The inset cover photo shows the tropical pitcher plant Nepenthes lowii. Endemic to the cloud forests of northern Borneo, this pitcher plant produces epiascidiate leaves evolved for heterotrophic nitrogen gain through the collection of mammalian faeces. The pitcher lid produces a food reward for montane tree shrews (Tupaia montana), which position themselves directly over the pitcher orifice whilst feeding, such that their excreta are neatly captured, providing the plant with 57–100 % of its nitrogen needs. [See Cross et al., 927–938.]