The genus Sesuvium (Aizoaceae, Sesuvioideae) in the Southern Cone

Abstract Sesuvium is a genus of 14 to 17 species of succulent plants, both annual and perennial, widely distributed in tropical and subtropical regions. The genus Sesuvium has not yet been studied in detail in the Southern Cone (Argentina, Southern Brazil, Chile, Paraguay and Uruguay), which has led to a misidentification of numerous specimens as S. portulacastrum. As part of the ongoing floristic, taxonomic and ecologic studies in Argentina, we revise the genus Sesuvium for the Southern Cone. This study is based on field investigation, examination of herbarium specimens, and revision of literature. The taxonomic treatments, maps of distribution, detailed descriptions, photographs, an illustration, a dichotomous key and a comparative table to differentiate the species of the genus Sesuvium occurring in the Southern Cone are presented. Finally, ecological, morphological, and taxonomic aspects of the species are discussed. The new combination of S. americanum (≡ Trianthema americanum Gillies ex Arn.; = S. verrucosum Raf.) is proposed. Lectotypes for three names are here designated (S. revolutifolium Vahl ex Willd.; S. revolutifolium Lam., and S. parviflorum DC.). Four species should be accepted for the Southern Cone: S. americanum, S. humifusum, S. mezianum and S. sessile. Furthermore, S. portulacastrum is excluded from the flora of the Southern Cone.

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On the identity of Sium frigidum (Apiaceae)

Phytotaxa ◽

10.11646/phytotaxa.288.3.7 ◽

2016 ◽

Vol 288 (3) ◽

pp. 265

Author(s):

LISONG WANG ◽

HONGRUI ZHANG ◽

MARK F. WATSON ◽

SANDRA KNAPP

Keyword(s):

Southwest China ◽

Detailed Examination ◽

Molecular Data ◽

Field Investigation ◽

New Combination ◽

Herbarium Specimens

Taxonomic identity of Sium frigidum remains confusing; the taxon has been treated as belonging to four different genera including Apium, Sium, Chamaesium and Sinocarum. After field investigation, detailed examination of herbarium specimens, and analyses of molecular data, the results show that S. frigidum represent plants only known from southwest China, and conspecific with Apium ventricosum. Therefore, a new combination name, Sium ventricosum, is proposed with full taxonomic treatments. Taxonomic confusing related with this species is also discussed.

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Identification aids for Cicer (Leguminosae, Cicereae) taxa

Edinburgh Journal of Botany ◽

10.1017/s0960428600002183 ◽

1998 ◽

Vol 55 (2) ◽

pp. 243-265 ◽

Cited By ~ 6

Author(s):

S. Coles ◽

N. Maxted ◽

L. J. G. van der Maesen

Keyword(s):

Herbarium Specimens ◽

Dichotomous Key

Identification aids for Cicer (Leguminosae, Cicereae) taxa are presented. A DELTA format dataset was generated for 42 Cicer taxa, on the basis of observation of 214 herbarium specimens and information obtained from the literature. Using the programs key, explore and confor, a dichotomous key, a tabular key, an interactive key and brief descriptions were produced and are presented.

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Two new species of Nullana from southern Brazil (Hemiptera: Cicadellidae: Gyponini) with key to males

Zootaxa ◽

10.11646/zootaxa.4281.1.19 ◽

2017 ◽

Vol 4281 (1) ◽

pp. 207

Author(s):

ALEXANDRE CRUZ DOMAHOVSKI ◽

RODNEY RAMIRO CAVICHIOLI

Keyword(s):

New Species ◽

The State ◽

New Combination ◽

Southern Brazil ◽

New Synonyms ◽

Two New Species

Two new species of Nullana DeLong, 1980 are described and illustrated: N. albinoi sp. nov. and N. sakakibarai sp. nov., both from the state of Paraná, Brazil. Two new synonyms and a new combination are proposed. A key to the 10 known species of Nullana are presented and Nullana gelbana is newly recorded from Paraná State, Brazil.

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A new combination in Cremanthodium (Asteraceae, Senecioneae) from Sichuan, China

Phytotaxa ◽

10.11646/phytotaxa.252.2.6 ◽

2016 ◽

Vol 252 (2) ◽

pp. 137 ◽

Cited By ~ 1

Author(s):

LONG WANG ◽

CHEN REN ◽

QIN-ER YANG

Keyword(s):

Type Material ◽

New Combination ◽

Critical Examination ◽

Herbarium Specimens

Critical examination of herbarium specimens (including type material) of Cremanthodium ellisii var. roseum (Asteraceae, Senecioneae) has shown that the variety should be transferred to C. brunneopilosum. We therefore propose a new combination, C. brunneopilosum var. roseum.

