紫狸藻(學名:Utricularia purpurea),又稱東部紫狸藻[1],為狸藻屬中型浮水生食蟲植物。其種加詞「purpurea」來源於拉丁文「purpureus」,意為「紫色」,指其植株為紫色。紫狸藻為北美洲和中美洲的特有種。[2]紫狸藻被認為已喪失了部分食蟲性。珍妮弗·H·理查茲(Jennifer H. Richards)論述道,紫狸藻仍可以其捕蟲囊捕獲和消化脊椎動物,但較為少見。取而代之的是,其捕蟲囊內充滿了藻類、浮游動物及雜物,紫狸藻趨向以互利互惠的關係取代其捕食關係。[3]
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