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Issue: Vol. 754 No. 1: 1 May 2026
Type: Article
Published: 2026-05-01
DOI: 10.11646/phytotaxa.754.1.7
Page range: 115-119
Abstract views: 0
PDF downloaded: 0

Heptapleurum kemirianum (Araliaceae), a new subalpine endemic shrub from Gayo Plateau, Sumatra

Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra, Jl. Prof. Dr. Syarief Thayeb, Meurandeh, Langsa Lama, Langsa, Aceh 24416, Indonesia; Tumbuhan Asli Nusantara Foundation, BTN Korpri Blok C1 No 96, Kawatuna, Mantikulore, Palu, Sulawesi Tengah 94233, Indonesia
Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra, Jl. Prof. Dr. Syarief Thayeb, Meurandeh, Langsa Lama, Langsa, Aceh 24416, Indonesia
Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra, Jl. Prof. Dr. Syarief Thayeb, Meurandeh, Langsa Lama, Langsa, Aceh 24416, Indonesia
Research Center for Biosystematics and Evolution, National Research and Innovation Agency (BRIN) KST Soekarno – BRIN, Jl. Raya Jakarta - Bogor KM 46, Cibinong, Bogor 16911, Indonesia
Malesia shrub taxonomy Heptapleurum rugosum Schefflera rugosa Eudicots

Abstract

Heptapleurum kemirianum Frodin ex Mustaqim & Hutabarat is described. The species is known from five specimens collected from the subalpine vegetation of the Gayo Plateau, northern Sumatra. This species is most closely related to Heptapleurum rugosum (Blume) Boerl. and Heptapleurum wrayi King because the flowers are arranged racemosely on the ultimate branches of the inflorescences. The new species differs from H. rugosum in having smaller, thickly coriaceous leaflets with a shining upper surface, and much shorter inflorescences, while differs from H. wrayi in having fewer leaflets, thicker leaflets with a shiny upper surface and strongly revolute margin, as well as much shorter inflorescences. Detailed morphological descriptions, photographs, and discussions are provided.

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How to Cite

Mustaqim, W.A., Arico, Z., Misdi & Hutabarat, P.W. (2026) Heptapleurum kemirianum (Araliaceae), a new subalpine endemic shrub from Gayo Plateau, Sumatra. Phytotaxa 754 (1): 115–119. https://doi.org/10.11646/phytotaxa.754.1.7