456 ORDER XC. SCROPHTTLARIACE^E. 



plexicaul, serrate or rarely entire. Panicle lax; corolla sub-campanu- 

 late, upper lip scarcely shorter than the lower; sterile filaments longi- 

 tudinally bearded. 



Genus VI— MIM'ULUS. L. 13—2. 

 (From mimo, an ape, from its ringent corolla.) 



Calyx prismatic, 5-toothed. Corolla ringent, with the upper 

 lip reflexed at the sides ; palate of the lower lip prominent. 

 Stamens 4, didynamous. Stigma thick, bifid. Capsule 2- 

 celled, many-seeded. Seeds minute. 



1. M. rin'gens. Stem, erect, glabrous, 4-angled. Leaves opposite, 

 sessile, narrow, lanceolate, acuminate, serrate, glabrous. Flowers axil- 

 lary, on peduncles about the length of the leaves ; segments of the ca- 

 lyx subulate ; lower lip of the corolla 3-lobed, larger than the upper. 

 Seed numerous, small. — Pale blue. If. July — Sept. 



2. M. ala'tus. Stem erect, glabrous, square, slightly winged. Leaves 

 ovate, lanceolate, serrate, on short petioles. Flowers axillary, on short 

 peduncles; segments of the calyx mucronate. Corolla tinged with 

 yellow. — Pale blue. 2f . Aug. — Sept. Pine-barrens. 1 — 2 feet. 



Genus VIL— HERPESTIS. Gsert. 13—2. 

 (From herpestes, any thing that creeps.) 



Calyx 5-cleft, unequal. Corolla tubular, somewhat bilabiate. 

 Stamens 4, didynamous, included. Capsule 2-celled, 2-valved, 

 with the dissepiment parallel to the valves. 



1. H. cuneifo'lia, (Pursh.) Stem prostrate, branching, glabrous, suc- 

 culent. Leaves opposite, cuneate, obovate, obscurely crenate toward 

 the summit, sessile. Flowers on axillary peduncles about as long as 

 the leaves ; the three exterior segments of the calyx broad, the two 

 interior narrow, with 2 bracts at the base. Corolla nearly campanulate, 

 with a 5-cleft border ; segments nearly equal — Pale purple, if. May 

 — Oct. Inundated lands. H. Monnieria, Hum. 



2. H. eotundifo'lia, (Pursh.) Stem procumbent, assurgent, pubes- 

 cent. Leaves oval, nearly orbicular, slightly hairy, amplexicaul. Flow- 

 ers on opposite peduncles ; the 3 outer leaves of the calyx large, the 2 

 interior small and subulate. Anthers sagittate. — Blue. If. July — 

 Sept. Along the margins of ponds. 



3. H. amplexicau'lis, (Pursh.) Stem procumbent, woolly. Leaves 

 cordate, amplexicaul, entire. Flowers on opposite peduncles, shorter 

 than the leaves, larger than the preceding species. — Blue. 2f . July — 

 Sept. Wet pine-barrens. Mid. Car. and Geo. 



4. H. michan'tha, (Pursh.) Stem prostrate, glabrous, succulent. 

 Leaves sessile, ovate, obtuse, entire, glabrous. Flowers on axillary pe- 

 duncles, shorter than the leaves. — White. If. Sept. — Oct. On the 

 margins of rivers. Hemianthus micranthoides. 



6. H. nigres'cens, (Walt.) Stem erect, square, glabrous. Leaves lance- 

 olate, toothed at the summit. Flowers solitary, axillary. Stamens 4, 

 fertile. Capsule compressed, acute. — If. Aug. — Sept. Wet places. 

 12—18 inches. 