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Clarification of the confusing identity of Cremanthodium atrocapitatum (Asteraceae, Senecioneae), with a new combination and a new species in the genus

Phytotaxa ◽

10.11646/phytotaxa.288.1.1 ◽

2016 ◽

Vol 288 (1) ◽

pp. 1 ◽

Cited By ~ 1

Author(s):

LONG WANG ◽

CHEN REN ◽

QIN-ER YANG

Keyword(s):

New Species ◽

Type Material ◽

New Combination ◽

Herbarium Specimens ◽

Taxonomic Confusion ◽

A New Species

Cremanthodium atrocapitatum (Asteraceae, Senecioneae) has been previously largely misunderstood, resulting in considerable taxonomic confusion involving several taxa. Based on observations of both herbarium specimens (including type material) and living plants, here we clarify the taxonomic identity of this species. The Xizang (Tibet) plants previously referred to C. atrocapitatum are described as a new species, i.e. C. bomiense. Cremanthodium campanulatum var. brachytrichum is found to be very close to C. atrocapitatum rather than C. campanulatum, and is thus treated as C. atrocapitatum var. brachytrichum.

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An expanded circumscription for the previously monotypic Pleurospermopsis (Apiaceae) based on nrDNA ITS sequences and morphological evidence

Phytotaxa ◽

10.11646/phytotaxa.460.2.2 ◽

2020 ◽

Vol 460 (2) ◽

pp. 129-136

Author(s):

JING ZHOU ◽

JIN WEI ◽

ZHENWEN LIU

Keyword(s):

Taxonomic Revision ◽

Identification Key ◽

Its Sequences ◽

New Combination ◽

Morphological Evidence ◽

Herbarium Specimens ◽

Nrdna Its

Under the framework phylogeny of Apiaceae subfamily Apioideae and through a carefully examination of herbarium specimens, a taxonomic revision for Pleurospermopsis (a genus originally accepted as monotypic to include P. sikkimensis as the only representative), is presented. Its circumscription is expanded to comprise Pleurospermum bicolor (Franch.) Norman ex Pan & Watson. Therefore, a new combination of Pleurospermopsis bicolor (Franch.) J. Zhou & J. Wei is proposed with full taxonomic treatments. An identification key is also provided for the genus.

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Two decades of colonization of the urban environment of Porto Alegre, southern Brazil, by Drosophila paulistorum (Diptera, Drosophilidae)

Iheringia Série Zoologia ◽

10.1590/s0073-47212008000300007 ◽

2008 ◽

Vol 98 (3) ◽

pp. 329-338 ◽

Cited By ~ 12

Author(s):

Ana Cristina L. Garcia ◽

Victor Hugo Valiati ◽

Marco S. Gottschalk ◽

Cláudia Rohde ◽

Vera Lúcia da S. Valente

Keyword(s):

Native Species ◽

Global Climate ◽

Population Decline ◽

Climatic Changes ◽

Southern Brazil ◽

Porto Alegre ◽

Global Climate Warming ◽

Drosophila Paulistorum ◽

Ecologic Studies ◽

New Habitats

Drosophila paulistorum Dobzhansky & Pavan, 1949 had initially been considered absent in anthropogenically disturbed environments, but in 1985 the detection of the species in Porto Alegre city, southern Brazil, suggested its potential to colonize new habitats and laid the foundations for ecologic studies on this species' populations. This study followed the variations in D. paulistorum populations in this town almost 20 years after its first local record. Drosophilid specimens were collected in sites with different urbanization grades and the results point to the expressive decline in D. paulistorum populations in Porto Alegre. This decline may be linked to urban growth and to naturally driven population decline, as imputed to climatic changes like variations in maximum and minimum temperatures as a consequence of a global climate warming. Also, the recent introduction of exotic species Zaprionus indianus Gupta, 1970 seems to play a role in this scenario, changing the interactions between native species.

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Recognition of species groups ofNaupactusDejean (Coleoptera: Curculionidae) from Argentina and neighboring countries

PeerJ ◽

10.7717/peerj.6196 ◽

2019 ◽

Vol 6 ◽

pp. e6196 ◽

Cited By ~ 3

Author(s):

María G. del Río ◽

Analía A. Lanteri

Keyword(s):

