A new species of Nepenthes L., N. attenboroughii (Nepenthaceae), from Palawan Island in the Philippines, is described and illustrated. It is restricted to rocky, ultramafic soils that comprise the summit region of Mount Victoria, Municipality of Narra, where it occurs in isolation from other members of the genus. On the basis of the morphological features, this new taxon appears to be related to both N. mira Jebb & Cheek of Palawan and N. rajah Hook.f. of Borneo. Its substantial size places it among the largest of known pitcher plants. The diagnostic morphological characters are discussed and an updated key is provided for a revised complex of Nepenthes species from the Palawan and North Borneo phytogeographical region. © 2009 The Linnean Society of London, Botanical Journal of the Linnean Society, 2009, 159, 195–202.

An expedition to the highest peak of the Kemul Massif located a number of different Nepenthes taxa, including the type populations of N. fusca Danser and N. mollis Danser (Nepenthaceae), neither of which have been observed in situ since they were first collected from Kemul in 1925. Studies of the type form of N. fusca show that N. fusca s.lat. includes two other species, one largely restricted to Sabah’s Crocker range, here reinstated as N. zakriana (J.H.Adam & Wilcock) J.H.Adam & Hafiza, and a more southerly distributed species from Brunei, Sarawak and Kalimantan, named here as N. dactylifera A.S.Rob, Golos & Barer. Analysis of the type population of N. mollis indicates that N. hurrelliana Cheek & A.L.Lamb is a heterotypic synonym of N. mollis, and reveals an additional undescribed Nepenthes species from Sarawak and Kalimantan with a widespread but highly localised range.

Drosera ultramafica, a new montane sundew species endemic to ultramafic soils of the Malesian highlands, is described and illustrated.

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