Instant Flower

Focus your device camera at a flower and InstaFlower will tell you its name along with showing you the match.

Common name is shown in iPhone, and both common and botanical name are shown in iPad.

Currently, app recognizes pretty well the following flowers:
Alpine aster
Anemone 
Annual honesty (Lunaria)
Anthurium
Bee balm (Monarda)
Barbeton daisy (Gerbera)
Black-eyed Susan (Rudbeckia)
Blanket flower (Gaillardia)
Bromelia
California poppy
Clematis
Cyclamen 
English marigold
Fuchsia 
Gaura 
Hibiscus 
Hippeastrum
Mexican aster
Moon orchid (Phalaenopsis)
Ornamental kale and cabbage
Ornamental pepper
Pansy 
Petunia 
Pincushion flower
Purple coneflower 
Rocktrumpet (Mandevilla)
Rose
Yarrow 
Zinnia

Occasionally, with a poorer stability, it may recognize also:
Begonia
Campanula
Chrysanthemum
Dahlia
Daylily
Gazania
Hydrangea
Kalanchoe

We are planning to add more flowers in the future.