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- Anderson, Heidi, et al.
(författare)
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(087–090) Proposal to treat the use of a hyphen in the name of a fossil-genus as an orthographical error
- 2015
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Ingår i: Taxon. - : International Association for Plant Taxonomy. - 0040-0262 .- 1996-8175.
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Tidskriftsartikel (refereegranskat)abstract
- We propose modifications to the Code such that use of a hyphen in the name of a fossil-genus is treated as an error to be corrected by deletion of the hyphen. This will circumvent the need to conserve the numerous de-hyphenated names against unused hyphenated forms. We propose changes to Art. 60 of the Code to allow this correction, and the addition of a phrase in Art. 20 to add clarity to the naming of fossil-genera.
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| 5. |
- Bengtson, Annika, 1982-, et al.
(författare)
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Phylogeny of the Athroismeae (Asteraceae), with a new circumscription of the tribe
- 2017
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Ingår i: Taxon. - : Wiley. - 0040-0262 .- 1996-8175. ; 66:2, s. 408-420
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Tidskriftsartikel (refereegranskat)abstract
- Athroismeae is a small tribe of the Asteraceae-Asteroideae, the members of which show considerable variation in morphology. A molecular phylogenetic study of the tribe is presented for the first time, based on plastid (ndhF, trnH-psbA, trnL-trnF) and nuclear data (ETS, ITS). The phylogenetic relationships between the different genera within Athroismeae are discussed, and in addition, three unispecific genera: Anisochaeta, Artemisiopsis and Symphyllocarpus as well as Duhaldea (Inula) stuhlmannii, all earlier placed in other tribes, are here shown to belong within Athroismeae. Symphyllocarpus is sister to Centipeda and the earlier Symphyllocarpinae includes Centipedinae in synonymy. Furthermore, Cardosoa and Philyrophyllum are found to be integrated within Anisopappus and their generic status cannot be maintained. An outline of an amended circumscription of the Athroismeae is presented, with three new combinations and a description of the new subtribe Lowryanthinae.
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- De Block, Petra, et al.
(författare)
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Molecular phylogenetics and generic assessment in the tribe Pavetteae (Rubiaceae)
- 2015
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Ingår i: Taxon. - : Wiley. - 0040-0262 .- 1996-8175. ; 64:1, s. 79-95
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Tidskriftsartikel (refereegranskat)abstract
- This is the first phylogenetic study focused on the Pavetteae, one of the most species-rich and morphologically diverse tribes within the coffee family (Rubiaceae). Fifteen of the 17 currently recognized genera, represented by 85 taxa, were sequenced for rps16, trnT-F and ITS and analysed using Bayesian inference and maximum likelihood methods. The monophyly of the Pavetteae is confirmed. Four major lineages are identified, but their phylogenetic relationships are not fully resolved. The continental African genera Rutidea, Nichallea and Tennantia, the Madagascan genera Homollea and Robbrechtia, and the paleotropical genus Pavetta are monophyletic. Other genera are paraphyletic in their current circumscriptions and the following changes are made: Homolliella is placed in synonymy with Paracephaelis, and Coleactina and Dictyandra with Leptactina, resulting in four new combinations. The large paleotropical genus Tarenna is shown not to be monophyletic. In the future, the name Tarenna should not be used for continental African species. Most of these could be transferred to the hitherto monospecific genus Cladoceras, but other species might constitute altogether new genera. The relationship between the monophyletic Asian-Pacific and Madagascan Tarenna species remains unclear. The phylogeny of the Madagascan genera of the Pavetteae is largely unresolved and the largest Madagascar-centred genus Coptosperma was not recovered as monophyletic. The low resolution for the Madagascan taxa can be considered as an indication of rapid radiation. Further molecular and morphological studies are necessary to clarify the phylogeny of the Pavetteae, especially regarding the African Tarenna species and the Madagascan genera of the tribe.
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| 7. |
- de Boer, Hugo, 1978-, et al.
