Eriophyllum wallacei

Eriophyllum wallacei is a North American flowering plant in the family Asteraceae known by the common names woolly daisy and woolly easterbonnets. It grows in the southwestern United States (Arizona, Utah, Nevada, and California, with an isolated population in Wyoming) and northwestern Mexico (northern Baja California).[2][3][4] It may grow in clumps or on short erect stems in sand, rocks, and gravel.[5]

Eriophyllum wallacei
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Eriophyllum
Species:
E. wallacei
Binomial name
Eriophyllum wallacei
Synonyms[1]
  • Bahia wallacei A. Gray 1857
  • Actinolepis wallacei (A. Gray) A. Gray
  • Antheropeas wallacei (A. Gray) Rydb.
  • Antheropeas australe Rydb.
  • Bahia rubella A.Gray
  • Eriophyllum aureum Brandegee

It is a small, squat annual herb rarely more than 15 centimetres (6 inches) tall. The plant is covered in masses of white cotton-candy-like wool and has small oval leaves up to 2 cm (1 in) long. Between March and June it produces one flower head per stem, about 6 millimetres (1⁄4 in) wide and each with 5–10 yellow or cream-colored ray florets. The rays are about 3 mm (1⁄8 in) long[6] and sometimes have red veins, surrounding 20–30 yellow disc florets.[5] The seed is black and narrow.[6]

In drier conditions, the plant tends to grow a single stem to ensure its reproduction via seed. With more moisture, it branches from the base into multiple stalks.[6]

References
  1. The Plant List, Eriophyllum wallacei (A.Gray) A. Gray
  2. Biota of North America program 2014 county distribution map
  3. Calflora taxon report, University of California, Eriophyllum wallacei (A. Gray) A. Gray, Wallace eriophyllum, Wallace's woolly daisy
  4. SEINet, Southwestern Biodiversity, Arizona Chapter, Eriophyllum wallacei (A. Gray) A. Gray includes photos, description, interactive distribution map
  5. Eriophyllum wallacei (A. Gray) A. Gray, 1883. Woolly easterbonnets, Wallace's woolly daisy Flora of North America.
  6. Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. p. 374. ISBN 978-0-375-40233-3.
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