32 TKiANDRiA MONOGYNiA. Commelina. 



In shady woods from Pensylvania to Carolina. 1/ . July, 



Aug. V. V. Flowers large. 

 communis. 4. C. foliis ovato-lanceolatis subsessilibus acutis cauleque 



repente glabris, involucris cordatisconduplicatis. Fahl. 



enum. pL 2. p. 170. Willd. sp. pi. 1. p. 249. 

 Icon. Dill. elth. t. 78. /: 89. 

 C. caroliniana. Waltji. car. 68. 

 In sandy lields in Carolina. JValter. 11 . July. v. s. in 



Herb. Walter, 

 erecta. 5. C. foliis ovato-lanceolatis scabris, involucris cucullatis 



turbinatis, caule erecto. f^ahl. enum. pi. 2. p. 1/2. 



Willd. sp.pl. I. p. 251. 

 C. communis, JValt.Jl. car. 68. 

 Icon. Dill. elth. t. yy.f. 88 ? 

 In sandy shady places in Virginia and Carolina, "il . July. 



V. V. Pet. 2. large. 



41. SYENA. Gen. pi. S8. 

 Juvialilis. 1. Syena. Willd. sp. pi. 1. p. 254. 



Mayaca fiuviatilis. Aubl. guj. 1 . p. 42. 

 Icon. Aull. guj. I. c. t. 15. Lam. illustr. 1. t. 36 

 In small rivulets of Virginia and Carolina. 11 . July. 

 V. V, Flowers white, solitary, small. 



42. HETERANTHERA. Beauvois i?i act. soc. amer. 4» 



acuta. 1, H. foliis subrotundo-reniformibus acutis, spathis subtri- 



floris glabris. Fahl. enum. pi. 2. p. 42. Willd. in 

 act. soc. am. h. nat. 3. p. 438. 



Leptanthus reniformis. Mich.^fl. amer. 1. p.25. 



Icon. Beauvois in act. soc. amer. 4. p. 1/3. H. reni- 

 formis. 

 In small rivulets and ditches, on a clay soil, in Pensylva- 

 n'a, Virginia, &c. 1/ . June, July. v. v. Flowers 

 white ; leaves floating. 

 Umoia. 2. H. foliis ovato-oblongis, spathis lanceolatis unifloris! 



f^ahl enum. pi. 2. p. 44. 



Poiitederia limosa. Swartzjl. ind. occid. 1, p. 61I. 



Leptanthus ovaiis. Mich.Ji. amer. 1. p. 25. 



Icon. Mich. I. c. t. 5. J. 1. Sloan, hist. 1. t. l4Q.f. 1. 



On the banks of rivers and small rivulets in the south- 

 western parts of the United States. 1/ . July. v. s. 

 Flowers blue ; leaves erect. 

 graminea. 3. H. foliis omnibus linearibus. Vahl. enum.pl. 2. p. 45? 



Leptanthus gramineus. Mich. Jl. amer. I. p. 25. 



Commelina dubia. Jacq. obs. bot. 3. p. Q. 



