John Abbott / Yellow / Pale pitcher plant / trumpet (Sarracenia alata) growing in bog, Louisiana, USA, April

Nick Garbutt / Large aerial pitchers of natural hybrid Pitcher Plant (Nepenthes stenophylla x Nepenthes veitchi). Montane mossy heath forest or 'kerangas', southern plateau, Maliau Basin, Sabah's 'Lost World', Borne...

Ernie Janes / Northern pitcher plant (Sarracenia purpurea) with fly on rim

Jouan & Rius / Ground pitcher plant (Nepenthes ampullaria) flowering in Heath / Kerangas forest, Bako NP, Borneo, Sarawak, Malaysia

Jouan & Rius / Ground pitcher plant (Nepenthes ampullaria) flowering in Heath / Kerangas forest, Bako NP, Borneo, Sarawak, Malaysia

Edwin Giesbers / Fanged pitcher plant (Nepenthes bicalcarata) on white background, Sarawak, Borneo, Malaysia

Chien Lee / Shrub Frog (Philautus sp) inside Pitcher Plant (Nepenthes hurrelliana) in montane forest, Mount Murud, Sarawak, Malaysia

Chien Lee / Pitcher Plant (Heliamphora pulchella), Venezuela

Inaki Relanzon / Pitcher plant (Nephentes madagascariensis) Channel des Pangalanes, Madagascar

Mark Moffett / Carpenter Ant (Camponotus schmtzi) on tendril of host Pitcher Plant (Nepenthes bicalcarata), Borneo, Malaysia

Adrian Davies / Composite image of a Pitcher plant (Nepenthes) showing the development of pitcher, August.

Chris Mattison / Pitcher plant (Sarracenkia sp.), with bluebottle fly (Calliphoridae) on lip. UK, March.