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Dirk C Albach - One of the best experts on this subject based on the ideXlab platform.
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Check-list of Veronica subg. Pseudolysimachium (Plantaginaceae) of Siberia Конспект вероник подрода Pseudolysimachium (Veronica, Plantaginaceae) Сибири
2020Co-Authors: Petr Kosachev, Dirk C Albach, A L EbelAbstract:Поступило в редакцию 28.04.2014 Submitted 28.04.2014 Принято к публикации 09.09.2015 Accepted 09.09.2015 Summary. Here, we present a critical check-list of Veronica subgenus Pseudolysimachium (W. D. J. Koch) Buchenau (Plantaginaceae Juss.) in Siberia, represented by 4 sections, 19 species and 4 subspecies. Two subsections of the subgenus (Pinnatae и Dauricae) are elevated to the taxonomic rank of a section. The Latin diagnosis for V. linariifolia var. baicalensis Boriss. is given, which has been previously described only in Russian.
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Evolution of Veronica (Plantaginaceae) on the Balkan Peninsula
2020Co-Authors: Dirk C AlbachAbstract:With more than 6500 species of native seed plants on the Balkans and almost a third of them endemic, the Balkan Peninsula is known to be a place for diversification and formation of new species and an important refugium during the Ice Ages. One plant group, which exemplifies this well, is the genus Veronica (Plantaginaceae, formerly Scrophulariaceae). Four groups from this genus (V. subg. Stenocarpon; V. subg. Chamaedrys; V. subg. Pseudolysimachium, V. alpina-complex) display putative tertiary relict species, speciation within Pleistocene refugia and Pleistocene or Holocene speciation by hybridization and polyploidization on the Balkan Peninsula. I here review earlier published results for these groups and present new data. DNA sequence analyses from the nuclear ribosomal DNA (ITS) and plastid genome (trnLF region) were examined so as to shed more light on the relationship of the species from the Balkans. In addition, AFLP fingerprints were used to study V. subg. Pseudolysimachium, which exhibits limited DNA sequence divergence. Results support the distinctiveness of taxa from the Balkans as a divergent group of plants on the intra- and interspecific level. Limited resolution and support of the results further demonstrate the need for another marker system to continue the study of evolution of these plants of the Balkan Peninsula.
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phylogenetic and morphometric analysis of plantago section coronopus Plantaginaceae
Taxon, 2019Co-Authors: Jannes Hopke, Ladislav Mucina, Dirk C AlbachAbstract:Plantago sect. Coronopus contains our two focal species (P. coronopus L., P. crassifolia Forssk.), both with an overall conspicuous bi‐hemispheric distribution range (Mediterranean and Middle Eastern regions in the Northern Hemisphere and South Africa in the Southern Hemisphere). We have evaluated up to 27 morphological characters from 96 herbarium specimens representing five out of seven species of that section that are currently recognised using principal coordinate analysis, linear discriminant analyses, agglomerative clustering, and classification tree analyses, in order to test the current taxonomic concepts of our two focal species. Furthermore, we used 54 individuals representing six out of those seven species of P. sect. Coronopus to construct molecular phylogenetic hypotheses by sequencing nuclear ribosomal DNA from the internal transcribed spacer region (ITS), the plastid trnL‐F region, the plastid intergenic spacer region trnH‐psbA and adopting maximum likelihood and Bayesian inference analyses. In the Northern Hemisphere, an Irano‐Arabian clade initially identified as P. coronopus and shown as distinct in both morphological and phylogenetical terms fits a wider circumscription of P. crypsoides Boiss. due to lack of the prominent short and thick inflorescence scape following Boissier's description. The morphological differences between P. crassifolia from the Mediterranean region and P. crassifolia from South Africa (often named P. carnosa Lam.) were marginal, yet the molecular phylogenetic analyses of both nuclear and plastid markers clearly separated these evolutionary entities. Therefore, we re‐instated the name P. carnosa as the correct name for South African P. crassifolia. Plantago carnosa differs from P. crassifolia by the combination of having stronger woody rootstocks, which are more often branched, by broader leaves (≥1.6 mm wide) and the fact that specimens more often turn brown when dried. Our dataset provides the best sampled phylogenetic hypothesis for P. sect. (and subg.) Coronopus to date, and reveals discordance between nuclear and plastid genealogies within P. sect. Maritima, which requires further investigation.
