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Helianthus ciliaris is a species of sunflower known by the common names Texas blueweed and yerba parda.. Helianthus ciliaris grows in much of the south-central and southwestern United States (from Texas north to Kansas and west to California) [1] and northern Mexico (from Tamaulipas west to Sonora and south to Durango and San Luis Potosí), [2] but it can be found elsewhere in North America ...
Lindheimera texana, commonly known as Texas yellow star, is a species of flowering plant in the tribe Heliantheae within the family Asteraceae. It is found in the south-western United States (Oklahoma and Texas) and northern Mexico (Coahuila). [1] Other common names include star daisy, Texas star and Lindheimer daisy, [2]
Turnera ulmifolia grows erect, with dark toothed leaves and small, yellow-orange flowers, and is often found as a weed growing on roadsides. These yellow flowers bloom around 6:00 a.m. and wilt around 11:30 a.m. Life span for flower is around six hours. These plants can survive on minimum water and grow on walls, cement blocks, and rocks.
Asclepias tuberosa, commonly known as butterfly weed, is a species of milkweed native to eastern and southwestern North America. [2] It is commonly known as butterfly weed because of the butterflies that are attracted to the plant by its color and its copious production of nectar .
The mature seed capsules open explosively when disturbed (a very similar trait to that of the mature seed capsules or fruits of plants found in the genus Impatiens) and can disperse seeds up to 4 meters (about 13 feet) away. The flowers of the plant are hermaphroditic, blooming from July to October.
[5] [6] It bears heads of yellow flowers, with around 10–20 disc florets and 3–8 ray florets, the laminae of the latter around 2–5 mm (0.079–0.197 in) long. It flowers year round. [ 5 ] It is a weedy species, found in lawns and along other disturbed areas such as roadsides and paths.
Verbesina occidentalis has yellow disk flowers. The number of ray flowers will range anywhere from two to five petals. The most common petal number is two. [3] The flowers are sparse and are not evenly arranged around the head of the flower. This makes the plant looks like it is uneven or off balance. A distinctive feature of the plant is its ...
Individual plants reach 1–1.5 m (3.3–4.9 ft) tall, have once or twice pinnatified leaves (see image of leaf), and abundant spines on the stems and leaves. It produces yellow flowers with pentagonal corollas 2–3.5 cm (0.79–1.38 in) in diameter and weakly bilaterally symmetric (see flower-closeup image). [ 6 ]
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