American Chestnut (castanea Dentata)
Dr. Nick Kurzenko
Male Pine Cone
Antonio Romero
Male Pine Cone #1
Antonio Romero
Male Beech Tree Flowers
Bruno Petriglia/science Photo Library
Begonia (begonia Sp.)
Ian Gowland/science Photo Library
Germinating Pollen (sauromatum Guttatum)
Dennis Kunkel Microscopy/science Photo Library
Bottle Gourd Flower
Francoise Sauze/science Photo Library
Brown Algae (fucus)
Science Stock Photography
Castor Oil Fruits (ricinus Communis)
Dr. John Brackenbury/science Photo Library
Castor Oil Fruits (ricinus Communis)
Maria Mosolova/science Photo Library
Female Begonia (begonia Tuberosa) Flower
Maria Mosolova/science Photo Library
Atlas Deodar (cedrus Atlantica)
Brian Gadsby/science Photo Library
Castor Oil Plant (ricinus 'carmencita')
Dan Sams/science Photo Library
Fucus Brown Alga
Nigel Downer/science Photo Library
Virginia Pine (pinus Virginiana)
Dr. Nick Kurzenko
Pine Tree Pollen Grains
Antonio Romero
Hazel Catkins #1
Gustoimages/science Photo Library
Germinating Pollen (sauromatum Guttatum) #2
Dennis Kunkel Microscopy/science Photo Library
Germinating Pollen (sauromatum Guttatum) #3
Dennis Kunkel Microscopy/science Photo Library
Begonia (begonia Tuberosa) Flower
Maria Mosolova/science Photo Library
Castor Oil Fruits (ricinus Communis) #1
Dr. John Brackenbury/science Photo Library
Fucus Brown Alga Male Conceptacle
Nigel Downer/science Photo Library
Pollination Of Hazel
Dr Jeremy Burgess/science Photo Library
Hazel Catkins #1
Alex Hyde
Male Pine Cone #3
Antonio Romero
Male Begonia Flower
Maria Mosolova/science Photo Library
Hazel Catkins
Gustoimages/science Photo Library
Male Begonia (begonia Tuberosa) Flower
Maria Mosolova/science Photo Library
Lakeside Plants
Rachel Warne/science Photo Library
Begonia (begonia Tuberosa) In Flowers
Maria Mosolova/science Photo Library
Castor Oil Plant (ricinus Communis)
Adrian Thomas/science Photo Library
Mountain Alder (alnus Sp.)
Bob Gibbons/science Photo Library
Pollination Of Hazel #1
Dr Jeremy Burgess/science Photo Library
Begonia (begonia Tuberosa) In Flower
Maria Mosolova/science Photo Library
Hazel Catkins #2
Gustoimages/science Photo Library
Male Pine Cone #2
Antonio Romero
Dwarf Mountain Pine Tree (pinus Mugo 'corley's Mat')
Brian Gadsby/science Photo Library
Female Butternut Squash Flower
David Nunuk/science Photo Library
Germinating Pollen (sauromatum Guttatum) #1
Dennis Kunkel Microscopy/science Photo Library
Female Butternut Squash Flower
David Nunuk
Flower Anatomy, Sem #1
Steve Gschmeissner
Female Butternut Squash Flowers
David Nunuk
Flower Anatomy, Sem
Steve Gschmeissner