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iridoid glucosides in the genus veronica Plantaginaceae from new zealand
Phytochemistry, 2017Co-Authors: Phillip Krollmoller, Dirk C Albach, Charlotte Held Gotfredsen, Katja Desiree Pedersen, Chrysoula Gousiadou, Tetsuo Kokubun, Rilka M Taskova, P J Garnockjones, Soren Rosendal JensenAbstract:Abstract Four simple iridoid glucosides, three known esters of catalpol, seven esters of aucubin, and two phenylethanoids were isolated from Veronica hookeri (syn. Hebe ciliolata ; Plantaginaceae). Of these, none of four aromatic ( p -methoxybenzoyl, isovanilloyl, veratroyl, caffeoyl) 6- O -esters of aucubin and 6″- O -benzoyl mussaenosidic acid, had been reported from nature before. Similarly, three simple iridoid glucosides, two esters of 6- O -rhamnopyranosylcatapol, and two phenylethanoid glucosides, as well as 1- O -benzoyl-3-α-glucuronosylglycerol, and 1- O -β-benzoyl rutinoside were isolated from Veronica pinguifolia (syn. Hebe pinguifolia ). The compound 3″- O -benzoyl-2″- O -caffeoyl 6- O -rhamnopyranosylcatalpol had not been reported previously. The pattern of the structural features of the iridoid glucosides is overlaid onto the latest molecular phylogenetic framework of Veronica sects. Hebe and Labiatoides , and discussed in the context of evolutionary trends.
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Transcriptomic resources and marker validation for diploid and polyploid Veronica (Plantaginaceae) from New Zealand and Europe.
Applications in Plant Sciences, 2016Co-Authors: Eike Mayland-quellhorst, Heidi M Meudt, Dirk C AlbachAbstract:Premise of the study: Polyploidy may generate novel variation, leading to adaptation and species diversification. An excellent natural system to study polyploid evolution in a comparative framework is Veronica (Plantaginaceae), which comprises several parallel, recently evolved polyploid series. Methods: Over 105 million Illumina paired-end sequence reads were generated from cDNA libraries of leaf tissue from eight individuals representing three European and four New Zealand species. Forty-eight simple sequence repeat (SSR) and 48 low-copy nuclear (LCN) markers were developed and validated with Fluidigm microfluidic PCR and Illumina MiSeq amplicon sequencing on 48 different individuals each. Results: Individual Trinity assemblies were similar regarding annotated transcripts (13,009–14,271), mean contig length (635–742 bp), N50 value (916–1133 bp), E90N50 value (1099–1308 bp), contigs with positive BLAST hits (42–63%), and gene ontology terms. Analyses of 29,738 single-nucleotide polymorphisms (8746 phylog...
Heidi M Meudt - One of the best experts on this subject based on the ideXlab platform.
