Class XIV. Order II. 153 



GERARDIA PURPUREA. L. Purple Gerardia. 



Stem with many opposite branches ; leaves 

 narrow-linear; flowers scattered, purple, sub-ses- 

 sile. Mich. 



An annual species, much smaller than the preceding. Stem 

 erect, smooth, branching. Leaves opposite, linear, entire, curl- 

 ing when the plant droops. Flowers purple, frequently oppo- 

 site, on short, peduncles. Calyx teeth acute. Common in pas- 

 tures and road sides in moist ground. August. Annual. 



190. MIMULUS. 



MIMULUS RINGENS. L. Monkey flowzr. 



Leaves lanceolate, acuminate, glabrous, sessile; 

 peduncles longer than the flower. Willd. 



A handsome plant, fond of wet soils, where it attains the 

 height of two feet and upward. Stem erect, smooth. Leaves 

 opposite, closely sessile, serrate, tapering to an obtuse point. 

 Peduncles axillary, curving upwards. Calyx tubular, with five 

 acute angles, and as many pointed teeth. Corolla much longer 

 than the calyx, blue, contracted at the mouth, with spreading 

 segments. July, August. Perennial. 



191. CHELONE. 



CHELONE GLABRA. L. Snake-head. 



Glabrous ; leaves oval or lanceolate, unequally ^ . 

 serrate ; flowers spiked. Mich. * "' e 



Found in brooks and wet ground, where it forms bunches, 

 and rises two or three feet. Stem smooth, bluntly foui corner- 

 ed. Leaves opposite, lanceolate, acuminate, dark green and 

 polished above. Flowers in a terminal spike, a few only ex- 

 panding at once. Calyx nearly sessile, with five short rounded 

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