246 PROCEEDINGS OF THE ACADEMY OF [DeC, 



Swamps, and stream margins, especially in groves or woodland, 

 loam soil, through the southern Appalachians and the Piedmont, 

 both east and west of the mountains, apparently more frequent 

 northward ; in the Coastal Plain occasional or local, in heavier soils, 

 along river-bottoms and along the coastal bays. Ranges from New 

 Brunswick and Ontario south to northern Florida; also in the West 

 Indies and South America. In the lower Piedmont and Coastal 

 Plain forms transitional to /. inaequalis occur. 



Flowering from May to September, and soon ripening frait. 

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

 within along the antero-lateral ridges with short yellow hairs. 



Pennell (Florida)— 9707. (Alabama)— 9723. 



2. Ilysanthes inaequalis (Walt.) Pennell. 



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

 is from lower South Carolina where the plant here considered is frequent. 

 Walter's species was interpreted as this plant by Elliott, the most critical 

 student of the Carolina flora. 



Gratiola anagallidea Michx., Fl. Bor. Amer. 1: 6. 1803. "Hab. in humidis 

 Carolinae [A. Michaux]." Type not verified. 



Linderniadilatata Muhl.; Ell, Sketch Bot. S. C. and Ga. 1: 16. 1816. "Grows 

 in ditches, around ponds." Type seen in the Elliott Herbarium at the 

 Charleston Museum. It is labeled "Vail Ombrosa," whereas that of 

 L. attenuata bears no definite indication of locality. The first good char- 

 acterization of this species. 



Graiioto ditototo Muhl.; Spreng., Syst. 1:39. 1825. "Carolin[a]." Surely 

 based upon Lindernia dilatata Muhl., but this not cited. 



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



Swamps, loam and more usually in sandy soil, frequently in open 

 situations, pineland pools and edges of hammocks, through the 

 Coastal Plain, frequent or local; extending inland locally into the 

 Piedmont. Ranges from Massachusetts to Florida and Texas; ap- 

 parently also in Colorado, the Pacific Coast states, in Mexico, the 

 West Indies, Central and South America. Intergrades with Ily- 

 santhes dubia. 



Flowering from March to September, and soon ripening fruit. 

 Corolla as in /. dubia. 



Pennell (Florida)— 9649, 9673. (Alabama)— 9768. 



3. Ilysanthes saxicola (AI. A. Curtis) Chapm. 



Lindernia saxicola M. A. Curtis, Amer. Journ. Sci. 44: 83. 1843. "On 

 rocks in the Hiwassee River [North Carolina] [M. A. Curtis]. . . ." 

 Isotype seen in Herb. Columbia University at the New York Botanical 

 Garden. 



Ilysanthes saxicola (M. A. Curtis) Chapm., Fl. S. Un. St. 294. 1860. 



On rocks in rapid mountain-streams, known only from the Hi- 

 wassee River in North Carolina, and from the headwaters of the 

 Savannah River at Tallulah Falls, northern Georgia. 