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ancestral range reconstruction of remote oceanic island species of plantago Plantaginaceae reveals differing scales and modes of dispersal
Journal of Biogeography, 2019Co-Authors: Iwanycki N Ahlstrand, Heidi M Meudt, Gustavo Hassemer, Brecht Verstraete, S Dunbarco, R Hoggard, Nina RonstedAbstract:Aim: The aim of this study was to resolve the phylogenetic placement of island taxa, reconstruct ancestral origins and resolve competing hypotheses of dispersal patterns and biogeographical histories for oceanic island endemic taxa within subgenus Plantago (Plantaginaceae). Location: Juan Fernandez Islands, the Auckland Islands, Lord Howe Island, New Amsterdam Island, New Zealand, Tasmania, Falkland Islands, Rapa Iti and the Hawaiian Islands. Taxon: Island endemics within Plantago (Plantaginaceae), a globally distributed taxonomic group comprising approximately 250 species. Methods: We use Bayesian phylogenetic and divergence time analyses and historical biogeographical analysis of molecular sequence data to infer the ancestral origins of the oceanic island species in Plantago. Results: Taxa within subgenus Plantago form clades based on geographic proximities and challenge previous phylogenetic relationships and classification based on morphology. We infer that biogeographic histories of oceanic island taxa from multiple islands were shaped by dispersal at different scales and possibly by different types of birds. The highly remote Hawaiian Islands and Rapa Iti were colonized from North American taxa in a pattern corresponding to known migration routes of large marine birds, rather than from New Zealand as previously hypothesized. The island endemics of Juan Fernandez, the Falkland Islands, Lord Howe, Auckland Islands and New Zealand are found to have sources in the nearest continental areas. The analyses confirm recent speciation within subgenus Plantago - which is particularly heightened in island lineages in Hawaii and Rapa Iti - but show slightly older divergence times than previous molecular dating studies. Main conclusions: Using molecular data to infer ancestral ranges for plants with uncertain taxonomic relationships can greatly improve our understanding of biogeographical histories and help elucidate origins, dispersal modes and routes in widespread lineages with complex distribution patterns such as Plantago. We improve understanding of important floristic exchange areas between continents and islands as a result of long-distance dispersal. We infer that a combination of both stepping stone dispersal and extreme long-distance dispersal can shape insular floras, and that multiple floristic areas can be the sources of closely related island taxa. However, despite the successful dispersal of Plantago, radiation in island archipelagos is generally limited suggesting specific traits may limit diversification.
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Transcriptomic resources and marker validation for diploid and polyploid Veronica (Plantaginaceae) from New Zealand and Europe.
Applications in Plant Sciences, 2016Co-Authors: Eike Mayland-quellhorst, Heidi M Meudt, Dirk C AlbachAbstract:Premise of the study: Polyploidy may generate novel variation, leading to adaptation and species diversification. An excellent natural system to study polyploid evolution in a comparative framework is Veronica (Plantaginaceae), which comprises several parallel, recently evolved polyploid series. Methods: Over 105 million Illumina paired-end sequence reads were generated from cDNA libraries of leaf tissue from eight individuals representing three European and four New Zealand species. Forty-eight simple sequence repeat (SSR) and 48 low-copy nuclear (LCN) markers were developed and validated with Fluidigm microfluidic PCR and Illumina MiSeq amplicon sequencing on 48 different individuals each. Results: Individual Trinity assemblies were similar regarding annotated transcripts (13,009–14,271), mean contig length (635–742 bp), N50 value (916–1133 bp), E90N50 value (1099–1308 bp), contigs with positive BLAST hits (42–63%), and gene ontology terms. Analyses of 29,738 single-nucleotide polymorphisms (8746 phylog...
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taxonomic novelties in plantago section virginica Plantaginaceae and an updated identification key
Phytotaxa, 2015Co-Authors: Gustavo Hassemer, Heidi M Meudt, Rafael Trevisan, Nina RonstedAbstract:This study raises two rather poorly understood subspecies to the rank of species, and revalidates two subspecies in Plantago (Plantaginaceae) section Virginica . Plantago napiformis , formerly P. tomentosa subsp. napiformis , is an uncommon species from grasslands in northeastern Argentina, southern Paraguay and southern Brazil. Plantago pretoana , formerly P. australis subsp. pretoana , is a rare species, endemic to high-elevation bogs in two small areas in southern Brazil: Serra do Itatiaia, and around Lagoa Dourada. Plantago australis subsp. angustifolia and P. australis subsp. hirtella have been recently synonymised under P. australis subsp. australis , but we present evidence here for the revalidation of these two subspecies. We also revise the distribution of P. australis subsp. angustifolia , greatly reducing it, and expand the distribution of P. australis subsp. australis . Finally, we provide an updated identification key to all 22 Plantago species and subspecies in Brazil, Paraguay, Uruguay and northeastern Argentina.
