1. Lepidopteran whose larva cuts our neat discs from lily pads nominally recalls populous Asian country and former German currency (5,4,4)
2. It did? Not bad, considering its lack of teeth.But it left a plant with floating stems and leaves and creamy white flowers (4-3)
3. Much-abhored filamentous alga of enriched water margins and much less cosy than it sounds(7,4)