chromosa

Chromosa is a genus of flowering plants in the family Asteraceae, native to South Africa. The genus is characterized by its unique inflorescences, which are composed of a central disc surrounded by ray florets. The disc florets are typically yellow or orange, while the ray florets are white or pink. Chromosa species are perennial herbs, growing to a height of about 30-60 cm. They are often found in grasslands and rocky outcrops, where they thrive in well-drained soil.

The genus was first described by botanist Carl Peter Thunberg in 1794. It includes about 15 species, with the most well-known being Chromosa helianthoides. This species is often cultivated for its attractive flowers and is used in landscaping and as a cut flower. Chromosa plants are also valued for their nectar, which is a valuable food source for bees and other pollinators.

Chromosa species are relatively easy to grow and can be propagated from seed or division. They prefer full sun and well-drained soil, and are drought-tolerant once established. They are also relatively pest and disease-resistant, making them a popular choice for gardeners.

In conservation, Chromosa species are considered to be of least concern, as they are widespread and have a stable population. However, like all plants, they are threatened by habitat loss and degradation. Efforts are being made to protect and preserve their natural habitats, ensuring the continued survival of this unique genus of flowering plants.