A GUIDE AND KEY TO AQUATIC PLANTS 



61 



67, Stems with sheaths (ocreae) just above attachment 68. 



point of leaves. 

 67. Stems without sheaths 69. 



68. Plant with broad leaves, many basal; flowers Rumex, p. 113. 



stalked and drooping (fig. 60) . 

 .68. Plant with narrower leaves, none basal; flow- Polygonum, p. 114. 



ers sessile, in terminal spikes (fig. 61). 



Figure 60. 



FlUGRE 61. 



