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AGAVE AND YUCCA | CACTI | WILDFLOWERS

Zinnia Acerosa, Desert Zinnia


Plants > Wildflowers > Asteraceae > Zinnia Acerosa
Desert Zinnia; Zinnia acerosa, Ironwood Forest National Monument, Arizona
Zinnia acerosa, Ironwood Forest National Monument, Arizona
Common names:
Desert zinnia, white zinnia
Family:
Aster (Asteraceae)
Scientific name:
Zinnia acerosa
Main flower color:
White
Range:
South Arizona, south New Mexico and south Texas
Height:
Between 4 and 12 inches
Habitat:
Rocky, open locations; 2,200 to 6,000 feet
Leaves:
Linear, opposite, around half an inch long
Season:
April to October
Pintrest
Zinnia acerosa is not always easily recognizable as an asteraceae species, especially when its flowers are partly withered, but they have the familiar composite structure, with 4 to 7 white (occasionally pale yellow) ray florets around a center of 8 to 13 yellow disc florets, brown when mature, and elongated, projecting above the rays. The ray florets have three notches at the tip, and are about a quarter of an inch long. Phyllaries are wide - oblong to nearly rounded, blunt at the tip.

Plants form rounded, shrub-like clumps, and inhabit generally dry, semi-desert areas, from south central Arizona to west Texas. Stems are greyish green in color, and they branch readily. Leaves and stems have a covering of short, rough hairs.




Two white flowers
Two white flowers
Desert Zinnia
Many flowers
Yellow and white florets
Yellow and white florets
Recurved ray florets
Recurved ray florets
Upper stem leaves
Upper stem leaves
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