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Issue: Vol. 781 No. 2: 21 Oct. 2026
Type: Article
Published: 2026-10-21
DOI: 10.11646/phytotaxa.781.2.6
Page range: 165-176
Abstract views: 18
PDF downloaded: 1

A remarkable new species of Ponthieva (Orchidaceae: Spiranthinae) from Yanachaga Chemillén National Park, Peru

Missouri Botanical Garden. Prolong. Bolognesi Mz. E Lote 6; Oxapampa-Pasco; Peru; Selva Central Herbarium (HOXA). Prolong. Bolognesi Mz. E Lote 6; Oxapampa-Pasco; Peru
Missouri Botanical Garden. Prolong. Bolognesi Mz. E Lote 6; Oxapampa-Pasco; Peru; Selva Central Herbarium (HOXA). Prolong. Bolognesi Mz. E Lote 6; Oxapampa-Pasco; Peru
Missouri Botanical Garden. Prolong. Bolognesi Mz. E Lote 6; Oxapampa-Pasco; Peru; Selva Central Herbarium (HOXA). Prolong. Bolognesi Mz. E Lote 6; Oxapampa-Pasco; Peru
Monocots Conservation status assessment Cranichideae micro-endemism Ponthieva rostrata group taxonomy tropical Andes

Abstract

Ponthieva ravenii is described as a new orchid species from Yanachaga Chemillén National Park in central Peru. The species is characterized by its terrestrial habit, cochleate and 3-veined lateral sepals with rounded-obtuse apices and a callose protuberance toward the apex on the abaxial surface, triangular-ovate petals with auriculate bases and glabrous margins, and a relatively large lip with a subquadrate basal portion and a broad distal portion abruptly expanded into a suborbicular to flabellate disc, divided into two large symmetrical lobes by a distinct apical cleft. The new species is compared with the most morphologically similar species of the Ponthieva rostrata group. A detailed description, illustrations, a morphological comparison, information on its distribution and ecology, a preliminary assessment of its conservation status, and a key to the species of the Ponthieva rostrata group are provided.

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How to Cite

Gamarra, L.V., Martínez, R.V. & Gonzáles, R.D.P.R. (2026) A remarkable new species of Ponthieva (Orchidaceae: Spiranthinae) from Yanachaga Chemillén National Park, Peru. Phytotaxa 781 (2): 165–176. https://doi.org/10.11646/phytotaxa.781.2.6