214 DICOTYLEDONOUS. 



with the tube globose, the border 5.cleft. Stamens 4, didy- 

 namous. Capsule 2-celled, many seeded. 



1 S Marilandica. 5'iem erect, angled, glabrous, much branched. Leaves 

 opposite, cordate, ovate, lanceolate, serrate- Petioles ciliate. Flowers jn 

 compound, terminal panicles. Corolla twice as long as the calyx ; the 4 up- 

 per segments erect, the lower one reflexed. 



Greenish, tinged with purple. %■ Aug. — Oct. Rich soils. 2-4 ft. 



Genus IV ANTIRRHENUM, 



Calyx gibbous at the base, deeply 5- parted, with lanceolate, 

 pubescent segments. Corolla ringent, with a short tube bear- 

 ing a spur. Capsule 2-celled, 2-valved. 



1 A Canadense. S/em assurgent, glabrous, simple. Leaves scattered, 

 erect, linear, dotted, alternate on the fertile branches, verticillate on the sterile. 

 Calyx pubescent. The spur of the corolla Ions:, subulate. Seeds angled, 

 Blue. %■ March — April Conunon. 12-18 inches. 



Genus V MIMULUS. 



Calyx prismatic, 5-toolhed. Corolla ringent, with the up- 

 per lip reflexed at the sides ; palate of the lower lip promin- 

 ent. Stamens 4 didynamous. Stigma thick, bifid. Capsule 

 2-celled, many seeded. Seeds minute. 



1 M RiNGENS. Stem erect, glabrous, 4-angled. Leaves opposite, sessile, 

 narrow, lanceolate, acuminate, serrate, glabrous. Flowers axillary on pe- 

 duncles about the length of the leaves ; segments of the calyx subulate ; low- 

 er lip of the corolla 3 lobed, larger than the upper. Seeds numerous, small. 



Pale blue. % July— Sept. 



2 M Alatus. Stem erect, glabrous, square, slightly winged. Leaves 

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

 duncles ; segments of the calyx mucronate. Corolla tinged with yellow. 



JPale blue. % August— Sept. Pine barrens. 1-2 ft. 



Genus VI LINDERNIA. 



Calyx pubescent, 5-leaved. Corolla bilabiate, 4-cleft ; the 

 upper lip short, reflected, e.marginate ; the lower lip 3-cleft, 

 witli the segments ov !, obtuse. Stamens 4, the two longest 

 sterile. Capsule 2-vdlved, 2-celled, many seeded. 



1 L Dilatata. Stem procumbent, smooth, square. Leaves oblong, ovate, 

 amplexicaule, sparingly toothed. Flou-ers axillary, on square peduncles, 

 covered with glandular hairs. Corolla resupinale. Stigma compressed. 



Pale purple. © May— Sept. Around ponds. 6-8 in. 



2 L Attenuata. Stem procumbent, or erect, square, glabrous. Leaves 

 lanceolate, and obovate, narrowed at the base. Flowers on erect peduncles, 

 shorter than the leaves, axillary, solitary. 



Purple. <£) May — June. Wet places. 6-8 in. 



Genus VII SCHWALBEA. 

 Calyx tubular, ventricose, obliquely 4-cleft, upper segment 



