182 RUBIACER. (MADDER FAMILY.) 
calyx-lobes. (Ccelostylis, Torr, § Gray.) — Near Fort King, East Florida. — 
Stem 6/-10'high. Leaves 4”-9"long. Corolla 4" long, white. 
2. S. gentianoides, Chapm. Stem erect, simple, 4-angled, roughish; 
leaves roundish, ovate, or oblong, sessile, acute, the upper surface and margins 
roughened; spikes terminal, few-flowered ; lobes of the corolla connivent; sta- 
mens and style included. — Light dry soil, West Florida. May and June. — 
Stem 6/—10'high. Corolla 6" — 10" long, pale rose-color. 
3. S. Marilandiea, L. Stem simple, erect, smooth, 4-angled; leaves 
ovate-lanceolate, or oblong, acute, sessile, pubescent on the veins; spikes termi- 
nal, many-flowered, sometimes forking; corolla long, slender, the lobes spread- 
ing; anthers and style exserted. — Rich woods, Florida to Mississippi, and 
northward. May and June.— Stem 19-29 high. Corolla 1}/ Tong, scarlet, 
yellow within. — A popular vermifuge. 
20. MITREOLA, L. Mirre-worr. 
Calyx 5-parted. Corolla short, 5-lobed, valvate in the bud, the tube roundish, 
bearded in the throat. Stamens 5, included: anthers ovate. Styles 2, short, 
united above. Stigma capitate. Capsule 2-parted, mitre-shaped, many-seeded, 
the two lobes opening on the inner face near the apex. Seeds oval, concave. — 
Smooth herbs, with opposite leaves, and small white flowers in terminal and 
axillary cymes, with the simple branches recurved in the bud. 
1. M. petiolata, Torr. & Gray. Stem branching; leaves thin, oblong; 
acute, Narrowed into a petiole. (Ophiorhiza lanceolata, Ell.) —Muddy banks, 
Florida to North Carolina, and westward. June -Sept. @— Stem 4-angled, 
1°-2°high. Leaves 2!-3! long. s 
2. M. sessilifolia, Torr. & Gray. Stem simple, 4-angled ; leaves thick, 
ovate or roundish, strongly veined, sessile, rough on the margins; flowers and 
capsule very small. (Ophiorhiza Mitreola, Micha.) — Varies with lanceolate 
obscurely-veined leaves, and larger flowers and fruit, — Grassy swamps, Florida 
to North Carolina, and westward, July-Sept. @—Stem 6'-18' high. 
Leaves 6” - 10” long. Plant pale green. 
21. POLYPREMUM, L. 
Calyx deeply 4-parted, persistent. Corolla wheel-shaped, bearded in the 
throat, 4-lobed, imbricated in the bud. Stamens 4. Style single, very short. 
Stigma ovoid, entire. Capsule ovoid, compressed, 2-celled, loculicidally 2-valved, 
many-seeded. — A low smooth perennial herb, with 4-angled forking stems, linear — 
acute leaves, their bases united by the membranaceous stipules, and solitary 805- 
sile white flowers in the forks of the stem, ; 
the corolla barely lon 
