Hk, Fok Dave 
Page 10, line 5, for three read several. 
Page 18, line 16, for Lamna read Lemna. 
Page 61, line 20, for pruinosa read pruinosum. 
Page 66, line 4, for Rutamurarie read Rutamuraria. 
Page 67, line 4, for Boutelona read Bouteloua. 
Page 68, line 17, for glancodea read glaucodea, 
Page 77, line 2, for oppressed read appressed, 
