Jacaranda mimosifolia is a sub-tropical tree native to south-central South America that has been widely planted elsewhere because of its attractive and long-lasting violet-colored flowers. It is also known as the jacaranda, blue jacaranda, black poui, Nupur or fern tree. Older sources call it J. acutifolia, but it is nowadays more usually classified as J. mimosifolia. In scientific usage, the name "jacaranda" refers to the genus Jacaranda, which has many other members, but in horticultural and everyday usage, it nearly always means the blue jacaranda. In its native range in the wild, J. mimosifolia is listed as Vulnerable by the IUCN. Description The tree grows to a height of up to . Its bark is thin and grey-brown, smooth when the tree is young but eventually becoming finely scaly. The twigs are slender and slightly zigzag; they are a light reddish-brown. The flowers are up to long, and are grouped in panicles. They appear in spring and early summer, and last for up to two months. They are followed by woody seed pods, about in diameter, which contain numerous flat, winged seeds. The blue jacaranda is cultivated for the sake of its large compound leaves, even in areas where it rarely blooms. The leaves are up to long and bi-pinnately compound, with leaflets little more than long. There is a white form available from nurseries. The unusually shaped, tough pods, which are across, are often gathered, cleaned and used to decorate Christmas trees and dried arrangements. Wood The wood is pale grey to whitish, straight-grained, relatively soft and knot-free. It dries without difficulty and is often used in its green or wet state for turnery and bowl carving. Habitat and range Jacaranda mimosifolia is native to northwestern Argentina (Salta, Jujuy, and Catamarca provinces) and southern Bolivia. It is found in the Dry Chaco and flooded savannas, and in the Southern Andean Yungas of the eastern Andean piedmont and inter-Andean valleys, up to 2600 meters elevation. In its native range the tree is threatened by uncontrolled logging and clearing of land for agriculture, and is assessed as Vulnerable in the IUCN Red List. Taxonomy The taxonomic status of the blue jacaranda is unsettled. ITIS regards the older name, J. acutifolia, as a synonym for J. mimosifolia. However, some modern taxonomists maintain the distinction between these two species, regarding them as geographically distinct: J. acutifolia is endemic to Peru, while J. mimosifolia