-u8- 
of the bulrush ( Scirpu3 occldentalis (Wats.) Chase; then 
comes a zone of Equisetum fluviatlle L. (pipes) covering 
a large area. The inner portion of the zone consists of 
a mixture of Glyoeria borealis (Nash ) Batohelder (northern 
manna grass), Leersia oryzoides (L.) Sw. (rice cutgrass), 
and along the muddy shore Eleocharis palustris (L.) R. & 
S., Acorus Calamus L. (sweet flag), Dulichium arundinaceum 
(L.) Britton, Polygonum amphibium L. (water smartweed), 
Glyoeria canadensis (Miohx. ) Trin. (rattlesnake grass), 
Solypus atrovirens Muhl., Eleooharis obtusa (Willd.) Schultes 
(blunt spike-rush) and Saglttaria latifolia L. form& Gracilis 
(Pursh) Robinson, apparently the common form in northern 
Michigan. The immediate shore is fringed with clumps of 
Salix lucida , interspersed with open areas covered with 
Oalamagrostis canadensis (Miclix.) Beauv. (bluejoint). Logs 
lying almost concealed tell the story of flooding at this 
point; this is also shown by standing specimens of Alnus 
inoana and Salix petiolaris , dead above, but making vigor¬ 
ous gew growths at the base. 
In the shallow water bordering the sandy 
beaches, the rushes are often accompanied by areas of pipe- 
wort ( Eriocaulon artioulaturn (Huds.) Morong. This may 
produce unusually long stems when growing with Soirpus 
occidentalism Among the commoner species occurring on the 
