Patricia Barberá

Missouri Botanical Garden · Africa and Madagascar

Ce document présente les plans d'actions de conservation multi-espèces définis pour les 101 espèces et infra-espèces d'arbres les plus menacées du Gabon, dans le but de garantir leur survie.

This account provides information on all aspects of the biology of Festuca dolichophylla J. Presl (Chilliwa, Chilligua) that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the International Biological Flora including distribution, habitat, communities, respo...

We present a preliminary discussion about cauliflory, sexual dimorphism and biogeographic patterns in Drypetes Vahl (Putranjivaceae Endl.), focused on Africa. We also present a taxonomic treatment for two new species of cauliflorous trees of this genus from the rainforests of western Central Africa, one endemic to Gabon and known from six gathering...

Se presenta un catálogo actualizado de las plantas vasculares de la región continental de Guinea Ecuatorial (Río Muni). El catálogo es fruto de la compilación de especímenes de herbario (6,850), registros de especies de la literatura botánica (7,985) y bases de datos en línea (10,109 registros de GBIF y 8,897 de RAINBIO). Se elaboró una base de dat...

Background and aims – Specimens of a new tree species in the genus Drypetes (Putranjivaceae) distributed in Cameroon and eastern Nigeria, D. stevartii , were associated with D. verrucosa , another tree species endemic to Gabon, due to its warty fruits and to the overall morphological resemblances of both species. Material and methods – The present...

We describe here two new species of the African tropical genus Discoclaoxylon (Müll. Arg.) Pax & K. Hoffm. (Euphorbiaceae), D. ikabangae O. Lachenaud and D. korupense Barberá & Quintanar. The former species is endemic to Gabon and is preliminarily assessed as "Endangered," while the latter is endemic to Cameroon and is preliminarily assessed as "Vu...

The oceanic islands of the Gulf of Guinea display a large diversity of environmental conditions and biological communities, whose interactions have contributed to the development of a great variety of ecosystems, from mangroves to montane grasslands. Human activities have extensively and profoundly altered many of these natural ecosystems over the...

Despite a long history of botanical collecting in the three oceanic islands of the Gulf of Guinea, no recent studies have documented floristic patterns. This chapter summarizes information on the vascular plants of the islands, including inventories conducted on Príncipe and São Tomé since 2017, as well as two recent expeditions to Annobón. An upda...

In this data paper, we present a specimen-based occurrence dataset compiled in the framework of the Conservation of Endemic Central African Trees (ECAT) project with the aim of producing global conservation assessments for the IUCN Red List. The project targets all tree species endemic or sub-endemic to the Central African region comprising the Dem...

The formerly monotypic genus Paranecepsia Radcl.-Sm. is expanded with the description and illustration of a second species, Paranecepsia andrafiabensis Barberá & O.Lachenaud sp. nov. Molecular phylogenetic analyses of plastid rbcL and trnL-F data confirm a sister relationship between the new species and P. alchorneifolia Radcl.-Sm., as members of t...

We publish in this article a new species of tree of Drypetes (Putranjivaceae) from the Democratic Republic of the Congo and Republic of the Congo, D. palustris, which occurs in the Western Congolian Swamp Forests ecoregion. It is known from eight gatherings and we compare it with the species with the most similar morphology, D. calvescens, of which...

Drypetes is a pantropical genus of ca. 210 species, of which 80 are found in forests and savannas throughout sub-Saharan Africa and the Malagasy Region. It has been suggested that the genus is an indicator of good-quality, undisturbed forests. Species of Drypetes are shrubs or medium-sized trees. Leaves are simple, petiolate and present a slightly...

We present an updated worldwide phylogenetic classification of Poaceae with 11,783 species in 12 subfamilies, seven supertribes, 54 tribes, five supersubtribes, 109 subtribes, and 789 accepted genera. The subfamilies (in descending order based on the number of species) are Pooideae with 4126 species in 219 genera, 15 tribes, and 34 subtribes; Panic...

