(1834â1908), Dutch ophthalmologist. Snellen was director of an eye clinic at Utrecht. In 1862 he introduced a test for measuring the acuteness of vision which consisted of printed letters or words in type of various sizes.
The poppy of wartime remembrance is Papaver rhoeas, the red-flowered corn poppy. This poppy is a common weed in Europe and is found in many locations, including Flanders, which is the setting of the famous poem In Flanders Fields by the Canadian surgeon and soldier John McCrae.
The stem of the flower grows to approximately 5 to 20 inches tall, with teal colored leaves sprouting from its base. The plant is prolific with numerous dark-colored seeds held in the center of the flower within slender, ribbed, single-celled seed capsules. Plant Parts Used: Root, leaves and seeds.n addition it has also been found in southern France, Australia and Chile. Itâs the California state flower. Plant Description: The flower is usually golden orange, hence its common name âgolden poppy.â The receptacle has an expanded rim that holds the young bud with two sepals until it blooms.