HEMIANTHUS. XCI. SCROPHULARIACEZ. 403 
13. GRATIOLA. 
Lat. gratia, favor; alluding to its medicinal virtues. 
Calyx 5-parted, subequal; cor. upper lip entire or slightly bifid, 
lower trifid, the palate not prominent; sta. 2, fertile, mostly with 3 
sterile fllaments ; caps. 2-celled, 4-valved, valves inflexed at margin. 
—FHlerbs with opposite lvs. Ped. axillary, \-flowered, usually bibracteo- 
late near the calyx. 
1. G. aurea. Mull. Golden Hedge Hyssop. 
Smooth; lvs. oblong-lanceolate, subentire, half-clasping ; sterile fil. 2, mi- 
nute.—A small, perennial herb, 6—8’ high, frequenting the borders of muddy 
ponds and other moist places, Mass.! N. Y.! to Flor. Stem declining and 
rooting at the base, quadrangular, simple or branching. Leaves opposite, ses- 
sile, a litthe clasping, smooth, punctate, acute or nearly so, often with a few 
teeth near the end. Flowers yellow, axillary, alternate, on slender stalks, as 
jong as the leaves. Filaments 4, adhering to the corolla, 2 of them minute, 
without anthers. Aug. 
2. G. Virainica. (G. aurea. Ph. G. Missouriana. Beck. G. officinalis. 
Mzx.)—St. ascending, branched ; lws. lanceolate, subacute ; ped. as long or 
longer than the leaves; séerile fil. none. ~2} U.S. and Can. Stem 4—8' high, 
more or less pubescent, round, declining and branching at base. Leaves 1—9 
long, and 4 as wide, smooth, lanceolate, sessile, dentate or nearly entire near 
the ends, subconnate or amplexicaul. Corolla white or pale-yellow, pubescent 
within, twice as long as the calyx, and on long, pubescent stalks. Calyx with 
5 equal segments, and 2 bracts which are linear-lanceolate and rather longer 
than the sepals. July. 
3. G. spH#RocARPA. Ell. (G. Caroliniensis. Le piel Round-fruited 
Hedge Hyssop—Glabrous, ascending, branched; Js. lanceolate-ovate, 
attenuate to the base, sparingly toothed ; ped. scarcely longer than the calyx — 
Low grounds, Western States! toGa. Plant a few inches high, differing from 
the last chiefly in the short peduncles, round capsules, broader leaves, &c. 
Flowers whitish, 5—6” long. June. ¢ 
14. ILYSANTHUS. Rafinesque. 
Gr. thus, mud, avSos, flower; from the habitat of the plants. 
Calyx 5-parted ; cor. upper lip short, erect, bifid, lower lip larger, 
spreading, trifid ; sta. 2 fertile, 2 sterile fil. forked, one of the di- 
visions glandular, obtuse, the other acute, or rarely with half an an- 
ther ; caps. ovate or oblong, about equaling the calyx.—@® with oppo- 
stle lvs., and axillary, \-flowered ped., resembling Gratiola in habit. 
I. eratioLéipes. Benth. (Lindernia dilatata. El. L. attenuata. Mudi. 
L. pyxidaria. Ph. Gratiola anagalloidea. Michx.)—Glabrous, ascending 
much branched; /vs. ovate or oblong, obtusish, subdentate, lower attenuated to 
a petiole; cor. erect, twice longer than the calyx, on bractless peduncles; sterile 
~ ju. bearing the glabrous, acute lobe below the middle.—In wet places, Can., N. 
Y.! Qhio.! Ia., Ill.! to Tex., frequent. A low, inconspicuous plant, 3—6 or 
8’ high. Leaves 5—8” long, sometimes mostly sessile, commonly the lower 
distinctly petiolate. Corolla bluish-white, much exserted, 5’ long. July, Aug. 
—Varies with the leaves somewhat dilated at base and sessile, and the pedun- 
cles longer or shorter, being sometimes a little longer than the leaves. 
1s. HEMIANTHUS. Nutt. 
Gr. ft, half, avSos, flower; alluding to the absence of the upper lip. 
Calyx 4-toothed; cor. upper lip very short or obsolete, lower 3- 
cleft, the middle segment long, spreading; cells of the 2 anthers 
divaricate ; sterile fil. 0; caps. 1-celled, 2-valved —© Minute gla~ 
brous, creeping. Lvs. opposite. 
