Re-discovery of Catasetum mojuense (Orchidaceae: Catasetinae), a poorly-known Amazonian species

By

Barberena, Felipe Fajardo Villela Antolin.
Costa, Deivid Lucas De Lima Da
Rocha Junior, José Antônio Lima

Type

Article

Date of Publication

2020-10-9

Original Publication

Neotropical Biology and Conservation

Volume

15

Series / Issue

Issue: 4

Pages

447--452

Subjects

Amazon , Capitão Poço , Conservation , endemism , orchid , Pará , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Brazil Universidade do Vale do Rio dos Sinos

Identifiers

DOI: https://doi.org/10.3897/neotropical.15.e54142

 

Abstract

The re-discovery of Catasetum mojuense A.T. Oliveira & J.B.F. Silva (Orchidaceae), an Amazonian species described in 1999 from the State of Pará, Brazil, is reported. In addition to geographic distribution data, a morphological description, taxonomical and ecological comments, conservation status assessment and photographs of C. mojuense are also provided. The species is characterised by having epiphytic habit, non-resupinate staminate flowers, brown-spotted petals, galeiform and smooth (no ribs) lip, lateral lobes with sparsely short-fimbriate margins and convergent antennae. Catasetum mojuense is morphologically similar to Catasetum discolor (Lindl.) Lindl, but is easily distinguished by the longer sepals and petals and the spotted petals on the staminate flowers. The new locality of occurence for C. mojuense is approximately 190 km east of the type locality, also in the State of Pará. The species is assessed as Critically Endangered. Habitat depletion and the limited number of sites of occurrence are the main concern for the conservation of C. mojuense.