Northern Maidenhair Fern #1
Science Stock Photography
Unfolding Fern
Perennou Nuridsany
Fern Sporangia
Perennou Nuridsany
Male Fern Sporangia, Sem #2
Ted Kinsman
Male Fern Sporangia, Sem
Ted Kinsman
Male Fern Sporangia, Sem #3
Ted Kinsman
Male Fern Sporangia, Sem #1
Ted Kinsman
Fertile Horsetail
Perennou Nuridsany
Eagle Fern
Perennou Nuridsany
Ostrich Fern Fronds
Per-Olov Eriksson
Fern, X-ray #3
Ted Kinsman
Lichens, Liverworts And Mosses
Gregory G. Dimijian, M.D.
Giant Horsetail
Dr. Antoni Agelet
Downward Growing Ferns, Idaho
Theodore Clutter
Ferns In Cascades National Park, Wa
Theodore Clutter
Sadleria Fern Hawaii
Greg Dimijian
Deer Fern, Spain
Dr. Antoni Agelet
Intermediate Wood Fern
Science Stock Photography
Cinnamon Fern #1
Science Stock Photography
Young Fern Frond
Paul Whitten
Hawaiian Rainforest
Gregory Dimijian MD
Sedge Horsetail
Frank Teigler
Sadleria Fern, Hawaii #1
Greg Dimijian
Fern, X-ray #2
Ted Kinsman
Fern, X-ray #5
Ted Kinsman
Broad Beech Fern
Science Stock Photography
Harts Tongue Fern
Science Stock Photography
Fern Fiddlehead
Perennou Nuridsany
Water Horsetail
Perennou Nuridsany
Fiddlehead #3
Paul Whitten
Fiddleheads #1
Paul Whitten
Fern Close Up, Cork, Ireland
James Steinberg
Petrified Wood, Close #12
Mark Windom
Horsetail Strobili
Meckes/ottawa
Clubmoss
Science Stock Photography
Brauns Holly Fern
Science Stock Photography
Northern Oak Fern
Science Stock Photography
Hoh Rain Forest
Joseph Sohm
Petrified Wood, Close #9
Mark Windom
Marginal Wood Fern
Science Stock Photography
Fiddlehead #1
Paul Whitten
Fern Fiddlehead
Paul Zahl
Asterotheca Fossil
Louise K. Broman
Fern Frond
Martin Shields
Hoh Rainforest, Washington
Brenda Tharp
Fern, X-ray #4
Ted Kinsman
Northern Maidenhair Fern
Science Stock Photography
Cinnamon Fern
Science Stock Photography