Class XIV. Order II. 247 



flowers turn black in drying. Dry woods. Very common at 

 Sweet Auburn, Cambridge. August. Perennial. 



GERARDIA PURPUREA. L. Purple Gerardia. 



Stem with many opposite branches ; leaves narrow- 

 linear ; flowers scattered, purple, sub-sessile. Mich. 



An annual species, much smaller than the preceding. Stem 

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

 roughish, curling when the plant droops. Flowers purple, 

 opposite, on very short peduncles. Calyx teeth acute and 

 separated by acute sinuses. Corolla purple, usually without 

 spots on the inside. Stamens woolly ; anthers sagittate. Com- 

 mon in pastures and road sides in moist ground. August. 

 Annual. 



GERARDIA MARITIMA. JVutt. Salt Marsh Gerardia. 



Leaves linear, fleshy ; calyx truncate, upper seg- 

 ments of the corolla fringed. 



Syn. GERARDIA PURPUREA, /3. CRASSIFOLIA. Pursh. 



Stem smooth, with opposite branches. Leaves linear-lance- 

 olate, obtuse, fleshy, veinless, dotted under a magnifier. Flow- 

 ers axillary and terminal on elevated peduncles. Calyx smooth, 

 its segments ending abruptly as if cut off. Corolla purple, dot- 

 ted inside toward the base, its two larger segments ciliate. 

 Stamens hairy ; anthers sagittate. Capsule globose. On salt 

 marshes. July, August. Perennial. Resembles G. purpurea, 

 but is smaller and more fleshy. The truncate calyx is an un- 

 failing mark of distinction. 



GERARDIA TENUIFOLIA. Stalked Gerardia. 



Branching, leaves linear, flowers axillary on stalks 

 longer than themselves. 



Stem erect, smooth with opposite branches. Leaves linear, 

 entire, rough, curled in drying. Flowers opposite on long fil- 

 iform peduncles. Calyx teeth short, acute, separated by obtuse 

 shiuses. Corolla subcampanulate, purple, spotted inside. Sta- 

 mens woolly, anthers sagittate. Low grounds, Cambridgeport. 

 August, September, Annual. Resembles G. purpurea. 



