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  • Prolate

  • Tricolporate, transverse furrows

  • Tectate, exine thick

  • Verrucate to faintly reticulate

  • ~26-50 microns

Heracleum
sphondylium

Lomatium 
ambiguum

  • Prolate

  • Tricolporate

  • Tectate

  • Verrucate to faintly reticulate

  • ~ 25 microns

Lomatium Cous

  • Prolate

  • Tricolporate

  • Tecate

  • Granulate of verrucate

  • ~ 25 microns

Osmorhiza 
occidentalis

  • Prolate

  • Tricolporate

  • Tectate

  • Granulare or verrucate

  • Transverse furrows

  • ~ 25 microns

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