Evolutionary Tree of Plants II

Credit: University of Colorado

Pollen Morphology and Evolution Lab

Research Question:  Are all Oregon native plants closely related?

Hypothesis:  We predict that Oregon native plants are closely related in terms of durability and climate tolerance because they have evolved in a common environment.

Pollen Information

Common Name	Scientific Name	Pollen Size (μm)	Pollen Type	Number of Apertures	Surface Texture
English Ivy	Hedera helix	25.3 μm	Tricolpate	Two to Three	Reticulate
Salmonberry	Rubus spectabilis	27.5 μm	Tricolpate	Three	Psilate
Douglas Fir	Pseudotsuga menziesii	36.3 μm	Trilete	Three	Reticulate

SEM Image with Added Color- Salmonberry

Evolutionary Tree of Plants

Credit: CSH Press, Genome Research

Light Microscope Salmonberry

Salmonberry / Rubus spectabilis (400x)

Light Microscope Douglas Fir

Douglas Fir / Pseudotsuga menziesii (400x)