Hymenoxys cooperi
Encyclopedia
Hymenoxys cooperi is a species of flowering plant in the daisy family
known by the common name Cooper's rubberweed. It is native to the southwestern United States and Great Basin
, where it grows in rocky soils in arid regions. This is a biennial or perennial herb with a branching stem growing erect to heights between 15 and 90 centimeters. It produces narrow, pointed leaves with two lateral lobes that form a trident shape. The foliage and stem are glandular and waxy, usually with a thin coat of light colored hairs. The daisylike flower head
is a cup of fused phyllaries
with yellow-orange disc florets and bright yellow ray florets, each about a centimeter long.
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...
known by the common name Cooper's rubberweed. It is native to the southwestern United States and Great Basin
Great Basin
The Great Basin is the largest area of contiguous endorheic watersheds in North America and is noted for its arid conditions and Basin and Range topography that varies from the North American low point at Badwater Basin to the highest point of the contiguous United States, less than away at the...
, where it grows in rocky soils in arid regions. This is a biennial or perennial herb with a branching stem growing erect to heights between 15 and 90 centimeters. It produces narrow, pointed leaves with two lateral lobes that form a trident shape. The foliage and stem are glandular and waxy, usually with a thin coat of light colored hairs. The daisylike flower head
Head (botany)
The capitulum is considered the most derived form of inflorescence. Flower heads found outside Asteraceae show lesser degrees of specialization....
is a cup of fused phyllaries
Bract
In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis, or cone scale. Bracts are often different from foliage leaves. They may be smaller, larger, or of a different color, shape, or texture...
with yellow-orange disc florets and bright yellow ray florets, each about a centimeter long.