Tetraneuris ivesiana

2015.05.08 07.04.12 IMG 1872 - Flickr - andrey zharkikh

Tetraneuris ivesiana, commonly known as Ives' four-nerve daisy, is a species of flowering plant in the Asteraceae family, native to the southwestern United States. This perennial herb is characterized by its bright yellow flowers and its resilience in arid environments. The species is named after the American botanist Eli Ives, who made significant contributions to the study of North American flora.

Description

Tetraneuris ivesiana is a small, compact plant, typically growing to a height of 10-30 cm. It has narrow, linear leaves that are mostly basal, forming a rosette at the base of the stem. The leaves are green to gray-green in color, with a slightly leathery texture. The plant produces solitary flower heads on long, slender stems, each head consisting of 8-13 bright yellow ray florets. The florets are hermaphroditic, containing both male and female reproductive structures. The flowering period extends from early spring to late summer, depending on the elevation and latitude of its habitat.

Habitat and Distribution

Tetraneuris ivesiana is found in the southwestern United States, particularly in Arizona, New Mexico, Utah, and Colorado. It thrives in a variety of habitats, including grasslands, desert scrub, and rocky outcrops, typically at elevations ranging from 1,500 to 2,500 meters. The species is well adapted to dry, sunny conditions and is often found in areas with well-drained, sandy or gravelly soils.

Conservation

While Tetraneuris ivesiana is not currently listed as endangered or threatened, its populations are subject to the pressures of habitat loss and degradation, primarily due to urban expansion, agricultural development, and overgrazing. Conservation efforts are focused on habitat preservation and the monitoring of known populations to ensure their long-term viability.

Cultivation

Tetraneuris ivesiana is valued in horticulture for its drought tolerance and vibrant flowers. It is used in rock gardens, xeriscaping, and as a border plant. The species prefers full sun and well-drained soil. It is relatively low maintenance, requiring minimal water once established. Propagation is typically done by seed, though division of established plants can also be successful.