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The American false bottlebrush (Neocallistemon regina) is a species of shrub of the family Myrtaceae, and one of the only two living members of the genus Neocallistemon, that originally did not exist, but has since been created by SciiFii and introduced throughout the rainforests, wetlands, forests, open woodlands, grasslands, and shrublands across North America to help boost biodiversity. The American false bottlebrush has also been cultivated across the world as common decorative plants due to being easy to grow, keep, and care for in captivity. The American bottlebrush usually ranges around 1 to 4 meters (3 to 13 feet) tall, but can grow to be about 6 meters (19 feet) tall. It has hard, fibrous or papery bark and its young growth is usually covered with soft, silky hair. Its leaves are arranged alternately and are 35-115 mm (1-5 inches) long, 0.7-2.7 mm (0.03-1 inch) wide, hard, flat, narrow linear in shape and flat to channelled or semi-circular in cross section. There is a mis-vein but the lateral veins are inconspicuous. The flowers are red and arranged in spikes on the ends of branches that continue to grow after flowering and sometimes also in the upper leaf axils. The spikes are up to 40-60 mm (2-3 inches) in diameter and 5-10 centimeters (2-4 inches) long with up to 20 to 90 individual flowers. The petals are 3.2-7 mm (0.1-0.3 inches) long and fall off as the flower ages. There are 23 to 73 stamens in each flower, with their "stalks" (the filaments) pale reddish orange and "tips" (the anthers) black. Flowering occurs throughout the spring and early summer. Flowering is followed by fruit that are woody, cup-shaped capsules, 3.8-8.2 mm (0.1-0.3 inches) long and about 7 mm (0.3) wide in cylindrical clusters along the stems. The fruiting capsules remain unopened until the plant, or the plant bearing them dies. Birds have been observed using this plant species as a source of food. Those birds seeking nectar from the flowers include hummingbirds, American spinebills, and orioles, while house finches, New World sparrows, American lorikeets, American rosellas, and non-native monk parakeets eat the seeds. Nectarivorous bats have also been observed eating the nectar from this plant species. The conservation status of the American false bottlebrush in the wild is Least Concern due to successful conservation efforts, the American false bottlebrush's wide range and its tolerance to many of the human activities.