Rhodora Rhododendron Canadense
Andrew J. Martinez
Almond Orchard In Bloom #1
Ron Sanford
Parasitic Dodder Plant
Garry DeLong
Wild Carrot Root Section
M. I. Walker
California Poppies And Red Owl Clover
Brenda Tharp
Rare Desert Snow On Saguaro Cactus #7
Craig K. Lorenz
Geranium Regal Rose Bicolor
Bonnie Sue Rauch
Geranium Regal Rose Bicolor #2
Bonnie Sue Rauch
Live Oak At The Alamo, Texas
Ron Sanford
Pink Elephants Head
James Steinberg
Honey Mesquite Seed Pods
Ken Brate
Dicot Stem And Monocot Stem Cross
Science Stock Photography
Dicot Leaf Epidermis With A Stomate, Lm
Science Stock Photography
Dicot Stem Cross Section, Lm
Science Stock Photography
Dicot Stem Cross Section. Lm #1
Science Stock Photography
Dicot & Monocot Stem Cross Sections
Science Stock Photography
Wild Lupine Lupinus Sp
Ron Sanford
Oak Tree Shadows
Sean Bagshaw
Tilia Stem 3 Years Old
Garry DeLong
Zinnia Flower, X-ray #4
Ted Kinsman
Rare Desert Snow On Saguaro Cactus #8
Craig K. Lorenz
Pacific Madrone Tree Bark
Ron Sanford
Pacific Madrone Bark
Ron Sanford
Azure Bluets
John W. Bova
American Chestnut
Ted Kinsman
English Ivy
Raymond Cramm/Okapia
Monocot & Dicot Stems
Gary Retherford
Monocot-dicot Comparison, Lm
Garry DeLong
Monocot-dicot Comparison
Martin Shields
Balsamroot in Snow
Hal Horwitz and Photo Researchers
Jerusalem Artichoke #2
Tim Holt
California Poppy
Dennis Flaherty
Pumpkin Root Section
M. I. Walker
Milk Thistle Plant #2
George Mattei
Red Snapdragon
John Kaprielian
Leaf Veins
Winton Patnode
New England Asters
Jeanne White
Milk Thistle Plant #1
George Mattei
Capsella Bursa-pastoris
Biology Pics
Milk Thistle Plant
George Mattei
Balsamroot in Snow #1
Hal Horwitz and Photo Researchers
English Rose
Bonnie Sue Rauch and Photo Researchers
Mullein #2
Science Source
Dandelion Seed Head
Photo Researchers, Inc.
Willow Root Branch
Omikron
Sacred Lotus Nelumbo Nucifera
Ted Kinsman
Blue Iris Blooming
Ted Kinsman
Close-up Of Jimsonweed Flower
Ted Kinsman
Blue Iris Blooming #1
Ted Kinsman
Blue Iris Blooming #2
Ted Kinsman
Thorns On A Rose Stem #1
Ted Kinsman
Red Rose Blooming
Ted Kinsman
Blue Iris Blooming #7
Ted Kinsman
Waterlilies In A Garden Pool
Ted Kinsman
American Lotus Nelumbo Lutea Opening
Ted Kinsman
Blue Iris Blooming #8
Ted Kinsman
Red Rose Blooming #2
Ted Kinsman
Blue Iris Blooming #9
Ted Kinsman
Blue Iris Blooming #14
Ted Kinsman
Waterlily Opening Part Of A Series #8
Ted Kinsman
Coffee Seedling #1
Ted Kinsman
Cape Blue Waterlily Nymphaea Capensis #1
Ted Kinsman
Waterlily Opening Part Of A Series #10
Ted Kinsman
Thorns On A Rose Stem #2
Ted Kinsman
Blue Iris Blooming #18
Ted Kinsman
Leaves Of Diviners Sage, Underside View
Ted Kinsman
Leaf Of A Coffee Plant Coffea Sp #1
Ted Kinsman
Basswood Stem
M. I. Walker