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Hymenoxys texana
Also called Texas Prairie Dawn Flower, Prairie Dawn, Texas Prairie Dawn, Texas Bitterweed
Hymenoxys texana is a rare species of flowering plant in the aster family known by the common names prairie dawn, Texas prairie dawn-flower, and Texas bitterweed. It is endemic to Texas, where it is found primarily in the general vicinity of Houston. It is threatened by the loss of its habitat. It is a federally listed endangered species of the United States.
Hymenoxys texana is an annual herb with delicate reddish or purplish stems growing only 10 or 15 centimeters (4-6 inches) tall. The leaves have rubbery, glandular blades which may be simple or divided into lobes, particularly at mid-stem. The inflorescence is a solitary flower head or an open cluster of several heads. Each head is under a centimeter wide and has 6 to 8 yellow ray florets each 2 or 3 millimeters long. The ray florets are often tucked behind the phyllaries. The center of the head has 30–75 tiny disc florets.
Pinaleno Mountain rubberweed · South American rubberweed · Colorado Rubberweed · Bigelow's rubberweed · East View rubberweed · Brandegee's four-nerve-daisy · Hymenoxys cabrerae · Cooper's rubberweed · Graylocks Four Nerve Daisy · Intermountain rubberweed · Owl's-claws · Hymenoxys insignis
Text excerpted from the Wikipedia article Hymenoxys texana by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
