CONTENTS 
I. Francis E. Lrovp. The comparative Embryology of the Rubi- 
aceae. Pp. 1-26. //. 7-4. Issued 26 August 1899; pp. 27-111. 
Pl. 5-15. Issued 15 February 1902. 
2. ALEXANDER W. Evans, The Lejeuneae of the United States and 
Canada. Pp. 113-183: p/. 16-22. Issued 15 February 1902. 
3- ELIZABETH G. BRITTON and ALEXANDRINA TAYLOR. The Life His- 
tory of Vittaria lineata. Pp. 185-211. ۸ 23-31. Issued 30 
August 1902. 
