scholarly journals Redescription of Conniella apterygia Allen and its reassignment in the genus Cirrhilabrus Temminck and Schlegel (Teleostei: Labridae), with comments on cirrhilabrin pelvic morphology

Zootaxa ◽  
2021 ◽  
Vol 5061 (3) ◽  
pp. 493-509
Author(s):  
YI-KAI TEA ◽  
GERALD R. ALLEN ◽  
CHRISTOPHER H. R. GOATLEY ◽  
ANTHONY C. GILL ◽  
BENJAMIN W. FRABLE

Conniella apterygia is redescribed from re-examination of the holotype, two paratypes, and six additional specimens. The genus is closely allied to Cirrhilabrus, sharing similarities in general morphological and meristic details, but is separated from Cirrhilabrus and most other labrid fishes in lacking pelvic fins and a pelvic girdle. Recent molecular phylogenetic studies have provided strong evidence for the deep nesting of Conniella within Cirrhilabrus, contradicting its generic validity and suggesting that the loss of pelvic elements is autapomorphic. Consequently, the species is redescribed and assigned to the genus Cirrhilabrus, as Cirrhilabrus apterygia new combination. The pelvic morphologies of related cirrhilabrin labrids are discussed, and a new synapomorphy is identified for Paracheilinus.  

2013 ◽  
Vol 70 (3) ◽  
pp. 385-404 ◽  
Author(s):  
D. J. Middleton ◽  
A. Weber ◽  
T. L. Yao ◽  
S. Sontag ◽  
M. Möller

Following recent molecular phylogenetic studies in Old World Gesneriaceae the nomenclatural implications for names in Henckelia are examined. New combinations are made in Codonoboea and Loxocarpus to account for species now excluded from Henckelia. A list is presented in which the current position of all species hitherto assigned to Henckelia is given, including the new combination Henckelia rotundata (Barnett) D.J.Middleton & Mich.Möller. A new combination in Oreocharis is made.


Phytotaxa ◽  
2017 ◽  
Vol 308 (1) ◽  
pp. 125
Author(s):  
SERGEI L. MOSYAKIN ◽  
LEILA M. SHULTZ ◽  
GANNA V. BOIKO

Following recent molecular phylogenetic studies, the genus Sphaeromeria has been synonymized with Artemisia and its taxa are included in Artemisia subg. Tridentatae. The new combination is proposed, Artemisia nuttallii (Torr. & A. Gray) Mosyakin, L.M. Shultz & G.V. Boiko, comb. nov. (= Sphaeromeria argentea Nutt., non A. argentea L’Her.; Tanacetum nuttallii Torr. & A. Gray; Artemisia macarthuri Sòn. Garcia et al., nom. illeg.). Notes on typifications of the names Sphaeromeria argentea and S. capitata Nutt. (now Artemisia capitata (Nutt.) Sòn. Garcia et al.) are provided; both are typified by Nuttall’s specimens from BM. Additional original specimens of these two species recently found in the Turczaninow memorial collection at the National Herbarium of Ukraine (KW) are discussed.


Phytotaxa ◽  
2016 ◽  
Vol 252 (1) ◽  
pp. 77 ◽  
Author(s):  
David G. Long ◽  
LAURA L. FORREST ◽  
JUAN CARLOS VILLARREAL ◽  
BARBARA J. CRANDALL-STOTLER

Molecular phylogenetic studies of complex thalloid liverworts have resolved relationships that require taxonomic and nomenclatural changes. Since Bucegia and Preissia are deeply nested within Marchantia, species formerly placed in these genera are transferred to Marchantia as Marchantia romanica, comb. nov. and Marchantia quadrata, respectively, and placed in the new subgenus, Marchantia subg. Preissia, comb. et stat. nov. The families Exormothecaceae and Corsiniaceae are merged under the earlier name Corsiniaceae. The genus Stephensoniella Kashyap becomes a synonym of Exormotheca and its sole species S. brevipedunculata is transferred to Exormotheca, with the new combination Exormotheca brevipedunculata. In the Cleveaceae, the recent recognition of Clevea as distinct from Athalamia, necessitates the new combination Clevea nana to replace the name Clevea hyalina on the basis of nomenclatural priority.


Phytotaxa ◽  
2015 ◽  
Vol 218 (3) ◽  
pp. 201 ◽  
Author(s):  
Ashley N. Egan ◽  
Bo Pan

Recent molecular phylogenetic studies (Egan et al., in prep.) have demonstrated widespread polyphyly within the genus Pueraria. A new classification is presented here that delineates monophyletic groups previously considered congeneric with Pueraria. This taxonomic treatment provides several new species combinations and a more natural circumscription of Pueraria by reinstating the genus Neustanthus, transferring one species to Teyleria and establishing two new genera: Haymondia and Toxicopueraria.


Phytotaxa ◽  
2021 ◽  
Vol 505 (3) ◽  
pp. 262-274
Author(s):  
MATIAS KÖHLER ◽  
FABIÁN FONT ◽  
RAUL PUENTE-MARTINEZ ◽  
LUCAS CHARLES MAJURE

The genus Opuntia is one of the most emblematic of the cactus family (Cactaceae) and a species-rich clade within subfamily Opuntioideae. After molecular phylogenetic studies showed that the traditional broad circumscription of Opuntia could not be retained as the genus was polyphyletic, various segregated genera were recognize based on both morphological data and phylogenetic studies. Here, we reassessed an old and enigmatic taxon, O. schickendantzii, through molecular and morphological investigations. Our results support that O. schickendantzii was best circumscribed within the Salmonopuntia lineage based on molecular and morphological features. As a consequence, a new combination is proposed, and an epitype from the herbarium BAF is designated. An updated description of the taxon with illustrations is also given.


