About Thelesperma simplicifolium (A.Gray) A.Gray
Thelesperma simplicifolium is a perennial herbaceous flowering plant. It usually grows between 20 and 70 cm (7.9 to 27.6 inches) tall. Its stem leaves are scattered across the proximal three-quarters or more of the plant's full height, with leaf internodes measuring 45 to 95 mm in length. Most of its leaf lobes are linear to thread-like (filiform), measuring 5 to 60 mm long and 0.5 to 2 mm wide. Each flower head of this species typically contains eight ray florets, each with a yellow lamina 9 to 20 mm long. The species generally flowers from April to July, though some individual plants may continue flowering into October. This species is native to Texas and New Mexico in the United States, and to Chihuahua, Coahuila, Nuevo León, and Tamaulipas in Mexico. It also occurs as a non-established introduced waif in California, where it is planted along roadsides. It most commonly grows in open areas within oak or juniper woodlands or in desert scrub, usually growing on limestone, at elevations ranging from 100 to 1500 meters above sea level.