Family: Polemoniaceae
[Polemonium caeruleum var. album hort., more... ]
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A related European sp. with descending rootstock or root, and at least frequently with clustered stems, occasionally escapes from cult.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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