100 
TETfcANDRiA MONo&YNiA. Centaurella. 
uniflora. 
aestivalis. 
autumnalis. 
pulchellum. 
corniculata . 
longioribus, stylo germine longiore. Mich.fl.amer. lt 
/>•98. 
Icon. Mich. I. c. t. 1 2. /. 2. 
fi, C. pusilla, caule unifloro. 
In mossy swamps: Virginia to Georgia. ©. May — July. 
v. v. Var. fi v. s. in Herb. Lyon. About five inches 
high; the flowers white, and larger than the rest. The 
variety fi may be a distinct species ? 
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. ] ; the calyx very short. 
3. C. caule subramoso, pedunculis oppositis, inferioribus 
ramosis, laciniis corollae ovalibus acutis calyce vix lon- 
gioribus, stylo brevissimo. 
C. paniculata. Mich.fl. amer. 1. p. 98. 
Bartonia tenella. Muhlb. in litt. 
Sagina virginica. Willd. sp. pl. 1. pff ig. 
Icon. Mich. l. c.t. 12. f. 1 . 
In mossy swamps, in inundated grassy places : New 
England to Carolina, common. ©. July — Sept, v.v.; 
v. s. in Herb. Gronov. sub nomine Sagina caule erecto 
subnudo, floribus oppositis. Sagincc affinis planta mi- 
nima , floribus albis. Clayt. MSS. 64g. About a foot 
high, sometimes quite simple and very small ; flowers 
small, greenish-white. 
125. EXACUM. Gen.pl. 185. 
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. filiforme very 
much. 
120. SWERTIA. Gen. pl.44g. 
1. S. corollis campanulatis corniculatis : cornibus deflexis, 
foliis ovatis, ramis brevibus. 
S. corniculata. Willd. sp. pl. 1. p. 1330 ? 
In swamps of Canada and round the lakes of the western 
part of the United States, g . July. v.v. Flowers 
greenish yellow. The Siberian plant differs from the 
