Common Pollen Types at Eagle Lake

 

 

Tall Shrubs

 

Alnus viridis (alder)

  • stephanoporate
     

Alnus incana (mountain alder)

  • stephanoporate
  • arci (internal thickenings) connecting the 4 or 5 protruding pores
  
     

Betula (birch)

  • triporate
  • pores distinctly protruding
  • psilate
  • grain 16-35 µm
  • inner surface of pore margin smooth
  • separation of endexine at base of pore
  • exine thick
     

Ericales (heaths)

  • tetrads
     

Rosaceae

  • tricolporate
  • striate
     
 

MORE

 

GLOSSARY