Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)

Christiana mennegae is a phylogenetically enigmatic taxon and represents a case in point of a species whose presence escaped the radar of the Amazon lists and the Brazilian Flora project. Here we expand its distribution by adding new records from Peru and overlooked ones from Brazil. To investigate...

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Autores principales:	Rafael G. Barbosa-Silva, Thales Silva Coutinho, Santelmo Vasconcelos, Delmo Fonseca da Silva, Guilherme Oliveira, Daniela C. Zappi
Formato:	article
Lenguaje:	EN
Publicado:	PeerJ Inc. 2021
Materias:	Barcode Malvales Rain forest SEM Vascular plants Medicine R
Acceso en línea:	https://doaj.org/article/8c66400a8a824c9a8366580a81f542e4
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spelling	oai:doaj.org-article:8c66400a8a824c9a8366580a81f542e42021-11-17T15:05:06ZPreliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)10.7717/peerj.122442167-8359https://doaj.org/article/8c66400a8a824c9a8366580a81f542e42021-11-01T00:00:00Zhttps://peerj.com/articles/12244.pdfhttps://peerj.com/articles/12244/https://doaj.org/toc/2167-8359Christiana mennegae is a phylogenetically enigmatic taxon and represents a case in point of a species whose presence escaped the radar of the Amazon lists and the Brazilian Flora project. Here we expand its distribution by adding new records from Peru and overlooked ones from Brazil. To investigate its phylogenetic placement in the Brownlowioideae, part of the rbcL gene of the plastid and the intergenic ITS2 region were sequenced. Macro- and micro-morphological investigation of features of C. mennegae using SEM of foliar, flower, fruit and seed structures are presented. A lectotype for the name is designated here. The morphology of trichomes revealed five types of trichomes ranging from glandular to branched and unbranched and we also report stomata on the seed surface for the first time in Brownlowioideae. Christiana mennegae and C. africana were recovered as sister species in the phylogenetic analysis, albeit with low to moderate support, and more species of this and closely related genera must be sampled and analyzed in order to obtain a clearer picture of the group’s affinities and relationships. We provide an update of its conservation status from Vulnerable to Least Concern. We also highlight the need for investment in the digitization of biological collections, botanical capacity building at the local level and the importance of the availability of online literature to speed the study of Amazonian plant diversity.Rafael G. Barbosa-SilvaThales Silva CoutinhoSantelmo VasconcelosDelmo Fonseca da SilvaGuilherme OliveiraDaniela C. ZappiPeerJ Inc.articleBarcodeMalvalesRain forestSEMVascular plantsMedicineRENPeerJ, Vol 9, p e12244 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Barcode Malvales Rain forest SEM Vascular plants Medicine R
spellingShingle	Barcode Malvales Rain forest SEM Vascular plants Medicine R Rafael G. Barbosa-Silva Thales Silva Coutinho Santelmo Vasconcelos Delmo Fonseca da Silva Guilherme Oliveira Daniela C. Zappi Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
description	Christiana mennegae is a phylogenetically enigmatic taxon and represents a case in point of a species whose presence escaped the radar of the Amazon lists and the Brazilian Flora project. Here we expand its distribution by adding new records from Peru and overlooked ones from Brazil. To investigate its phylogenetic placement in the Brownlowioideae, part of the rbcL gene of the plastid and the intergenic ITS2 region were sequenced. Macro- and micro-morphological investigation of features of C. mennegae using SEM of foliar, flower, fruit and seed structures are presented. A lectotype for the name is designated here. The morphology of trichomes revealed five types of trichomes ranging from glandular to branched and unbranched and we also report stomata on the seed surface for the first time in Brownlowioideae. Christiana mennegae and C. africana were recovered as sister species in the phylogenetic analysis, albeit with low to moderate support, and more species of this and closely related genera must be sampled and analyzed in order to obtain a clearer picture of the group’s affinities and relationships. We provide an update of its conservation status from Vulnerable to Least Concern. We also highlight the need for investment in the digitization of biological collections, botanical capacity building at the local level and the importance of the availability of online literature to speed the study of Amazonian plant diversity.
format	article
author	Rafael G. Barbosa-Silva Thales Silva Coutinho Santelmo Vasconcelos Delmo Fonseca da Silva Guilherme Oliveira Daniela C. Zappi
author_facet	Rafael G. Barbosa-Silva Thales Silva Coutinho Santelmo Vasconcelos Delmo Fonseca da Silva Guilherme Oliveira Daniela C. Zappi
author_sort	Rafael G. Barbosa-Silva
title	Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_short	Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_full	Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_fullStr	Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_full_unstemmed	Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_sort	preliminary placement and new records of an overlooked amazonian tree, christiana mennegae (malvaceae)
publisher	PeerJ Inc.
publishDate	2021
url	https://doaj.org/article/8c66400a8a824c9a8366580a81f542e4
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Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)

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