Tulipa L. | Plants of the World Online | Kew Science
Species tulips go wild with color
Tiptoe through the tulips – cultural history, molecular phylogenetics and classification of Tulipa (Liliaceae) - Christenhusz - 2013 - Botanical Journal of the Linnean Society - Wiley Online Library
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Daffodils Are Delightful, But Tulips Are Better – gardeninacity
Tulipa L. | Plants of the World Online | Kew Science
Shop Species Tulip, clusiana var. chrysantha and other Seeds at Harvesting History
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