Purple milkweed or dark-flowered silk-weed, Asclepias purpurascens. Handcoloured lithograph by Endicott after a botanical illustration from John Torrey’s A Flora of the State of New York, Carroll and Cook, Albany, 1843. The plates drawn by John Torrey, Agnes Mitchell, Elizabeth Paoley and Swinton. John Torrey was an American botanist, chemist and physician 1796-1873.

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Size: 5126px × 6452px
Photo credit: © Florilegius / Alamy / Afripics
License: Licensed
Model Released: No

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