Yucca brevifolia is a plant species belonging to the genus Yucca. It is tree-like in habit, which is reflected in its common names: Joshua tree, yucca palm, tree yucca, and palm tree yucca. This monocotyledonous tree is native to southwestern North America in the states of California, Arizona, Utah and Nevada, where it is confined mostly to the Mojave Desert between 400 and 1,800 meters (1,300 and 5,900 ft) elevation. It thrives in the open grasslands of Queen Valley and Lost Horse Valley in Joshua Tree National Park. A dense Joshua tree forest also exists in Mojave National Preserv...

A heath or heathland is a shrubland habitat found mainly on low quality acidic soils, and is characterised by open, low growing woody vegetation. There are some clear differences between heath and moorland. For example moorland has a very peaty topsoil, and it is also free-draining, whereas a heath is not. Moorland is generally related to high-ground heaths with — especially in Great Britain — a cooler and damper climate. Heaths are widespread worldwide. They form extensive and highly diverse communities across Australia in humid and sub-humid areas. Fire regimes with recur...

Erica (), the heaths or heathers, is a genus of approximately 860 species of flowering plants in the family Ericaceae. The English common names "heath" and "heather" are shared by some closely related genera of similar appearance. Most of the species are small shrubs from 0.2-1.5 m high, though some are taller; the tallest are E. arborea (Tree Heath) and E. scoparia (Besom Heath), both of which can reach up to 6–7 m tall. All are evergreen, with minute needle-like leaves 2–15 mm long. Flowers are sometimes axillary, and sometimes in terminal umbels or spikes, and are usually outwar...