Tibetan cowslip

Description

Primula florindae, the Tibetan cowslip or giant cowslip, is a species of flowering plant in the family Primulaceae, native to southeastern Tibet, where it grows in huge numbers close to rivers such as the Tsangpo. It is a substantial herbaceous perennial growing to 120 cm (47 in) tall by 90 cm (35 in) wide. In summer the flower stalks rise from basal rosettes of 5–20 cm (2–8 in) long leaves. They bear clusters of 20–40 yellow, pendent, bell-like, delicately scented flowers with a mealy white bloom. The plant was first collected for western horticulture in 1924 by the British botanist Frank Kingdon-Ward, and was named after his wife Florinda. This plant grows best in very moist conditions as its home is the margins of rivers. It is cold-hardy as long as its roots are not allowed to dry out. It has gained the Royal Horticultural Society's Award of Garden Merit. Primula is a genus of herbaceous flowering plants in the family Primulaceae. They include the primrose (P. vulgaris), a familiar wildflower of banks and verges. Other common species are P. auricula (auricula), P. veris (cowslip), and P. elatior (oxlip). These species and many others are valued for their ornamental flowers. They have been extensively cultivated and hybridised (in the case of the primrose, for many hundreds of years). Primula are native to the temperate Northern Hemisphere, south into tropical mountains in Ethiopia, Indonesia, and New Guinea, and in temperate southern South America. Almost half of the known species are from the Himalayas. Primula has over 500 species in traditional treatments, and more if certain related genera are included within its circumscription. Primula is a complex and varied genus, with a range of habitats from alpine slopes to boggy meadows. Plants bloom mostly during the spring, with flowers often appearing in spherical umbels on stout stems arising from basal rosettes of leaves; their flowers can be purple, yellow, red, pink, blue, or white. Some species show a white mealy bloom (farina) on various parts of the plant. Many species are adapted to alpine climates. Primula was known at least as early as the mediaeval herbalists, although first formally described as a genus by Linnaeus in 1753, and later in 1754 in his Flora Anglica. Linnaeus described seven species of Primula. One of its earliest scientific treatments was that of Charles Darwin study of heterostyly in 1877 (The different forms of flowers on plants of the same species).