T. Gosliner, S. Whelan, M. Hannibal, S. Imazumi
Orange flower petals with purple/pink filaments
Pont del Diable, Tarragona, Spain, 16 May 2013
Scarlet pimpernel (Anagallis arvensis; also known as red pimpernel, red chickweed, poorman's barometer, shepherd's weather glass or shepherd's clock) is a low-growing annual plant found in Europe, Asia and North America. Although traditionally included in the family Primulaceae, Anagallis is now considered to be better placed within the related family Myrsinaceae (KÃƒÂ¤llersjÃƒÂ¶ et al., 1999). The barometer (weather glass) common names have their origin in the fact that the flowers close when atmospheric pressure decreases and...