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Middle cauline leaves of Asclepias speciosa (a) and Asclepias syriaca (b). |
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| Part of: Gudžinskas Z, Petrulaitis L, Žalneravičius E (2019) Asclepias speciosa (Apocynaceae, Asclepiadoideae): a rare or unrecognized alien species in Europe? PhytoKeys 121: 29-41. https://doi.org/10.3897/phytokeys.121.33573 |