262 SCROPHULARlACEi?^. 



1. M. ringens Linn.: erect, smooth; leaves sessile, lanceolate, acumi- 

 nate, serrate ; peduncles axillary, opposite, longer than the flowers ; teeth 

 of the calyx oblong, acuminate. 



Wet grounds. Can. to Car. W. to Miss. Aug. %.. — Stem 2 feet high, an- 

 gular, somewhat branched. Leaves a little clasping. Flotvers large, pale purple. 



Cemmon Monkey-fiower. 



2. M. alalus Linn. : erect, smooth ; stem winged ; leaves petioled, ovate, 

 acuminate, toothed-serrate ; peduncles axillary, opposite, shorter than the 

 flowers ; teeth of the calyx round, mucronate. 



Wet meadows. N. Y. to Car. Aug. %. — Stem 2 feet high, with vvinged 

 angles, somewhat branched. Leaves tapering at base into a short petiole. 

 Flouvers pale blue. Abundant in the western part of New York. 



Stem-winged Monkey-jUmer. 



8. HERPESTIS. G«r^.— Herpestis. 

 (From the Greek IpnriaTt];, a creeper.) 



Calyx 5-parted, unequal. Corolla bilabiate ; upper lip emar- 

 ginate or 2-lobed ; lower one 3-lobed. Stamens 4, didynamous, 

 ascending. Capsule bisulcate, 2-celled, 2-valved. Seeds nu- 

 merous, small. 



1. H. Monnieria Humb.: creeping, smooth; leaves cuneate-obovate, 

 entire or obscurely crenate near the summit ; pedicels with two bracteoles 

 near the end ; lower segment of the calyx ovate. H. cuneifolia Pursh. 

 Monniera cuneifolia Mich. 



Inundated banks. Penn. to Car. Pursh. From Car. to Buenos Ayres and 

 Chili. D. C. Aug. %. — Stem prostrate, creeping. Leaves opposite, thick, 

 somewhat clasping, variable in size and form. Flowers very small, pale purple, 

 solitary, axillary, on peduncles about as long as the leaves. 



Wedge-leaved Herpestis. 



2. H. ampUxicavlis Pursh : stem villous ; leaves clasping, ovate, obtuse, 

 entire, nerved, smooth or sparingly pubescent beneath ; pedicels solitary, 

 shorter than the calyx, Monniera amplexicaulis Mich. 



In ponds and ditches; N. J. to Louis. D. C. Car. and Geor. Pursh. June — 

 Aug. %.-:— Leaves 6 — 9 lines long. Flowers blue, larger than in the preceding. 



Clasping-leaved Herpestis. 



9. GRATIOLA. Linn.— Hedge Hyssop. 



(From the Latin gratia, grace or favor ; in allusion to its supposed medicinal 

 virtues.) 



Calyx 5-parted, often with 2 bracts at the base. Corolla 

 tubular, subbilabiate ; upper lip entire or shortly bifid ; lower 

 one 3-lobed, the palate not prominent. Stamens 4, 2 sterile. 

 Stigma 2-lobed. Capsule ovate, 2-celled, 2-valved, the valves 

 at length 2-cleft. (4-valved. D. C.) 



1. G. aWea ]\9iihl.: smooth; stem assurgent; leaves linear-oblong, sub- 

 clasping, obscurely-toothed ; segments of the calyx linear-lanceolate, equal ; 

 sterUe filaments minute. G. officinalis Mich. G. Caroliniensis Pers. 



Sandy swamps. Mass to Flor. July, Aug. %. — Root creeping. Stem assur- 