To investigate the evolutionary relationships and biogeographical history among the species of Calamagrostis and other members of subtribe Agrostidinae, Calothecinae, Echinopogoninae, and Paramochloinae, we generated a phylogeny based on DNA sequences from one nuclear ribosomal and three plastid areas (ITS, rpl32‐trnL spacer, rps16‐trnK spacer, and...

Drypetes polyantha is a tree up to 20 m and 50 cm diameter, known from terra firme and gallery forests, between 300 and 1,950 m in elevation. The species is endemic to Central Africa occurring in Cameroon, Central African Republic, Republic of the Congo and Democratic Republic of the Congo. It is known from 248 collections made between 1910 and 201...

Drypetes euryodes is a shrub or small tree 3-3.6 m high collected in woody rocky cliffs at around 1,000 m in elevation. The species is endemic to Angola and is only known from one collection made by Welwitsch in 1857 at Pungo Andongo (Malanje province), thus representing a single occurrence. Drypetes euryoides was previously cited for Gabon by Sose...

Drypetes spinosodentata is a tree up to 25 m tall and 40 cm DBH, known from primary and secondary forest and from riverine forest, between 150 and 1000 m in elevation. The species is endemic to Central Africa occurring in Nigeria, Cameroon, and Gabon. It is known from 35 collections and human observations made between 1901 and 2017. Drypetes spinos...

Drypetes calvescens is a tree to 14 m tall, known from terra firme forest and gallery forest, between 250 to 1900 m in elevation. The species is endemic to Central Africa, occurring in Cameroon, Gabon, Central African Republic, Democratic Republic of the Congo, and Equatorial Guinea (Río Muni). The species is known from 45 collections made between...

Chaetocarpus gabonensis has most recently been assessed for The IUCN Red List of Threatened Species in 2020. Chaetocarpus gabonensis is listed as Vulnerable under criteria B1ab(iii)+2ab(iii).

This chapter of Flora du Gabon includes 29 species of the genus Drypetes Vahl (Putranjivaceae Endl.) that grow spontaneously in Gabon. The identification of these species is facilitated by means of a key and it is offered for each one of them: the scientific name considered correct and its synonyms, its morphological description, available drawings...

Tratamiento taxonómico del género Trisetum Pers. (Gramineae) para la flora de la Península Ibérica e Islas Baleares

During his stay in Yangambi in the 1940s, the Belgian botanist J. Léonard collected a endangered species of tree (to 35 m high) of the genus Drypetes endemic to DRC. He named it D. morocarpa on herbarium labels, but never published it. Drypetes morocarpa J.Léonard ex D.J. Harris & Quintanar is easily recognizable by its blackish twigs and young bra...

We present an annotated checklist of the 14 species of Drypetes Vahl (Putranjivaceae) that occur in Liberia, as well as distribution maps of the country for each. Three species are new records for Liberia: D. floribunda (Müll. Arg.) Hutch., D. klainei Pierre ex Pax, and D. laciniata (Pax) Hutch. In addition, we describe a new species, D. liberica Q...

Here we publish a new species of forest tree of the genus Drypetes Vahl (Putranjivaceae), D. umbricola D. J. Harris & Quintanar, which has a wide distribution in Central Africa (Cameroon, Central African Republic, Democratic Republic of the Congo, Gabon, and Republic of the Congo). It is known from 70 herbarium collections and additional sterile pl...

In this study, we analyzed 313 plastid genomes (plastomes) of Poaceae with a focus on expanding our current knowledge of relationships among the subfamily Pooideae, which represented over half the dataset (164 representatives). In total, 47 plastomes were sequenced and assembled for this study. This is the largest study of its kind to include plast...

Englerophytum libenii is a small understory tree 6-8 m high and 10-30 cm in diameter known from mature and secondary forest on drained soils, up to 400 m in elevation. The species is endemic to central Africa occurring in southwest Cameroon and central Gabon. It is known from four collections, of which three were made in Gabon: one made by Breteler...

