lOD TKTRANDRiA MONOGYNiA. Ccntaurella, 



longioribus, stylo gerraine longiore. Mich.fl.amer.l. 



Icon. Mich. I. c.t. 12. /. 2. 

 umflora, ^. c. pusiUa, caule unifloro. 



In mossy swamps: Virginia to Georgia. ©. May — July. 

 V. V. Var. /3 V. s. in Herh. Lyon. About five inches 

 high; the flowers white, and larger than the rest. The 

 variety /3 may be a distinct species ? 

 aestivalis. 2. C. caule simplici, pedunculis oppositis simplicibus, laci- 



niis corollae spathulatis abrupte acutis calyce triplo 

 longioribus, stylo longitudine germinis. 



In mossy swamps : Carolina to Georgia. ©.June — Aug. 

 V. s. in Herb. Enslen. From two to four inches high ; 

 flowers smaller than No. 1 ; the calyx very short. 

 autumnalis. 3. C. caule subramoso, pedunculis oppositis, inferioribus 

 ramosis, laciniis corollae ovalibus acutis calyce vixlon- 

 gioribus, stylo brevissimo. 



C. paniculata. Mich.Ji. amer. I. p. 98. 



Bartonia tenella. Muhlh. in titt. 



Sagina virginica. Willd. sp. pi. I. p.yig. 



Icon. Mich. I. c. t.ll.f.l. 



In mossy swamps, in inundated grassy places : New 

 England to Carolina, common. ©. July — Sept. v. v.; 

 V. s. in Herb. Gronov. sub 7iomine Sagina caule erecto 

 subnudo, Jloribus oppositis. Sagincc affinis planta mi- 

 nima, floribus albis. Clayt. MSS. 04y. About a foot 

 high, sometimes quite simple and very small ; flowers 

 small, greenish-white, 



125. EXACUM. Gen.pl. 185. 



pulchellum. 1. E. corollis quadrifidis, calycibus quadripartitis : laciniis 



subulatis, panicula corymbosa, pedunculis filiformibus. 



Near the sea-coast of New Jersey ; rare. © . Aug. v. v. 



Flowers rose-coloured; resembling E.JHiforme veiy 



much. 



126. SWERTIA. Gen. pi. 449. 



corniculata. 1-S. corollis campanulatis corniculatis : cornibus deflexis, 

 foliis ovatis, ramis brevibus. 



S. corniculata. IVilld. sp. pi. 1. p. 1330 ? 



In swamps of Canada and round the lakes of the western 

 part of the United States. ^ . July. v. v. Flowers 

 greenish yellow. The Siberian plant differs from the 



