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| Amanoa condorensis J.L.Clark & D.A.Neill, in Clark et Neill, 2023. |
Abstract
A new species of Amanoa (Phyllanthaceae) is described from the sandstone Nangaritza Plateau in the Cordillera del Cóndor Region in southern Ecuador. Amanoa condorensis J.L.Clark & D.A.Neill is a small tree, 4 m tall that is only known from the type collection. The new species is distinct by a shrub habit, presence of coriaceous leaves with an acuminate apex, and congested inflorescences. The relatively high elevation of the type locality, presence of an androphore, and the habit as shrub or low tree are an unusual combination for Amanoa. The conservation status of A. condorensis is assessed as Critically Endangered (CR), based on IUCN Criteria.
Key words: Andean tepui, Andes, androphore, Ecuador, Nangaritza Plateau, Phyllanthaceae, taxonomy
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| Amanoa condorensis J.L.Clark & D.A.Neill A–C mature staminate flower featuring prominent sepals, reduced petals, extra-staminal disc and androphore D shoot featuring two-ranked foliage and congested inflorescences. (A–D J.L. Clark, D.A. Neill & J. Mayr 15257). Photos by John L. Clark. |
Amanoa condorensis J.L.Clark & D.A.Neill, sp. nov.
Diagnosis: Amongst the Neotropical species of Amanoa, A. condorensis shares with A. almerindae Leal. and A. caribaea Krug & Urb. the presence of an androphore, formed from the fusion of the basal filaments. Differs from Amanoa almerindae by the densely pubescent and more widely-spaced flowers along an inflorescence axis 5.5–11 cm long in A. almerindae vs. nearly glabrous inflorescence axis to 4.5 cm long in A. condorensis. Differs from A. caribaea by the presence of inflorescences in an elongate erect raceme appearing congested throughout vs. inflorescences in elongate erect spikes with evenly-spaced fascicles (i.e. not congested throughout) in A. caribaea.
Etymology: The specific epithet is derived from the Cordillera del Cóndor mountain range in southern Ecuador where this species is presumably endemic.
John L. Clark and David A. Neill. 2023. Amanoa condorensis (Phyllanthaceae), A New Shrubby Species from the Cordillera del Condor in southern Ecuador. PhytoKeys. 227: 89-97. DOI: 10.3897/phytokeys.227.104703
Resumen: Se describe una nueva especie de Amanoa (Phyllanthaceae) de la meseta de arenisca de Nangaritza en la región de la Cordillera del Cóndor en el sur de Ecuador. Amanoa condorensis J.L.Clark & D.A.Neill es un pequeño árbol de 4 metros de altura que sólo se conoce de la colección tipo. La nueva especie se distingue por la presencia de inflorescencias congestionadas, hojas coriáceas con ápice acuminado, y porte arbustivo. La elevación relativamente más alta de la localidad tipo, la presencia de un andróforo, y el hábito de arbusto o árbol pequeño son una combinación inusual para Amanoa. El estado de conservación de A. condorensis se evalúa como En Peligro Crítico (CR) según los Criterios de la UICN.