(författare)
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Convergent morphology in Alpinieae (Zingiberaceae) : Recircumscribing Amomum as a monophyletic genus
- 2018
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Ingår i: Taxon. - : Wiley. - 0040-0262 .- 1996-8175. ; 67:1, s. 6-36
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Tidskriftsartikel (refereegranskat)abstract
- The tropical ginger genus Amomum (Zingiberaceae) has always posed challenges for classification based on morphological characters. Previous molecular phylogenetic studies showed Amomum to be paraphyletic but limited sampling and absence of the data of the type Amomum subulatum made it impossible to resolve the paraphyly and make nomenclatural changes. Here, Amomum is further investigated in a multi-marker phylogenetic framework using matK and nrITS including multiple accessions of the type, the genus Elettaria and additional accessions of Amomum, Alpinia, Elettariopsis, Geocharis, Geostachys and Hornstedtia. Amomum is shown to consist of nine clades and Alpinia of six. The genera Elettaria, Elettariopsis, Plagiostachys, and species in Hornstedtia are nested within these clades. Morphological studies of species previously subsumed in Amomum support recognition of new genera that correspond to well-delimited clades in the phylogenetic framework presented here. Recircumscription of the paraphyletic genus Amomum facilitates identification and creates nomenclatural stability. Three genera, Conamomum, Meistera and Wurfbainia, are resurrected, and three new genera Epiamomum, Lanxangia and Sundamomum are described, together with a key to the genera and a nomenclatural synopsis placing 384 specific names (incl. all synonyms) into the new generic framework. Of these 129 represent new combinations and 3 are replacement names. Types of Geocharis and Geostachys are designated. Further studies and specific sampling will be needed to resolve other branches of Alpinioideae containing other polyphyletic genera.
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- Ferm, Julia, et al.
(författare)
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Phylogeny of the Neotropical legume genera Zygia and Marmaroxylon and close relatives
- 2019
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Ingår i: Taxon. - : International Association for Plant Taxonomy. - 0040-0262 .- 1996-8175. ; 68:4, s. 661-672
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Tidskriftsartikel (refereegranskat)abstract
- The Neotropical legume genera Zygia and Marmaroxylon have traditionally been considered closely related and are sometimes treated as congeners. They have been referred to the mimosoid tribe Ingeae based on their possession of flowers with basally fused stamen filaments. However, their systematic status and position have not been analysed in a phylogenetic context. This study provides the first molecular phylogeny of Zygia and Marmaroxylon and closely related mimosoid legume genera, particularly from the tribe Ingeae. DNA sequence data were derived from the nuclear external transcribed spacer (ETS) and the internal transcribed spacer (ITS), and from the chloroplast psbA-trnH and trnL-trnF regions, and were analysed using Bayesian inference. In all, 29 species of Zygia and 7 species of Marmaroxylon were included in the study along with representative species from the closely related genera Abarema, Acacia s.str., Archidendropsis, Calliandra, Chloroleucon, Cojoba, Faidherbia, Havardia, Hydrochorea, Inga, Leucochloron, Macrosamanea, Pithecellobium, Pseudosamanea, Samanea, Senegalia, Vachellia and Zapoteca. The results show that neither Zygia nor Marmaroxylon are monophyletic as presently circumscribed. Furthermore, these two genera are not monophyletic together. None of the nine presently recognized sections of Zygia that contain more than one species are shown to be monophyletic. Two of the monospecific sections of Zygia, sect. Ingopsis (Z. inundata) and sect. Pseudocojoba (Z. sabatieri), were found in a clade together with species of Inga. Marmaroxylon ocumarense and M. magdalenae, previously treated as synonyms (as Zygia), are not conspecific, and are found in a clade with Macrosamanea and in a clade with species of Abarema and Hydrochorea, respectively. Our results also show the Inga alliance to be non-monophyletic. In correspondence with the results presented, all species referred to Marmaroxylon, except for M. ocumarense and M. magdalenae, are here included in Zygia, and Z. inundata is treated in Inga, in which genus it was first described.
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- Ghorbani, Abdolbaset, et al.
(författare)
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Botanical and floristic composition of the Historical Herbarium of Leonhard Rauwolf collected in the Near East (1573-1575)
- 2018
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Ingår i: Taxon. - : INT ASSOC PLANT TAXONOMY-IAPT. - 0040-0262 .- 1996-8175. ; 67:3, s. 565-580
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Tidskriftsartikel (refereegranskat)abstract
- The German doctor and botanist Leonhard Rauwolf (1535-1596) was the first post-medieval European to travel to the Levant and Mesopotamia. The travel account that he published on his hazardous journey (1573-1575) is well studied, but the plants he collected during his travels have hardly been subjected to scientific study. The fourth volume of Rauwolf's 16th century book herbarium includes plant specimens collected from the area encompassing modern-day Lebanon, Syria and Iraq. We digitized this valuable historic collection, identified all specimens in the herbarium, analyzed its floristic composition, transcribed and translated the Latin and German texts accompanying each specimen and updated the names with the latest accepted nomenclature. The herbarium book includes 191 specimens representing 183 species belonging to 64 families. It includes original specimens of Linnaean type illustrations as well as historical crop cultivars from the Near East. The Rauwolf Herbarium gives a unique insight in the exotic, unknown and useful species of the Near East from the perspective of a 16th century European botanist.
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