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Low Spine Tubuliflorae

There are three main pollen grains in the low-spine tubuliflorae category that are seen in the Rocky Mountain Region, Ambrosia, Artemisia and Centaurea as seen below.

Ambrosia acanthicarpa

  • Spheroidal to oblate spheroidal (Kapp)

  • Tricolpate, furrows short and slightly poroid (elongated pore), pore  indistinct 

  • Tectate

  • Echinate (broad-based and short)

  • ~ 15 Microns

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Artemisia cana

  • Prolate Spheroidal

  • Tricolpate, furrows broad and expanded, pore distinct or obscure

  • Tectate, exine stratified

  • Micro echinate 

  • ~ 15-20 Microns

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Centaurea 

  • Oblate, subprolate (Kapp)

  • Tricolporate, furrow smooth to slightly verrucate (Kapp)

  • Tectate

  • Coarse subtectate baculae (Kapp)

  • ~ 20 Microns

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©2020 by CU Denver Bee Project.

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