

 usually by fours, ovate-lanceolate, entire, glabrous, dotted, sessile, 3 — 5 

 nerved, lateral ones obscure. Flowers in terminal racemes; the lower 

 flowers opposite, or verticillate, the upper ones alternate ; segments of 

 the calyx linear-lanceolate ; those of the corolla oblong-lanceolate, dot- 

 ted ; filaments 5, cohering at the base. — Yellow. If. June — July. A 

 few miles east of Columbia, S. C. 



2. L. quadrifo'lia, (L.) Stem erect, hairy. Leaves verticillate by 

 fours, ovate, acute, nearly sessile. Flowers on axillary peduncles ; pe- 

 duncles 1 -flowered, about half the length of the leaves; segments of 

 the calyx lanceolate, pubescent, dotted. Stamens shorter than the co- 

 rolla, cohering at the base. — Yellow. 2f. May — July. Middle Car. 

 and Geo. 1 — 2 feet. Loose-strife. 



3. L. lanceola'ta, (Pursh.) Stem erect, simple, smooth. Leaves 

 verticillate by fours, on short petioles, lanceolate. Flowers on verticil- 

 late peduncles, the upper ones in racemes; peduncles many flowered ; 

 segments of the corolla ovate, acute. — Yellow. 2{. Juue — July. Mid 

 die Carolina. 



4. L. cilia'ta, (Ell.) Stem erect, branching, quadrangular, furrowed, 

 glabrous, dotted. Leaves generally by fours, verticillate, on rather short 

 ciliate petioles, cordate-ovate, upper ones lanceolate. Flowers axillary, 

 on 1-flowered peduncles, nodding ; segments of the calyx acuminate, 

 lanceolate ; tube of the corolla composed of a purple ring, sprinkled 

 with yellow glands; segments toothed, slightly ciliate at the base 

 Anthers 2-lobed. — Yellow. U- June — July. In rich soils. 



6. L. quadriflo'ra, (Sims.) Stem glabrous, branching, furrowed. 

 Leaves opposite, sessile, long-linear, lanceolate, narrowed at the base, 

 almost to a petiole. Flowers on peduncles, by fours, terminal ; seg- 

 ments of the calyx long, lanceolate, acuminate ; those of the corolla 

 slightly crenate. — Yellow. %. Juue — July. South. Geo. 2 — 3 feet. 



G. L. heterophyl'la, (Mich.) Stem erect, branching, glabrous, angu- 

 lar. Leaves opposite, the lower ones nearly orbicular, becoming nar- 

 rower toward the summit; the upper ones being linear, glabrous, ciliate 

 at the base. Flowers axillary, nodding, on 1-flowered peduncles ; seg- 

 ments of the calyx lanceolate, of the corolla crenate. — Yellow. 2{. 

 June — Aug. Middle country of Car. and Geo. 



Genus II.— CENTUN'CULUS. L. 4—1 

 (The Roman name of the plant.) 



Calyx 4-cleft, persistent, with lanceolate segments. Corolla 

 4-cleft, persistent, with acute segments. Stamens 4, inserted 

 into the corolla. Capsule globose, 1 -celled. 



1. C. lanceola'tus, (Mich.) Stem prostrate, creeping, with assurgent 

 extremities, branched, glabrous. Leaves alternate, lanceolate, some- 

 what cuneate, slightly decurrent. Flowers solitary, axillary, sessile. 

 Calyx persistent. Corolla a little longer than the calyx, attached to 

 the capsule. Anthers 2-lobed. — Red. #. March. In pastures. 2 — 

 3 inches. Pimpernell. 



