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2004 - 200 of 211601 results
Phragmites, ripe fruits on stem
Physalis
Physalodes
Physcia caesea
Physcia caesea
Physcia caesea
Physcia obscura on aspen
Physcia stellaris
Physcia stellaris
Physcia stellaris
Physcia stellaris
Physcia stellaris, enlarged
Physocarpus opulifolius in flower
Physocarpus opulifolius leaf and fruit
Physostegia virginiana
Physostegia virginiana
Physostegia virginiana, near
Picea cones, white and black
Picea glauca leaves
Picea mariana leaves and cones
Picea mariana swamp near Connecticut Warbler's nest
Picea pungens
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
Plantago major leaf spike
Plantago purshii
Plantago purshii
Plant, in ground, showing leaves and flower
Plant, in ground, showing leaves and flower
Plant succesion on the rocks
Plant succession on rocks
Plant succession on rocks
Plant succession on rocks
Plant succession on rocks
Plant succession on rocks
Plant succession on rocks, blueberry in flower, close up
Plant succession on rocks showing lichens, etc.
Plant succession on rocks showing lichens, mosses
Plant succession on rocks with blueberry in flower
Plant succession on the rocks
Plant succession on the rocks
Plant succession on the rocks
Plant succession on the rocks
Plant succession on the rocks
Plant succession on the rocks
Plant succession on the rocks
Plant succession on the rocks near Palisade Head on Lake Superior
Plant succession showing Poplars and Willows on the North Shore after a fire
Plant succession showing Poplars and Willows on the North Shore after a fire
Platanthera lacera
Pleurotus ostreatus
Pleurotus ostreatus