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a taxonomic revision of native new zealand plantago Plantaginaceae
New Zealand Journal of Botany, 2012Co-Authors: Heidi M MeudtAbstract:Species delimitation is challenging in New Zealand Plantago because of a complex polyploid evolutionary history, few taxonomically useful characters due to reduced habit and wind-pollinated flowers, and phenotypic plasticity. To clarify species limits and revise the taxonomy of this group, analyses of novel morphological data were undertaken and evaluated alongside previously published studies of chromosome number, amplified fragment length polymorphisms, molecular phylogenetics, molecular cytogenetics and morphology. All 11 native species of Plantago recognised here are endemic to New Zealand, except Plantago triantha which is also native to Tasmania, Australia. In contrast to previous treatments, Plantago picta is recognised here at the species rank, Plantago masoniae is treated as a synonym of Plantago triandra, and one new 16-ploid species, Plantago udicola Meudt & Garn.-Jones, is formally described. Seed number and shape, scape, bract and sepal vestiture, and number of flowers and spikes are particul...
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amplified fragment length polymorphism data reveal a history of auto and allopolyploidy in new zealand endemic species of plantago Plantaginaceae new perspectives on a taxonomically challenging group
International Journal of Plant Sciences, 2011Co-Authors: Heidi M MeudtAbstract:Abstract Amplified fragment length polymorphism (AFLP) data were generated for most of the ∼12 species and subspecies of endemic New Zealand Plantago (Plantaginaceae) to test species boundaries and interpret polyploid origins. Phylogenetic, network, principal-coordinates, structure, and quantitative analyses of the AFLP data were generally congruent and complementary regarding the main lineages, and the incongruences allowed some inferences of alloploidy and hybridization. Within the largely diploid group III, P. novae-zelandiae, P. lanigera, P. obconica, and P. aucklandica were genetically distinct. Within group II, there was little genetic differentiation between octoploids P. masoniae and P. triandra, and multiple alloploid origins were inferred for decaploid and dodecaploid cytotypes of P. unibracteata. Within group I, the 16-ploid P. sp. “Sylvester” is suggested to be an autoploid of octoploid P. raoulii, octoploid P. picta is clearly a genetically distinct entity, and species boundaries of octoploid...
Soren Rosendal Jensen - One of the best experts on this subject based on the ideXlab platform.
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iridoid glucosides in the genus veronica Plantaginaceae from new zealand
Phytochemistry, 2017Co-Authors: Phillip Krollmoller, Dirk C Albach, Charlotte Held Gotfredsen, Katja Desiree Pedersen, Chrysoula Gousiadou, Tetsuo Kokubun, Rilka M Taskova, P J Garnockjones, Soren Rosendal JensenAbstract:Abstract Four simple iridoid glucosides, three known esters of catalpol, seven esters of aucubin, and two phenylethanoids were isolated from Veronica hookeri (syn. Hebe ciliolata ; Plantaginaceae). Of these, none of four aromatic ( p -methoxybenzoyl, isovanilloyl, veratroyl, caffeoyl) 6- O -esters of aucubin and 6″- O -benzoyl mussaenosidic acid, had been reported from nature before. Similarly, three simple iridoid glucosides, two esters of 6- O -rhamnopyranosylcatapol, and two phenylethanoid glucosides, as well as 1- O -benzoyl-3-α-glucuronosylglycerol, and 1- O -β-benzoyl rutinoside were isolated from Veronica pinguifolia (syn. Hebe pinguifolia ). The compound 3″- O -benzoyl-2″- O -caffeoyl 6- O -rhamnopyranosylcatalpol had not been reported previously. The pattern of the structural features of the iridoid glucosides is overlaid onto the latest molecular phylogenetic framework of Veronica sects. Hebe and Labiatoides , and discussed in the context of evolutionary trends.