Phytotaxa ◽  
2015 ◽  
Vol 195 (3) ◽  
pp. 248 ◽  
Author(s):  
Xue-Qin Shi ◽  
S. Robbert Gradstein ◽  
Rui-Liang Zhu

Archilejeunea (Spruce 1884: 88) Stephani (1888: 113) is a pantropical genus with about 28 species in two subgenera, subg. Archilejeunea with five species and the remaining ones in subg. Dibrachiella (Spruce 1884: 90) Schiffner (1893: 130) (Gradstein & Buskes 1985). The genus has been well-studied in the Neotropics and Australia (Gradstein & Buskes 1985; Thiers & Gradstein 1989; Gradstein 1994; Gradstein & Schäfer-Verwimp 2012) but the treatments of the African and Asiatic species are incomplete or outdated (e.g., Stephani 1911; Verdoorn 1934; Vanden Berghen 1951; Udar & Awasthi 1981a, 1982; Mizutani 1993; Gradstein et al. 2002). Several species have not been studied since their first publication. Moreover, recent molecular-phylogenetic studies indicate that Archilejeunea is not monophyletic (Wilson et al. 2007). Members of A. subg. Archilejeunea were resolved in a clade with Caudalejeunea (Stephani 1890: 18) Schiffner (1893: 129) and Schiffneriolejeunea Verdoorn (1933: 89), while those of A. subg. Dibrachiella resolved in a distant clade with species of Spruceanthus Verdoorn (1934: 151) and Ptychanthus Nees (1838: 211). As a result, the genus urgently needs revision.


Author(s):  
D. G. Melnikov ◽  
L. I. Krupkina

Based on the published data of molecular phylogenetic studies of the tribe Cariceae Dumort. genera (Cyperaceae), obtained by an international collaboration (The Global Carex Group, 2016; et al.), and morphological characters of the genera (Kukkonen, 1990; and others), new nomenclatural combinations and replacement names in the genus Carex L. are published for 11 species, one subspecies and two sections previously included in the genus Kobresia Willd.


Author(s):  
Richard W. Jobson ◽  
Paulo C. Baleeiro ◽  
Cástor Guisande

Utricularia is a morphologically and ecologically diverse genus currently comprising more than 230 species divided into three subgenera—Polypompholyx, Utricularia, and Bivalvaria—and 35 sections. The genus is distributed worldwide except on the poles and most oceanic islands. The Neotropics has the highest species diversity, followed by Australia. Compared to its sister genera, Utricularia has undergone greater rates of speciation, which are linked to its extreme morphological flexibility that has resulted in the evolution of habitat-specific forms: terrestrial, rheophytic, aquatic, lithophytic, and epiphytic. Molecular phylogenetic studies have resolved relationships for 44% of the species across 80% of the sections. Scant data are available for phylogeography or population-level processes such as gene flow, hybridization, or pollination. Because nearly 90% of the species are endemics, data are urgently needed to determine how to protect vulnerable species and their habitats.


2021 ◽  
Vol 7 (12) ◽  
pp. eabe2741
Author(s):  
Paschalia Kapli ◽  
Paschalis Natsidis ◽  
Daniel J. Leite ◽  
Maximilian Fursman ◽  
Nadia Jeffrie ◽  
...  

The bilaterally symmetric animals (Bilateria) are considered to comprise two monophyletic groups, Protostomia (Ecdysozoa and the Lophotrochozoa) and Deuterostomia (Chordata and the Xenambulacraria). Recent molecular phylogenetic studies have not consistently supported deuterostome monophyly. Here, we compare support for Protostomia and Deuterostomia using multiple, independent phylogenomic datasets. As expected, Protostomia is always strongly supported, especially by longer and higher-quality genes. Support for Deuterostomia, however, is always equivocal and barely higher than support for paraphyletic alternatives. Conditions that cause tree reconstruction errors—inadequate models, short internal branches, faster evolving genes, and unequal branch lengths—coincide with support for monophyletic deuterostomes. Simulation experiments show that support for Deuterostomia could be explained by systematic error. The branch between bilaterian and deuterostome common ancestors is, at best, very short, supporting the idea that the bilaterian ancestor may have been deuterostome-like. Our findings have important implications for the understanding of early animal evolution.


Phytotaxa ◽  
2021 ◽  
Vol 500 (2) ◽  
pp. 142-146
Author(s):  
IHSAN A. AL-SHEHBAZ ◽  
BARIŞ ÖZÜDOĞRU ◽  
DMITRY A. GERMAN

Iljinskaea is described as a new monospecific genus based on a critical evaluation of morphology and in light of the extensive molecular phylogenetic data. The new combination I. planisiliqua is proposed, and the distinguishing characters separating the new genus from Conringia are discussed. The new tribal assignment of Iljinskaea in the Isatideae is discussed and compared with the previous placement in the Conringieae.


Sign in / Sign up

Export Citation Format

Share Document