SCROPHULARIACEJE. (FIGWORT FAMILY.) 291 
4. L. Elatine, Miller. Hairy; stem prostrate, slender, branching ; leaves 
small, ovate and hastate; the lowest sometimes opposite and toothed ; pedicels 
axillary, filiform, commonly longer than the leaves ; flowers small, yellow and 
purplish ; calyx-lobes lanceolate, acute. ~~ Waste places, North Carolina. Nat- 
uralized. (1) — Stem 4' - 12! long. 
6. MIMULUS, L. MONKEY-FLOWER. 
Calyx tubular, 5-angled, sharply 5-toothed. Corolla bilabiate; the upper lip 
2Jobed, erect or reflexed ; the lower 3-lobed, spreading. Stamens 4, didyna- — 
mous : anther-cells somewhat confluent. Stigma ovate, 2-lipped. Capsule locu- 
licidally 2-valved, many-seeded. — Erect smooth perennial herbs, with opposite 
leaves, and axillary purple flowers. 
1. M. ringens, L. Stem compressed, 4-angled, the angles wingless; 
leaves oblong or lanceolate, denticulate, cordate and clasping at the base; pe- 
duncles longer than the flowers. — Swamps in the upper districts. Aug. — Stem 
1°-2°high. Leaves thin, 2’- 4’! long. Corolla showy, the palate greenish and 
pubescent. 
2. M. alatus, Ait. Stem square, with winged angles; leaves oblong-ovate, 
acuminate, serrate, tapering at the base into a petiole; peduncles shorter than 
the flowers. — Swamps, Florida, and northward. July and Aug.—Stem 2° 
high. Leaves 2’-5' long. Calyx-teeth small. 
7. HERPESTIS, Gertn. 
Calyx 5-parted ; the 3 outer lobes, especially the upper one, broader. Corolla 
bell-shaped, 5-lobed or bilabiate, with the upper lip 2-lobed or emarginate, the 
lower 3-lobed. Stamens 4, didynamons: anther-cells contiguous or divaricate. 
Style dilated and flattened at the apex. Capsule 2-valved, many-seeded. — Low 
herbs, with opposite leaves. Flowers opposite, axillary, or in leafy terminal 
racemes. 
(v Stems 4-angled : leaves serrate : peduncles 2-bracted at the base : exterior calyx-lobes 
oblong: corolla white. E s T 
1. H. nigrescens, Benth. Smooth; stem erect, simple or branched; 
leaves oblong or oblong-obovate, rather obtuse, serrate above the middle ; lower 
-Peduncles as long as the leaves, the upper much longer; tube of the corolla 
Striped with blue; the upper lip rounded. (Gratiola acuminata, Walt.) — Low 
ground, Florida to North Carolina, and westward. Aug. and Sept. — Stem 1° 
~1}° high. Leaves 1/- 2 long. 
. * H. peduncularis, Benth. Smooth; stem decumbent, diffuse, creep- | 
ing near the base; leaves small, obovate-oblong, entire near the base; peduncles | 
filiform, 3 - 4 times as Jong as the leaves.— Key West.— Stems 6/ - 12^ 
. Lewesa"-6"]long, Flowers smaller than in No.1. 
