h 



Y\o. 6BO ACKNOWLEDGEMENTS 



We wish to thank Drs. Harold St. John and Ronald L. Stuckey for 

 their helpful comments on the manuscript. We are also grateful to the 

 curators of the following herbaria for use of their collections: BOSC, 

 BRU, CONN, CUW, GH, HNH, KIRI, MASS, MAINE, NCBS, NHA, 

 NEBC, VT, YU. A special thanks is extended to Pamela Bruns who 

 prepared the illustrations. 



Programs of the New Hampshire Agricultural Experiment Station are open to all 

 persons without regard to race, color, national origin or sex. The University of New 

 Hampshire is an Affirmative Action/Equal Opportunity Employer. 



