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Echinacea purpurea, the eastern purple coneflower, [4] purple coneflower, hedgehog coneflower, or Echinacea, is a North American species of flowering plant in the family Asteraceae. [5] It is native to parts of eastern North America and present to some extent in the wild in much of the eastern , southeastern and midwestern United States , as ...
The genus Echinacea was then formally described by Linnaeus in 1753, and this specimen as one of five species of Rudbeckia, Rudbeckia purpurea. [6] [7] Conrad Moench subsequently reclassified it in 1794 as the separate but related genus, Echinacea, with the single species Echinacea purpurea, [8] [9] so that the botanical authority is given as ...
Echinacea pallida, the pale purple coneflower, [3] is a species of herbaceous perennial plant in the family Asteraceae. It is sometimes grown in gardens and used for medicinal purposes. It is sometimes grown in gardens and used for medicinal purposes.
Echinacea tennesseensis is a rare species, found in fewer than 10 locations in Davidson, Wilson, and Rutherford Counties.. Flowering plants in cultivation. It has been hypothesized that an ancestral Echinacea species spread into middle Tennessee during the hypsithermal period following the last ice age, when conditions were drier and prairies extended into much of the central eastern U.S. that ...
Echinacea purpurea, with purple flowers; Rudbeckia fulgida, with yellow or orange flowers This page was last edited on 25 December 2015, at 04:27 (UTC). Text is ...
It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something called the Rayleigh effect, or Rayleigh scattering. But that same ...