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Machaeranthera pinnatifida – Lacy tansyaster

 

Names

Scientific Name: Machaeranthera pinnatifida

Synonym: Xanthisma spinulosum, Happlopapus spinulosus

Common Names: Lacy tansyaster, cutleaf ironplant, spiny goldenweed

Characteristics

Duration: Perennial

Growth Habit: Subshrub

Arizona Native Status: Native

Habitat: Arid grasslands and deserts

Flower Color: Yellow

Flowering Season: March to October

Height: 4 inches to 3 feet

Description: Lacy tansyaster is highly variable in size and form depending upon its environment. It is most typically a slender plant with small, mildy bristled leaves. One yellow flowerhead appears on each tip of the plants many upper branches.

Special Characteristics

N/A

Classification

Order: Asterales
Family: Asteraceae

SOURCES:

University of Austin, Lady Bird Johnson wildflower center: wildflower.org/plants/result.php?id_plant=MAPI

Southwest Colorado Wildflowers Website: swcoloradowildflowers.com/Yellow%20Enlarged%20Photo%20Pages/machaeranthera%20pinnatifida.htmSDA NRCS plant fact sheet. Retrieved from: plants.usda.gov/factsheet/pdf/fs_hibe.pdf

 

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