330 
CRYPTOGAMIA HYDROPTERIDES. 
HYDROPTERIDES. 
ISOETES, ISOETES. H.K. v.p. 530. 
H. 2/. V lacustris, Quill-wort. Engl. hot. t. 1084.- Britain. v-x. 
PILULARIA, PILL-WORT, or Pepper-grass. H. K. v. p. 530. 
II, % A globulifera, globuliferous. Engl. hot. t. 521. Britain. ri-ix. 
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