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Machaeranthera pinnatifida var. chihuahuana

Machaeranthera pinnatifida (Hook.) Shinners var. chihuahuana B.L. Turner & R.L. Hartm.

Chihuahua Tansyaster, Cutleaf Ironplant

Asteraceae (Aster Family)

Synonym(s): Haplopappus spinulosus var. chihuahuanus

USDA Symbol: MAPIC

USDA Native Status: L48 (N)

This taxon appears as Machaeranthera pinnatifida ssp. pinnatifida var. chihuahuana on the USDA PLANTS Database website.

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Plant Characteristics

Duration: Perennial
Habit: Herb , Subshrub
Breeding System: Flowers Bisexual
Inflorescence: Head
Size Notes: Up to about 20 inches tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: Yellow
Bloom Time: May , Jun , Jul , Aug , Sep
Bloom Notes: Flowers showy. Ray and disc flowers yellow.

Distribution

USA: AZ , NM , TX
Native Distribution: Texas, New Mexico, Arizona and the Mexican states of Chihuahua, Coahuila, Durango and Sonora. (Webref 3).
Native Habitat: Clayey to rocky washes, prairies, plains, roadsides; 1000�1800 m. (Webref 3).

Bibliography

Bibref 293 - Manual of the Vascular Plants of Texas (1979) Correll, D. S. & M. C. Johnston

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Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Machaeranthera pinnatifida var. chihuahuana in USDA Plants
FNA: Find Machaeranthera pinnatifida var. chihuahuana in the Flora of North America (if available)
Google: Search Google for Machaeranthera pinnatifida var. chihuahuana

Metadata

Record Modified: 2023-07-24
Research By: Joseph A. Marcus

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