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Picea pungens cones
Picea pungens leaf
Pier and Bulrushes on Island Lake
Pike fishing at Bald Eagle Camp
Pilea pumila leaf mosaic
Pill gall of Quercus coccinea
Pine and Spruce cones
Pine-clad rock ledge near Taylor's Falls
Pine cone gall of Salix
Pine forest
Pine seed, diagram showing embryo, endosperm, etc.
Pinguicula vulgaris clump
Pinguicula vulgaris clump
Pinus banksiana bark
Pinus banksiana cones
Pinus banksiana forest in Itasca State Park
Pinus banksiana leaves
Pinus banksiana, trunk and bark character
Pinus resinosa
Pinus resinosa (Pinus hartwegii) along the Jefferson Highway in Itasca State Park
Pinus resinosa (Pinus hartwegii) at Chase's Point Scenic Park
Pinus resinosa (Pinus hartwegii) at Chase's Point Scenic Park
Pinus resinosa (Pinus hartwegii) bark close-up
Pinus resinosa (Pinus hartwegii) bark flakes
Pinus resinosa (Pinus hartwegii) bark flakes
Pinus resinosa (Pinus hartwegii) forest and automobile trail
Pinus resinosa (Pinus hartwegii) forest and automobile trail
Pinus resinosa (Pinus hartwegii) leaves
Pinus resinosa (Pinus hartwegii) on Cass Lake, interior of grove
Pinus resinosa (Pinus hartwegii) on Norway Beach on Cass Lake
Pinus resinosa (Pinus hartwegii), trunk and bark character
Pinus strobus (Strobus strobus) and Dr. Hayden
Pinus strobus (Strobus strobus) and Dr. Hayden
Pinus strobus (Strobus strobus) and Pinus resinosa (Pinus hartwegii) on Jefferson Highway
Pinus strobus (Strobus strobus) and Pinus resinosa (Pinus hartwegii) on Jefferson Highway
Pinus strobus (Strobus strobus) bark, near
Pinus strobus (Strobus strobus) bark, near
Pinus strobus (Strobus strobus) cones
Pinus strobus (Strobus strobus) cones
Pinus strobus (strobus strobus) leaves
Pinus strobus (Strobus strobus) on the Vermilion River
Pinus strobus (Strobus strobus), trunk and bark character
Pistillate catkins of the Populus deltoides
Pistillate flowers of Populus deltoides, enlarged
Piston apparatus, lotus flower
"Pitting" of shortgrass near Keota, Colorado
"Pitting" of shortgrass near Keota, Colorado
Plantago major
Plantago major
Plantago major leaf spike