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Issue: Vol. 698 No. 1: 22 Apr. 2025
Type: Article
Published: 2025-04-22
DOI: 10.11646/phytotaxa.698.1.2
Page range: 15-27
Abstract views: 665
PDF downloaded: 28

A new species of Vrydagzynea (Orchidaceae: Goodyerinae) from southeastern Thailand with field observations on its pollination biology

Plants of Thailand Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
Plants of Thailand Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
Monocots Cranichideae endemism floral reward Halictidae Orchidoideae plant taxonomy reproductive success

Abstract

Vrydagzynea suddeei, a new species discovered at Trok Nong Nature Trail in Namtok Phlio National Park, Chanthaburi Province, Thailand, is described. Vrydagzynea suddeei is distinct from V. deliana in having larger, greyish-green leaves with a central silver stripe, and a labellum with entire apical margins, a minutely bilobed apex, and papillae on the upper surface. A detailed morphological description, illustrations, distribution, habitat, phenology, and a comparison with similar species are provided, along with a key to all known Vrydagzynea species in Thailand. Vrydagzynea suddeei employs females of sweat bee Lipotriches (Maynenomia) sp. as its pollinators, offers nectar as a reward, and is not capable of autonomous self-pollination or agamospermy.

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How to Cite

Chuchuea, C. & Seelanan, T. (2025) A new species of Vrydagzynea (Orchidaceae: Goodyerinae) from southeastern Thailand with field observations on its pollination biology. Phytotaxa 698 (1): 15–27. https://doi.org/10.11646/phytotaxa.698.1.2