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Issue: Vol. 658 No. 1: 2 Jul. 2024
Type: Article
Published: 2024-07-02
DOI: 10.11646/phytotaxa.658.1.4
Page range: 99-108
Abstract views: 292
PDF downloaded: 1

Saurauia decolorata (Actinidiaceae), a new species from Mindanao, the Philippines

Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, North Carolina 28403, USA. Philippines Biodiversity Conservation Foundation Inc., Bacolod City, Negros Occidental 6100, Philippines.
Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, North Carolina 28403, USA
Natural Science Department, College of Arts and Sciences, University of Southeastern Philippines, Davao City, Philippines.
Center for Biodiversity Research and Extension in Mindanao (CEBREM), Central Mindanao University, Musuan, Bukidnon 8710, Philippines. Plant Biology Division, Institute of Biological Sciences, College of Arts and Sciences, Central Mindanao University, Musuan, Bukidnon 8710, Philippines.
Center for Biodiversity Research and Extension in Mindanao (CEBREM), Central Mindanao University, Musuan, Bukidnon 8710, Philippines. Plant Biology Division, Institute of Biological Sciences, College of Arts and Sciences, Central Mindanao University, Musuan, Bukidnon 8710, Philippines.
Botanical Research Institute of Texas, 1700 University Drive, Fort Worth, Texas 76107-3400, USA
Actinidiaceae Saurauia Mindanao biodiversity tropical kiwi Eudicots

Abstract

Saurauia decolorata from the Mt. Pantaron Range, Bukidnon and Mt. Balatukan Natural Park, Misamis Oriental, Mindanao Island, the Philippines, is illustrated and described as a new species. It closely resembles S. avellana and S. elegans in having branchlets, petioles, and abaxial surfaces of the leaves covered with tomentum and scales, densely clustered flowers, longitudinal anther dehiscence, and 3–4 styles. However, S. decolorata is distinguished from these species by its prominent rusty-colored tomentum and scales on branchlets and abaxial leaf surfaces, cordate leaf bases, crenate margin, 16–21 pairs of lateral veins, fascicled-cymose inflorescences that are both axillary and ramiflorous, and sparsely scaly pinkish green outer sepals. This discovery further emphasizes the unique biodiversity of the forests of the Pantaron Range and Mt. Balatukan which urgently need legislative protection and enhanced protected area management plans, respectively.

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