Machaeranthera asteroides

Machaeranthera asteroides, the fall tansyaster,[2] is a North American species of plants in the sunflower family. It is native to the southwestern United States (California, Arizona, Nevada, New Mexico, Colorado, Utah) and northern Mexico (Chihuahua, Sonora, Baja California).[3]

Machaeranthera asteroides
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Machaeranthera
Species:
M. asteroides
Binomial name
Machaeranthera asteroides
Synonyms[1]
Synonymy
  • Aster amplifolius (Wooton & Standl.) Kittell
  • Dieteria asteroides Torr.
  • Machaeranthera amplifolia Wooton & Standl.
  • Machaeranthera pruinosa A.Gray
  • Machaeranthera simplex Wooton & Standl.
  • Machaeranthera verna A.Nelson
  • Machaeranthera lagunensis D.D.Keck, syn of var. lagunensis

Machaeranthera asteroides is a biennial or perennial herb with a woody taproot. It often grows in a clump of several stems. Ray florets in the flower heads are white or purple, and female. Disc florets are yellow and bisexual.[4][5]

Varieties[1][4]

References
  1. The Plant List, Machaeranthera asteroides (Torr.) Greene
  2. USDA, NRCS (n.d.). "Machaeranthera asteroides". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 21 June 2015.
  3. Biota of North America Program 2014 county distribution map
  4. Flora of North America, Dieteria asteroides Torrey in W. H. Emory, Not. Milit. Reconn. 141. 1848.
  5. Wooton, Elmer Ottis & Standley, Paul Carpenter 1913. Contributions from the United States National Herbarium 16(4): 189 as Machaeranthera simplex


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