DATES OF PUBLICATION - VOLUME 27 
PN Se hadadoaee vamena tae cdaersyaxaasiod uae einueneciaseies March 6, 1980 
PU ee ccs ia ens arses dass ens aes ee en css March 28, 1980 
POs Broa gessiacnuveenaciuaueneinoeunssapatswacicsnmcdes May 25, 1980 
NOS. 7-9 ..cccccccccsccccecccceccecccceceecsnceecuceeseevevacs June 16, 1980 
PVs A piseauccaaeeaana vents nesucrcssvceeveurisadaecouens October 28, 1980 
CORRECTION 
Page 177: Fifth line from bottom should read: 
aa. Petals never mucronate; plants rhizomatous. .... 14. S. 
brevilabris alliance 
