Microscopy of pollen grains (body and air bags, ×360). Picea abies (1), P. canadensis (2), P. pungens (3)

 
 
  Part of: Kishchenko IT, Tikhova MA (2019) Morphology and viability of pollen grains of Picea L. species in the conditions of introduction. Arctic Environmental Research 19(2): 75-80. https://doi.org/10.3897/issn2541-8416.2019.19.2.75