<I>Nepenthes</I> (<I>Nepenthaceae</I>) of Halmahera, Indonesia

Abstract

Two new paniculate species of Nepenthes, N. halmahera and N. weda, both allied to N. danseri Jebb & Cheek, are described respectively from lowland and lower montane forest on ultramafic substrate. Nepenthes weda appears to be unique in the genus due to the adaxial tepal surfaces which in the distal portion are hairy and lack nectar glands. This species is also unique among paniculate members of the genus in its forward-facing, concave subapical lid appendage. Both species are currently only known from the Weda Bay Nickel Project concession area in Halmahera, Indonesia, and are assessed as Critically Endangered using the 2012 IUCN standard. Two character states are formally described and named for the first time in Nepenthes: nanophyll rosettes and multiseriate fringed pitcher wings. Stage-related heteromorphy in lid appendages is documented for the first time in the genus. Keys to the species of Nepenthes of Halmahera, and to the paniculate species of SE Asia are presented.

A phylogenomic analysis ofNepenthes(Nepenthaceae)

“…Cheek & Jebb (2015;20152018) Not discussed As per Danser plus N. mirabilis, N. gracilis and N. papuana Nobiles Danser N. spectabilis, N. hirsuta, N. deaniana, N. leptochila, N. neglecta. Philippines, Borneo, Sumatra N. macrovulgaris, N. hirsuta, N. hispida (Borneo), N. philippinensis (Palawan).…”

A new section in <I>Nepenthes</I> (<I>Nepenthaceae</I>) and a new species from Sulawesi

“…This paper forms part of studies towards a World Monograph of Nepenthes L. building on a Skeletal Revision of Nepenthes (Jebb & Cheek 1997) and the Flora Malesiana account (Cheek & Jebb 2001 In addition to the type species the section comprises N. glabrata J.R. Turnbull & A.T.Middleton, N. hamata, N. muluensis M.Hotta, N. murudensis Culham ex Jebb & Cheek, N. nigra, N. pitopangii Some of the characters that delimit this section appear to be neotenous. The presence of multicellular projections from the upper surface of the lid, and the fasciculate spur are widespread, perhaps ubiquitous, in the seedlings of species of Nepenthes, but rarely expressed in the lower pitchers of any species except those of section Tentaculatae, possibly the only exception being N. weda Cheek (Cheek 2015). In some species of section Tentaculatae, such as N. tentaculata and N. hamata, these neotenous features are also expressed in the upper pitchers, together with fringed wings which are normal in lower pitchers (and also seedlings) but in most other species of the genus usually absent or reduced to inconspicuous ridges in the upper pitchers.…”

Nepenthes section Insignes in Indonesia, with two new species

“…In 2013, 12 new species were published from the Philippines alone (Cheek & Jebb 2013 a -g). In the last few years our attention has focussed on Indonesia, with new species described from Halmahera (Cheek 2015) and Sulawesi (Cheek & Jebb 2016a-b). Here we describe a new species from New Guinea, the first published from that island since 2011 (Robinson et al 2011: 543).…”