Two new genera and species of Linderniaceae (Lamiales) from inselbergs in northeastern Brazil: morphological and karyological evidence
Resource type
Journal article
Creator (person)
Almeida, Erton
Wanderley, Artur
Santos, Amanda
De Melo, JosÉ
Souza, Gustavo
Da Costa Batista, Fabiane
Christenhusz, Maarten
Felix, Leonardo
Date published
April 8, 2019
Abstract
During field studies of the inselbergs of northeastern Brazil, two potentially new species of were discovered. They share morphological characters with several genera of Linderniaceae (Lamiales) such as Ameroglossum , Cubitanthus and Stemodiopsis , but the morphological differences are such that they do not make a good fit with any of the known genera in Linderniaceae. They are most likely related to Ameroglossum , and like most members of this genus the plants have a conserved chromosome number of 2 n = 60. Their exclusive occurrence on inselbergs in northeastern Brazil also hint at this relationship, but because their morphology differs greatly from Ameroglossum and each other, the two new species are described in separate genera. Catimbaua is a pendent plant somewhat similar to Cubitanthus , but with different stem morphology and indumentum. Isabelcristinia grows in habitats similar to, but drier than, Ameroglossum and is vegetatively similar. However, it is covered in glandular hairs and has open-throated white flowers rather than the red or orange tubular flowers found in Ameroglossum . Catimbaua pendula and Isabelcristinia aromatica are rare, and both are likely to fall in a category of threat.
Journal title
Phytotaxa
Volume
400
Issue
4
ISSN
1179-3163
Rights statement
In Copyright