1921] NATURAL SCIENCES OF PHILADELPHIA. 477 



Corolla pale lavender, deeper in color near margin of lobes, and 

 within on the antero-lateral ridges with short yellow hairs. Flower- 

 ing from May to September, and soon ripening fruit. 



Swamp and stream margins, especially where shaded, loam soil; 

 probably most prevalent in the upland of Arkansas and eastern 

 Oklahoma, entering the Coastal Plain of Louisiana and north- 

 eastern Texas, especially in bottom-lands. Ranges from New 

 Brunswick and Ontario to Wisconsin, Kansas, Florida and Texas; 

 also in the West Indies and South America. 



Arkansas. Poinsett: Marked Tree, Bush 141 (U, Y). 



Oklahoma. Ottawa: Miami, Stevens 2313 (U). 



Louisiana. Morehouse: Mer Rouge, Bush 143 (Y). Rapides: 

 Alexandria, Ball 473 (U, Y). West Carroll: , Moseley (U). 



Texas. Bowie: Texarkana, Heller 4176 p. p. (Y). 



2. Hysanthes inaequalis (Walt.) Pennell. 



Gratiola inaequalis Walt., Fl. Carol. 61. 1788. Type not verified, but is 

 doubtless from lower South Carolina where the plant here considered 

 is frequent. 



Gratiola brevifolia Raf., Atl. Journ. 1: 176. 1833. " Texas [or] Arkansas, in 

 my herbarium. ' ' Type not known to exist. The small incurved purplish 

 corolla would indicate this genus, and the short ovate leaves with pedicels 

 longer than these, this species. Evidently but a scrap of a plant, or the 

 plant would not have been described as simple. 



Hysanthes inaequalis (Walt.) Pennell, in Torreya 19: 149. 1919. 



Corolla as in I. dubia. Flowering from April to September, and 

 soon ripening fruit. 



Swamps and pond-margins, in loam or more usually sandy soil, 

 frequently in open situations about pineland pools, through -the 

 Coastal Plain of Arkansas, Louisiana and eastern Texas; inland in 

 eastern Oklahoma and central Texas, to the Burnet Metamorphic 

 Region and even to Tom Green County. Ranges from Massachus- 

 etts to Florida and Texas, inland westward to Missouri and Colorado; 

 also in the Pacific Coast states, Mexico, West Indies, Central and 

 South America. Intergrades with Hysanthes dubia. 



Arkansas. Benton , Plank (Y). Hempstead: Fulton, 



Bush 1036 (U). Jefferson: , Eggert (Y). 



Oklahoma. Payne: Perkins, Waugh 26 (U); Stillwater. Wash- 

 ington: Capon, Stevens 21153^ (U). 



Louisiana. Calcasieu: Lake Charles, Plank 41 (U). 



Texas. Austin: Kenney, PenneJl 10310 (A, T, Y); Sealy, 

 Pennell 10296 (H, U, Y) ; Wallis, Pennsll 10265 (M, Y). Bowie; 

 Texarkana, Heller 4176 p. p. (U). Burnet: Fairland, Pennell 10476 



