APPENDIX. 



broader and a deeper green than those of T. reflexa. 

 From Va., and Ky., south. 



A similar low herb common in the south- 

 Smaller Mud 

 Plantain western States, generally found in shallow 



Heteranthera water. The stems with many branches at 

 Umosa the base. The leaves ovate, oblong or 



Violet purple lance-oblong, blunt at the tip, rounded at 



the base or else slightly heart-shaped, 1 

 inch long or less, the stems 2-5 inches long. The spathe 

 or leafy bract encloses but one flower which is usually 

 larger than that of H. reniformis, generally violet-purple 

 but sometimes white. 6-15 inches high. Va., south, and 

 west to Neb. , and La. 



This species is a submerged grasslike 

 grass " plant with a slender stem and translucent 



Heieranthera deep green leaves ; the flowers only reach 

 dubia the surface of the water. Leaves linear, 



Light Yellow flat> sharp-pointed, and finely parallel- 



veined. The spathe one-flowered, the flow- 

 er light yellow, with six narrow divisions and a very 

 long, slender tube, the stamens longer than the style, 

 with arrow-shaped anthers. 2-3 feet high. In shallow, 

 quiet water, from N. E., south, and west to Ore. and 

 Mex. 



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Pogonia ^ dainty and beautiful species with pale 



divaricata magenta-pink or nearly white flowers ; the 



Magena=pink long, narrow sepals a dull greenish brown. 

 May-June There is one oblong lance-shaped leaf, 3-7 

 inches long, borne just above the middle of the stem, 

 and another bractlike one below the flower. 12-20 

 inches high. Marshy land, and wet pine barrens from 

 N. J. to Ga. 



A small plant, with yellow-green flowers 



the Hp f wMch ls crested ver its whole 

 face ; the sepals but a trifle longer than the 



petals. The five smaller, narrower leaves circled as in 

 P. verticillata immediately below the one or t\vo flowers. 

 8-9 inches high. Rare and local. Moist woodlands. 

 Mass., Conn, (rare in Vt.), to N. J., and Pa. 



546 



