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Issue: Vol. 700 No. 3: 9 May 2025
Type: Article
Published: 2025-05-09
DOI: 10.11646/phytotaxa.700.3.1
Page range: 251-256
Abstract views: 437
PDF downloaded: 826

Contributions to the orchid flora of Kalimantan II: A new Bulbophyllum sect. Macrocaulia from Mount Bukit Raya, Indonesia

Yayasan Tumbuhan Asli Nusantara, BTN Korpri Blok C1 No. 96, Kawatuna, Mantikulore, Palu, Sulawesi Tengah 94233, Indonesia; Yayasan Konservasi Biota Lahan Basah, Jalan Raya Sawo 17–19, Surabaya, Jawa Timur, Indonesia
Yayasan Tumbuhan Asli Nusantara, BTN Korpri Blok C1 No. 96, Kawatuna, Mantikulore, Palu, Sulawesi Tengah 94233, Indonesia; Nusantara Climate Initiatives, 18 Office Park, Lv. 22. Jl. TB Simatupang, Pasar Minggu, Jakarta Selatan, Indonesia 12520
Taman Nasional Bukit Baka Bukit Raya, Jl. Dr. Wahidin Sudirohusodo Baning, Kota Sintang Sub-District, Sintang Regency, Kapuas Raya, Baning Kota, Sintang, West Kalimantan 78613, Indonesia
Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra, Jl. Prof. Dr. Syarief Thayeb, Meurandeh, Langsa Lama, Langsa, Aceh 24416, Indonesia
Bulbophyllum endemic epiphyte taxonomy West Malesia Monocots

Abstract

A new species of Bulbophyllum section Macrocaulia named Bulbophyllum bukitrayaense Yudistira & Mustaqim is described from the mid-montane forest zone of Mount Bukit Raya, Kalimantan Barat Province. It is similar to Bulbophyllum scabrum but differs in having the lower surface of the labellum with two times approaching margin undulation. The new species also have coarsely rugose upper ¼ surface of the labellum (vs smooth) and ovary covered by papillose-muriculate indumentum (vs glabrous). A full description, notes, and fresh photograph plates are given.

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How to Cite

Yudistira, Y.R., Randi, A., Joharudin, D. & Mustaqim, W.A. (2025) Contributions to the orchid flora of Kalimantan II: A new Bulbophyllum sect. Macrocaulia from Mount Bukit Raya, Indonesia. Phytotaxa 700 (3): 251–256. https://doi.org/10.11646/phytotaxa.700.3.1