Abstract 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; compare two classifications the family published 2015 (Soreng et al. Kellogg). The subfamilies (in descending order based on number species) are Pooideae with 3968 202 15 30 Panicoideae 3241 247 13 19 Bambusoideae 1670 125 three Chloridoideae 1602 124 26 Aristidoideae 367 one tribe; Danthonioideae 292...

Abstract We present an updated worldwide phylogenetic classification of Poaceae with 11 783 species in 12 subfamilies, 7 supertribes, 54 tribes, 5 super subtribes, 109 and 789 accepted genera. The subfamilies (in descending order based on the number species) are Pooideae 4126 219 genera, 15 34 subtribes; Panicoideae 3325 242 14 24 Bambusoideae 1698 136 3 19 Chloridoideae 1603 121 30 Aristidoideae 367 three genera one tribe; Danthonioideae 292 1 Micrairoideae 192 nine tribes; Oryzoideae 117 4...

In this study, we analyzed 313 plastid genomes (plastomes) of Poaceae with a focus on expanding our current knowledge relationships among the subfamily Pooideae, which represented over half dataset (164 representatives). total, 47 plastomes were sequenced and assembled for study. This is largest study its kind to include plastome-level data, not only increase sampling at both taxonomic molecular levels aim resolving complex reticulate relationships, but also analyze effects alignment gaps in...

Croton scarciesii (Euphorbiaceae-Crotonoideae), a rheophytic shrub from West Africa, is shown to have been misplaced in for 120 years, having none of the diagnostic characters that genus, but rather set present no known genus family. Pollen analysis shows new Karima belongs inaperturate crotonoid group. Analysis concatenated molecular dataset combining trnL-F and rbcL sequences positioned as sister Neoholstia south eastern tropical Africa well-supported clade comprised genera subtribes...

The catalogue of extinct plants in Spain, comprising 27 taxa is updated. Included are four species not previously classified as Spain: Cyclamen purpurascens, Grammitis quaerenda, Stratiotes aloides and Vallisneria spiralis . We analyze the causes extinction explore possible influence botanical collections loss. obtained data suggest that habitat loss has been main cause impact collecting demonstrated to be irrelevant. list 21 have designated previous catalogues but which no longer status, 14...

Abstract To investigate the evolutionary relationships among species of Trisetum and other members subtribe Koeleriinae, a phylogeny based on DNA sequences from four gene regions (ITS, rpl32‐trnL spacer, rps16‐trnK rps16 intron) is presented. The analyses, including type all genera in Koeleriinae ( Acrospelion, Avellinia, Cinnagrostis, Gaudinia, Koeleria, Leptophyllochloa, Limnodea, Peyritschia, Rostraria, Sphenopholis, Trisetaria, Trisetopsis, ), along with three outgroups, confirm previous...

Abstract To investigate the evolutionary relationships and biogeographical history among species of Calamagrostis other members subtribes Agrostidinae, Calothecinae, Echinopogoninae, Paramochloinae, we generated a phylogeny based on DNA sequences from one nuclear ribosomal (ITS) three plastid regions ( rpl32‐trnL spacer, rps16‐trnK rps16 intron). Based our phylogeny, identified seven groups (clades) within : Meridionalis group comprises two Central South America, Americana North Deyeuxia...

Background and aims – Specimens of a new tree species in the genus Drypetes (Putranjivaceae) distributed Cameroon eastern Nigeria, D. stevartii , were associated with verrucosa another endemic to Gabon, due its warty fruits overall morphological resemblances both species. Material methods The present study is based on 20 gatherings 26 . Morphological observations herbarium specimens belonging carried out order describe them. Key results This treatment includes detailed descriptions these two...

An updated checklist of the vascular plants Annobón Island (Equatorial Guinea) is presented. Two hundred and ninety-five taxa Angiosperms in 211 genera 68 families 51 species Pteridophytes 31 18 are listed from Annobón. The most represented Leguminosae (38 taxa), Gramineae (29 taxa) Orchidaceae (28 taxa). In addition bibliographic references have been collated checked. Thirty-eight included based on records literature where their distribution ranges suggest they should occur Fifty-four...

Based on a molecular DNA phylogeny of three plastid ( rpl32-trnK , rps16 intron, and rps16-trnK ) nuclear ITS regions investigating 32 species Agrostidinae, we describe two new genera, Agrostula gen. nov. with single Alpagrostis four species; provide support for five in monophyletic Podagrostis ; include small sample 12 Agrostis s.s. (including the type most Neoschischkinia ), that separates into clades corresponding to A. subg. Vilfa. differs from having leaf blades pillars sclerenchyma...

A taxonomic revision of Trisetum Pers. sect. is presented. We include descriptions and synonyms each taxon from a study 894 vouchers 45 herbaria. Detailed morphometric descriptions, illustrations, distribution maps, an identification key, habitat data are given for taxon. Morphometric variation the main characters shown by box plots. Thirty-one names lectotypified. Two neotypes designated. recognize eight species in section: T. alpestre (Host) P. Beauv., altaicum Stephan ex Roshev.,...

This study provides a checklist of the Acalyphoideae (Euphorbiaceae) present in Equatorial Guinea, comprised 18 genera and 49 taxa. Identification keys have been added for species subfamily. The best represented genus is Macaranga with ten species. Bibliographical references from Guinea gathered checked. Eight taxa are recorded first time country. One included based on literature records, because its distribution ranges suggest it may occur two introduced could be naturalized.

Ataxonomic revision of Trisetum sect. Acrospelion is presented.We include descriptions and synonyms each taxon from a study 670 vouchers 45 herbaria. Detailed morphometric descriptions, illustrations, distribution maps, identification key, habitat data are given for taxon. Twelve names lectotypified: Aira halleri Honck., Avena argentea Willd., brevifolia Host, daenensis Boiss., distichophylla Vill., argenteum var. parviflorum Parl., cavanillesianum Borja & Font Quer, distichophyllum subsp....

Abstract Geranium sect. Trilopha (Geraniaceae) consists of seven species: G. biuncinatum, brevipes, favosum, mascatense, ocellatum, trilophum, and yemense. The highest diversity the group is located in Iran, Arabian Peninsula, adjacent regions northeast Africa with five endemic species. One species occurs Himalayas another widespread mountains tropical Africa. In contrast current literature, we consider yemense to be a separate from brevipes also ocellatum. Micromorphological features...

We present a list of taxa vascular plants growing on Bioko (Equatorial Guinea). are aware that there still many unexplored areas,so it should be consider just as first draft list. It is based both herbarium specimens and bibliographic references. The complete data, supportingeach record, can consulted in our online database at http://www.floradeguinea.com/herbario/. To the moment, known 2029taxa from island.

We describe here two new species of the African tropical genus Discoclaoxylon (Müll. Arg.) Pax & K. Hoffm. (Euphorbiaceae), D. ikabangae O. Lachenaud and korupense Barberá Quintanar. The former is endemic to Gabon preliminarily assessed as “Endangered,” while latter Cameroon “Vulnerable.” Both differ from rest by their fruits, which are less strongly didymous have carpels connate for whole length; further remarkable its long stylar segments tall habit leaves with subentire margins. A...

We present a preliminary discussion about cauliflory, sexual dimorphism and biogeographic patterns in Drypetes Vahl (Putranjivaceae Endl.), focused on Africa. also taxonomic treatment for two new species of cauliflorous trees this genus from the rainforests western Central Africa, one endemic to Gabon known six gatherings, D. aphanes Quintanar, D.J.Harris & Barberá sp. nov., other distributed Republic Congo, cauta D.J.Harris, Quintanar another gatherings. They are presented along with...