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Primula elatior (78)
mikou Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 869 W: 68 N: 1479] (6093)
Family: Primulaceae
Genus: Primula
Primula is a genus of 400-500 species of low-growing herbs in the family Primulaceae. They include primrose, auricula, cowslip and oxslip. Many species are grown for their ornamental flowers. They are native to the temperate Northern Hemisphere, south into high altitude tropical mountains in Ethiopia, Indonesia and New Guinea, and are also found in temperate southern South America.
Perennial primulas bloom mostly during the spring; their flowers can be purple, yellow, red, pink, or white. Generally, they prefer filtered sunlight. Many species are adapted to high alpine climates.
Both the common name and scientific name refer to it being the first (prime) "rose" to open in spring.
Primroses are used as food plants by the larvae of some Lepidoptera species including Large Yellow Underwing, Lesser Broad-bordered Yellow Underwing, Setaceous Hebrew Character and Silver-ground Carpet.
Some species of Primula are commonly known as polyanthus.

Species: Primula elatior
(The Oxlip, Prvosenka vyšší)
Primula elatior, the oxlip, is a flowering plant in the genus Primula, found in damp woods and meadows throughout Europe as far north as southern Sweden. In the British Isles, it is found only in the east, and mainly in East Anglia.
It is a low growing herbaceous perennial plant with a rosette of leaves 5-15 cm long and 2-6 cm broad. The deep yellow flowers are produced in the spring between March and May; they are in clusters of 10-30 together on a single stem 10-30 cm tall, each flower 9-15 mm broad.
It may be confused with the closely related Primula veris (cowslip) which has a similar general appearance although the oxlip has larger, pale yellow flowers more like a primrose, and a corolla tube without folds.
(source: Wikipedia encyclopedia)

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mikou Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 869 W: 68 N: 1479] (6093)
Curves
Edited by:lgfoto Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 194 W: 13 N: 279] (1536)

I just slightly adjusted curves.