Photo, picture:
Die Schlankfruechtige Nachtkerze oeffnet ihre Blueten innerhalb weniger Minuten in einer fliessenden Bewegung - (Foto Schlankfruechtige Nachtkerze in einer ehemaligen Kiesgrube)
The Evening-Primrose opens its flowers within a few minutes in a continuous movement - (Photo Evening-Primrose in a former gravel pit)
Oenothera pycnocarpa

Gallery overview