[Botany • 2023] Nepenthes calcicola (Nepenthaceae) • A New Pitcher Plant from Gulf Province, Papua New Guinea

Nepenthes calcicola Gary W.Wilson, S.Venter & Damas,

in Wilson, Venter & Damas, 2023. 

DOI: 10.55981/reinwardtia.2023.4536  

 Researchgate.net/publication/376959748

 Photos by S. Venter.

 

Abstract

A new species of pitcher plant from rain forest on limestone karst in the Purari River catchment in the Gulf Province of Papua New Guinea is described and illustrated as Nepenthes calcicola Gary W.Wilson, S.Venter & Damas. It is distinguished from N. neoguineensis on the basis of its distribution, ecology, habitat, and pitcher and inflorescence morphology. The new species is illustrated, and description is here given. The species is assessed as Vulnerable (VU) according to IUCN criteria.

Keywords: Nepenthaceae; pitcher; Papua New Guinea; taxonomy; karst

 

Nepenthes calcicola Gary W.Wilson, S.Venter & Damas.
A. Habit with lower pitcher. B. Habit with mid-level pitchers. C. Habit with male inflorescence. D. A rosette of pitchers E. Field Assistant Siwi with mid-level rosette.

 (from the type, Collection S. Venter 14170 lodged at CNS).

 Photos by S. Venter.

Nepenthes calcicola Gary W.Wilson, S.Venter & Damas, spec. nov.

Nepenthes calcicola differs from N. neoguineensis in having stems that grow beneath the layer of leaf litter (vs. stems above leaf litter); short stems and rosettes of pitchers present (vs. absent); spur terete and recurved (vs. dorsiventrally flattened and not recurved; female inflorescence peduncle 160–190 × 3.0–4.0 mm (vs. 120–150 × 2.0 –2.5 mm); tepals obovate to broadly-obovate (vs. orbicular-elliptic).

Etymology. The specific epithet describes the calcareous substrate the plants grow in

 Gary W. Wilson, Stephanius Venter, Kapiro Q. Damas. 2023.  Nepenthes calcicola (Nepenthaceae), A New Pitcher Plant from Gulf Province, Papua New Guinea. REINWARDTIA.  22(2); 103‒109. DOI: 10.55981/reinwardtia.2023.4536 

  Researchgate.net/publication/376959748_NEPENTHES_CALCICOLA_A_NEW_PITCHER_PLANT_FROM_GULF_PROVINCE_PAPUA_NEW_GUINEA

— Sebuah jenis baru kantong semar dari hutan hujan di batugamping di DAS Sungai Purari di Provinsi Teluk Papua Nugini dipertelakan dan diilustrasikan sebagai Nepenthes calcicola Gary W.Wilson, S.Venter & Damas. Jenis ini dibedakan dari N. neoguineensis berdasarkan distribusi, ekologi, habitat, dan morfologi kantong dan perbungaannya. Pertelaan dan ilustrasi dari jenis baru ini disajikan dalam naskah ini. Status konservasi jenis ini berdasarkan kriteria IUCN adalah jenis rentan (VU). 

Kata kunci: Batugamping, kantong, Nepenthaceae, Papua Nugini, taksonomi.