Species Diversity ◽

New Combination ◽

Line Drawings ◽

Biogeographic Patterns ◽

Biogeographic Province ◽

Plant Associations ◽

Dichotomous Key ◽

Species Groups ◽

Misiones Province ◽

Northeastern Argentina

NaupactusDejean is the most diverse genus of the tribe Naupactini (Curculionidae: Entiminae), with more than 200 species occurring in South America, of which about 40 range in Argentina and neighboring countries. The Argentinean species treated herein were classified into nine groups having different biogeographic patterns: (1) the groups ofNaupactus xanthographus,N. delicatulusandN. auricinctusmainly occur in northeastern Argentina (Misiones province) and reach the highest species diversity in the Atlantic and Parana forests of Brazil; (2) the groups ofN. hirtellus,N. cinereidorsum,N. rivulosusandN. tarsalisshow the highest species diversity in the Chacoan biogeographic province and also occur in the Yungas, Espinal, Monte, Parana forest (Argentina) and Cerrado (Brazil); (3) the groups ofN. leucolomaandN. purpureoviolaceushave the highest species diversity in the Pampean biogeographic province, being also present in adjoining areas, mainly Chaco, Espinal, Monte and Parana forest. We provide descriptions, a dichotomous key, habitus photographs and line drawings of genitalia for the identification of the nine species groups, and a list of the Argentinean species from each group, together with their abbreviated synonymies, updated geographic distributions (including six new country records and several state/province records) and host plant associations. We discuss the characters that allow the separation of the species groups in a geographic distribution context, and provide information on species reassigned to genera other thanNaupactus;among these, we transferredN. cephalotes(Hustache) to the tribe Tanymecini, genusEurymetopellus, establishing the new combinationEurymetopellus cephalotes.

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Evolution of species diversity in the genus Chamaecostus (Costaceae): molecular phylogenetics and morphometric approaches

Phytotaxa ◽

10.11646/phytotaxa.204.4.3 ◽

2015 ◽

Vol 204 (4) ◽

pp. 265 ◽

Cited By ~ 3

Author(s):

Thiago Jose de Carvalho Andre ◽

CHELSEA SPECHT ◽

SHAYLA SALZMAN ◽

CLARISSE PALMA-SILVA ◽

TÂNIA WENDT

Keyword(s):

Molecular Phylogenetics ◽

Sequence Data ◽

Geographic Range ◽

New Combination ◽

Herbarium Specimens ◽

Geographic Proximity ◽

Morphometric Measurements ◽

Molecular Sequence Data ◽

Molecular Sequence ◽

Phylogenetic Lineages

While most species within the genus Chamaecostus (Costaceae) are well defined, the broad geographic range and long list of synonyms associated with Chamaecostus subsessilis led us to believe there may be some cryptic species within the complex. We thus investigate the phylogenetic relationships of species in the Chamaecostus lineage and specifically test the monophyly and diversity of the Chamaecostus subsessilis species complex from a population perspective by analyzing molecular sequence data and leaf morphometrics. We interpret evolutionary trends across the entire genus based on a molecular character-based phylogenetic hypothesis that includes all currently described species of Chamaecostus. Our results show that while Chamaecostus is strongly monophyletic, C. cuspidatus is found to be sister to a clade of some but not all samples of C. subsessilis, making it necessary to acknowledge more than one species in the C. subsessilis complex. Herbarium specimens of the C. subsessilis complex could be assigned based on geographic proximity to one of the major three clades recovered in the phylogenetic analysis. Leaf morphometric measurements were performed on each of these lineages and traits were tested to detect differences among phylogenetic lineages. We conclude by proposing the recognition of a new combination, Chamaecostus acaulis, which we describe.

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Synopsis of Schizanthus Ruiz & Pav. (Solanaceae), a genus endemic to the southern Andes

PhytoKeys ◽

10.3897/phytokeys.154.49615 ◽

2020 ◽

Vol 154 ◽

pp. 57-102

Author(s):

Vanezza Morales-Fierro ◽

Mélica Muñoz-Schick ◽

Andrés Moreira-Muñoz

Keyword(s):

New Taxa ◽

Atacama Desert ◽

New Combination ◽

Herbarium Specimens ◽

South American ◽

Habitat Distribution ◽

Type Specimens ◽

Private Protected Areas ◽

Infraspecific Taxa ◽

Key Characters

We present a taxonomic synopsis of the South American genus Schizanthus Ruiz & Pav. (Solanaceae), within which we recognise seventeen taxa (14 species with three infraspecific taxa). The genus is mainly distributed in Chile between the coast of the Atacama Desert and the southern temperate forests, while two species occur in the Argentinian Provinces of Mendoza and Neuquén. This taxonomic treatment is based on the analysis of herbarium specimens from 30 different herbaria. For each accepted species we provide details of type specimens and synonymy, key characters, habitat, distribution information and presence in public or private protected areas. We also incorporate a list of representative localities from examined material. We here described three new taxa: Schizanthus porrigens Graham ex Hook. subsp. borealis V.Morales & Muñoz-Schick, subsp. nov., Schizanthus carlomunozii V.Morales & Muñoz-Schick, sp. nov. and its variety Schizanthus carlomunozii var. dilutimaculatus V.Morales & Muñoz-Schick, var. nov., all of them from the coast of Coquimbo Region. We also recognise Schizanthus litoralis Phil. var. humilis (Lindl.) V.Morales & Muñoz-Schick, comb. nov., as a new combination.

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