Calycoseris
Encyclopedia
Calycoseris is a small genus of two species of annual
desert wildflowers in the daisy family
. They are native to western North America in the southwestern United States
and Northwestern Mexico. They are characterized by the tack-shaped gland hairs on their upper stems and bracts, the trait which gives them the common name tackstem. The two species of tackstem are the yellow tackstem, Calycoseris parryi
and the white tackstem, Calycoseris wrightii
.
Annual plant
An annual plant is a plant that usually germinates, flowers, and dies in a year or season. True annuals will only live longer than a year if they are prevented from setting seed...
desert wildflowers in the daisy family
Asteraceae
The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...
. They are native to western North America in the southwestern United States
Southwestern United States
The Southwestern United States is a region defined in different ways by different sources. Broad definitions include nearly a quarter of the United States, including Arizona, California, Colorado, Nevada, New Mexico, Oklahoma, Texas and Utah...
and Northwestern Mexico. They are characterized by the tack-shaped gland hairs on their upper stems and bracts, the trait which gives them the common name tackstem. The two species of tackstem are the yellow tackstem, Calycoseris parryi
Yellow tack-stem
The Yellow tack-stem is a spring wildflower found in the Mojave Desert of the southwestern United States. It grows to 12 inches in sandy soils below 6,000 feet. The plant has yellow flowers with leaves up to 4.5 inches long, and is part of the Sunflower Family....
and the white tackstem, Calycoseris wrightii
Calycoseris wrightii
Calycoseris wrightii, commonly known as white tackstem, is an annual spring wildflower, one of two species in the genus Calycoseris; the other species is C. parryi, the Yellow tack-stem...
.