Arizona Naturalists >>> Sonoran Desert Naturalist >>> Field Guide >>> Sonoran Desert Flora >>> Loasaceae >>> Mentzelia jonesii

Jones' Blazing Star

Mentzelia jonesii

Blazing Star, Mentzelia jonesii, photo © by Michael Plagens

This Jones' Blazing Star was found in bloom on the slopes of Stewart Mountain just north of the Salt River in eastern Maricopa County, Arizona, USA on 27 March 2010.

ANNUAL: Spring annual appearing in years after good winter rains. Generally low growing and considerably less than ¾ meter tall.

FLOWERS: Bright yellow flowers with five petals, many stames; petals 12 mm long; a small patch of orange may be visible at base of each petal. Blooming mid to late spring depending on available moisture.

LEAVES: Green leaves are variously lobed; generally the lower leaves are larger and with longer lobes.

RANGE: Upper elevations of the Sonoran Desert, often in transition to chaparral or desert grassland habitats. Ranges into California and Nevada.

FRUIT: The seed pods, roughly 25 mm in length, develop below the flower and are often curved and wider towards the tip. Numerous small seeds.

UNARMED: No spines or thorns.

Sponsored Links:

Loasaceae -- Loasa Family

More Information:


Copyright Michael J. Plagens, 1999-2010