AUTHOR=Baranow Przemyslaw , Szlachetko Dariusz , Kindlmann Pavel 

TITLE=Taxonomic revision of Sobralia section Racemosae Brieger (Sobralieae, Orchidaceae)

JOURNAL=Frontiers in Ecology and Evolution

VOLUME=10

YEAR=2023

URL=https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2022.1058334

DOI=10.3389/fevo.2022.1058334

ISSN=2296-701X

ABSTRACT=<p><italic>Sobralia</italic> Ruiz &amp; Pav. is a large and morphologically diverse neotropical orchid genus. It can be divided into four sections and some informal groups of species based mainly on the inflorescence architecture. While most of the species have strongly abbreviated, compact raceme, the section <italic>Racemosae</italic> is characterized by an elongated inflorescence with distinct internodes between flowers. Although the group is well-defined and easily distinguishable in terms of morphology, its species are often similar to each other and may be easily misidentified. Identification is especially difficult when considering herbarium specimens. Here, a taxonomic revision of <italic>Sobralia</italic> section <italic>Racemosae</italic> is presented. Apart from particular species’ morphological characteristics, keys for identification, ecological data, and distribution maps are presented. <italic>Sobralia gambitana</italic> is described as a species new to science. A neotype for <italic>S. hoppii</italic> Schltr. is proposed.</p>