Trans-Pecos Thinblehead

Hymenothrix wislizeni

Hymenothrix wislizeni photo © by Michael J. Plagens

On a flood zone adjacent to Pantano Wash, Tucson, Arizona. 28 Aug. 2016.

Sponsored Links:

FLOWERS: Heads consist entirely of yellow rays and yellow disc florets. Blooms mid to late summer depending on summer rainfall.

ANNUAL HERB: In some cases plants may take two seasons to mature. Mostly plants germinate with the start of summer rains and grow rapidly to flower by late summer or early fall.

LEAVES: The leaves are divided into about two dozen narrow segments arranged like a fan.

FRUIT: Seeds are topped with a crown of about 12 translucent pales.

RANGE: A fairly common plant in upland Sonoran Desert along the southeastern areas mostly in deep sandy soil.

UNARMED: Plant is without thorns.

Hymenothrix wislizeni photo © by Michael J. Plagens  Hymenothrix wislizeni photo © by Michael J. Plagens

Family: Asteraceae

More Information:

Sonoran Desert Field Guide
Sonoran Desert Places
Sonoran Desert Naturalist Home Page


Copyright Michael J. Plagens, page created 18 July 2016