(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.
Brief Summary. Papaver somniferum, opium poppy, is an annual herbaceous plant in the Papaveraceae (poppy family) that originated in southeastern Europe and western Asia, and are now widely cultivated in Europe, Asia, China, and North Africa for their seeds, which are used in baking, as a condiment, and for their edible oil.
The poppy (Papaver rhoeas L.) is an ancient flowering plant, long desired by gardeners in a range of landscape situations. Learning how to grow poppies allows you to use their beauty in many flower beds and gardens. Planting poppies is simple and rewarding when their single and double blooms appear in cooler seasons.ow to Grow Poppies. Poppy plant care involves the deadheading of spent flowers, resulting in more prolific blooms of the poppy plant. Poppy flowers need limited watering once they have settled into their location. Too much water can result in tall, leggy, unattractive growth of the growing poppy flower.