Based on a molecular DNA phylogeny of three plastid (rpl32-trnK, rps16 intron, and rps16-trnK) and nuclear ITS regions investigating 32 species of Agrostidinae, we describe two new genera, Agrostula gen. nov. with a single species and Alpagrostis gen. nov. with four species; provide support for five species in a monophyletic Podagrostis; and includ...

Background-During his stay in Yangambi in the 1940s, the Belgian botanist J. Léonard collected a species of the genus Drypetes endemic to the Democratic Republic of the Congo. He named it D. morocarpa on herbarium labels, but never published it. Methods-The present study is based on the revision of 26 collections of D. morocarpa. Morphometric measu...

Andropogon ischaemum L., Sp. Pl.: 1047. 1 Mai 1753 [Angiosp.:Gram.], nom. cons. prop.Typus: Herb. Burser I: 101 (UPS), typ. cons. prop.

Based on morphological and molecular evidence we transfer the species of Trisetum sect. Trisetaera, T. hispidum, and Trisetokoeleria taymirica into Koeleria, describe Koeleria sect. Hispanica, and provide a new generic emendation. A total of 49 new combinations or new names are included. Additionally, we lectotypify Avena clarkei Hook f., Avena mic...

Based on morphological and molecular evidence we present new combinations or new names for 77 taxa of Cinnagrostis, seven taxa of Deschampsia, and 24 taxa of Peyritschia; and describe three new genera, Greeneochloa P.M. Peterson, Soreng, Romasch. & Barberá, gen. nov. (subtribe Echinopogoninae), Paramochloa P.M. Peterson, Soreng, Romasch. & Barberá,...

Based on morphological and molecular evidence we present new combinations or new names for 77 taxa of Cinnagrostis, seven taxa of Deschampsia, and 24 taxa of Peyritschia; and describe three new genera, Greeneochloa P.M. Peterson, Soreng, Romasch. & Barberá, gen. nov. (subtribe Echinopogoninae), Paramochloa P.M. Peterson, Soreng, Romasch. & Barberá,...

To investigate the evolutionary relationships among the species of Trisetum and other members of subtribe Koeleriinae a phylogeny based on DNA sequences from four gene regions (ITS, rpl32‐trnL spacer, rps16‐trnK spacer, and rps16 intron) is presented. The analyses, including type species of all genera in Koeleriinae (Acrospelion, Avellinia, Cinnagr...

A taxonomic revision of Trisetum Pers. sect. Trisetum is presented. We include descriptions and synonyms of each taxon from a study of 894 vouchers from 45 herbaria. Detailed morphometric descriptions, illustrations, distribution maps, an identification key, and habitat data are given for each taxon. Morphometric variation of the main characters is...

Ataxonomic revision of Trisetum sect. Acrospelion is presented.We include descriptions and synonyms of each taxon from a study of 670 vouchers from 45 herbaria. Detailed morphometric descriptions, illustrations, distribution maps, identification key, and habitat data are given for each taxon. Twelve names are lectotypified: Aira halleri Honck., Ave...

A taxonomic revision of Trisetum sect. Sibirica is presented. We include descriptions and synonyms of each taxon from a study of 450 vouchers from 35 herbaria. Detailed morphometric descriptions, illustrations, distribution maps, identification key, and habitat data are given for each taxon. An identification key for all taxa of Trisetum sect. Sibi...

We examine various aspects of Joseph Quer's Flora espanõla (1762-1764, 1784), taking into consideration the contributions made by Casimiro Gómez Ortega and proposing that he be credited as a co-author on the last two volumes of the work. Flora espanõla comprises 2602 species, 2493 of which are vascular plants, including both wild and cultivated spe...

We present a new worldwide phylogenetic classification of 11 506 grass species in 768 genera, 12 subfamilies, seven supertribes, 52 tribes, five supersubtribes, and 90 subtribes; and compare two phylogenetic classifications of the grass family published in 2015 (Soreng et al. and Kellogg). The subfamilies (in descending order based on the number of...

