Erigeron subtrinervis

Erigeron subtrinervis
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Astereae
Genus: Erigeron
Species: E. subtrinervis
Binomial name
Erigeron subtrinervis
Rydb. ex Porter & Britton
Synonyms[1]
  • Erigeron glabellus var. mollis A.Gray
  • Erigeron glabellum var. molle A.Gray[2]
  • Erigeron bakeri Wooton & Standl.
  • Erigeron incanescens Rydb.
  • Erigeron speciosus var. mollis (A.Gray) S.L.Welsh

Erigeron subtrinervis, called the Three-Nerved Daisy,[3] the Three-nerve fleabane,[4] or the hairy showy daisy,[4] is a North American species of flowering plants in the daisy family. It grows in various mountains of western Canada and the western United States: Rocky Mountains, northern Cascades, Black Hills, etc., from British Columbia and Washington State east to North Dakota and south as far as New Mexico.[5][3]

Erigeron subtrinervis grows in openings and along roadsides in aspen groves and conifer forests, as well as on ridges and mountain peaks at high elevations. It is a perennial herb up to 90 cm (3 feet) tall, producing underground rhizomes and a woody caudex. The inflorescence generally contains 1-21 flower heads per stem, in a flat-topped array. Each head contains 100–150 purple or lavender ray florets surrounding many yellow disc florets.[6]

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