Geranium sect. Trilopha (Geraniaceae) consists of seven species: G. biuncinatum, G. brevipes, G. favosum, G. mascatense, G. ocellatum, G. trilophum, and G. yemense. The highest diversity of the group is located in Iran, the Arabian Peninsula, and adjacent regions of northeast Africa with five endemic species. One species occurs in the Himalayas and...

Croton scarciesii (Euphorbiaceae-Crotonoideae), a rheophytic shrub from West Africa, is shown to have been misplaced in Croton for 120 years, having none of the diagnostic characters of that genus, but rather a set of characters present in no known genus of the family. Pollen analysis shows that the new genus Karima belongs to the inaperturate crot...

Species sampled with GenBank accession numbers for rbcL and trnL-F sequences, respectively. Voucher information is given for newly sequenced species (bold-faced). (DOCX)

Field Observations of Karima scarciesii. (DOCX)

Grossera angustifolia, a new species of Euphorbiaceae from Equatorial Guinea, is described and illustrated. The new species belongs to sect. Grossera and it is most similar to G. paniculata, but the two species can be readily distinguished by several leaf characters. A key for the species of sect. Grossera is provided.

The catalogue of extinct plants in Spain, comprising 27 taxa is updated. Included are four species not previously classified as extinct in Spain: Cyclamen purpurascens, Grammitis quaerenda, Stratiotes aloides and Vallisneria spiralis. We analyze the causes of extinction and explore the possible influence of botanical collections in species loss. Th...

An updated checklist of the vascular plants of Annobón Island (Equatorial Guinea) is presented. Two hundred and ninety-five taxa of Angiosperms in 211 genera and 68 families and 51 species of Pteridophytes in 31 genera and 18 families are listed from Annobón. The most represented families are Leguminosae (38 taxa), Gramineae (29 taxa) and Orchidace...

Abstract— Grossera (Euphorbiaceae) is a genus with eight species of trees and shrubs, seven of them from West and Central Tropical Africa and one from Madagascar. It occurs in a wide range of habitats, from primary to degraded forest, and from sea level to 1,350 m. Grossera is characterized by unisexual flowers, terminal inflorescences, anthers in...

Discoclaoxylon pubescens (Pax & K. Hoffm.) Exell, endemic to Annobón Island (Equatorial Guinea), is here lectotypified from Mildbraed´s original material found in the Herbarium Biozentrum Klein-Flottbek of Hamburg (HBG). A detailed morphological description of the female characters (flower and fruit), before unknown, is provided, completing the ear...

The Flora of Equatorial project continues, presenting the first of 3 volumes of Monocotyledons. Here a total of 232 taxa are included, comprising 15 families, from Bromeliaceae to Cyperaceae, following the classification proposed by Takhtajan in his Diversity and Classification of flowering plants (1997). The volume is very heterogeneous and derive...

This study provides a checklist of the Acalyphoideae (Euphorbiaceae) present in Equatorial Guinea, comprised of 18 genera and 49 taxa. Identification keys have been added for genera and species of the subfamily. The best represented genus is Macaranga with ten species. Bibliographical references for Acalyphoideae (Euphorbiaceae) from Equatorial Gui...

Cited By (since 1996):1, Export Date: 21 February 2014, Source: Scopus

Flora of Equatorial Guinea is a research project coordinated by the Real Jardín Botánico of Madrid with the aim to produce a modern Flora for this almost unknown territory. One of our goals is to develop the website www. floradeguinea.com. A system of relational databases with an implemented Thesaurus -to minimize typographical mistakes -allows the...

From the global change perspective, increase of atmospheric CO2 and land cover transformation are among the major impacts caused by human activities. In this study, we are addressing the combined issues of the effect of CO2 concentration increase and plant type on soil microbial activities by asking how annual and perennial plant groups affect soil...