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chemotaxonomy of veroniceae and its allies in the Plantaginaceae
Phytochemistry, 2006Co-Authors: Rilka Mladenova Taskova, Charlotte Held Gotfredsen, Soren Rosendal JensenAbstract:Abstract In a chemosystematic investigation of tribe Veroniceae (Plantaginaceae), representatives of Camptoloma, Sibthorpia, Veronica subg. Pentasepalae and subg. Hebe, Veronicastrum, Wulfenia, and the related Ellisiophyllum and Globularia were examined for non-flavonoid glycosides. From the 14 species studied, 28 different iridoid glucosides and 10 caffeoyl phenylethanoid glucosides (CPGs), as well as salidroside and arbutin were isolated and characterized by NMR; of these, five compounds were previously unknown. It was found that the representatives of Veroniceae, as well as Globularia, were characterized by mannitol, aucubin, catalpol and catalpol esters. Each of the three studied species of Veronica subg. Hebe contained at least one of the 6-O-catalpol esters typical for Veronica s. str. (verminoside), supporting the inclusion of Hebe in Veronica. However, their main constituents were esters of 6-O-rhamnopyranosylcatalpol; a CPG, hebeoside (2′-β-xylopyranosyl-verbascoside) was isolated from V. (Hebe) salicifolia. The two species of Veronicastrum also contained 6-O-rhamnopyranosylcatalpol esters, including the previously unknown 2″,3″- and 3″,4″-dicinnamoyl derivatives and, in contrast to the earlier reports, they lacked 6-O-catalpol esters. The main iridoid constituents in the three investigated species of Wulfenia were 10-O-aucubin and 10-O-catalpol esters (isoscrophularioside or globularin) while baldaccioside (10-O-cinnamoyl asystasioside E) was isolated from W. baldaccii. Globularia vulgaris contained 10-O-catalpol esters (e.g., globularin) and, in addition, asperuloside together with its benzoyl analogue named besperuloside. The representatives of Sibthorpia and Ellisiophyllum were almost completely devoid of iridoids; this, however, together with the CPGs present implied a close relationship between the two genera. Camptoloma lyperiiflorum lacked hexitols but contained esters of 6-O-rhamnopyranosylcatalpol different from those found in Veroniceae but known from Buddleja, Scrophularia and Verbascum (Scrophulariaceae s. str.).
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chemotaxonomic markers in digitalideae Plantaginaceae
Phytochemistry, 2005Co-Authors: Rilka Mladenova Taskova, Charlotte Held Gotfredsen, Soren Rosendal JensenAbstract:Abstract In a chemosystematic investigation of Digitalideae (Plantaginaceae), the water-soluble part of extracts of two species of Digitalis , two species of Isoplexis , as well as Erinus alpinus and Lafuentea rotundifolia were studied with regard to their content of main carbohydrates, iridoids and caffeoyl phenylethanoid glycosides (CPGs). Digitalis and Isoplexis contained sorbitol, cornoside and a number of other phenylethanoid glycosides including the new tyrosol β- d -mannopyranoside, sceptroside but were found to lack iridoid glucosides. Erinus contained mainly glucose, the new 8,9-double bond iridoid, erinoside, and a number of known iridoid glucosides including two esters of 6-rhamnopyranosylcatalpol, as well as the CPG poliumoside. Finally, Lafuentea was characterized by the presence of glucose, aucubin and cryptamygin B but apparently lacked CPGs. The chemosystematic significance of the isolated compounds is discussed.
María De Las Mercedes Sosa - One of the best experts on this subject based on the ideXlab platform.
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Stemodia diplohyptoides (Plantaginaceae, Gratiolae): a new diploid species from
2020Co-Authors: María De Las Mercedes Sosa, Massimiliano DematteisAbstract:Stemodia diplohyptoides (Plantaginaceae), a new species from Gratiolae tribe is described and illustrated. This taxon is found in northeastern Argentina, at the edge of the Parana River that surrounds the north and center of Misiones province (Argentina). It is a diploid that has been traditionally treated under Stemodia hyptoides, which is here re-circumscribed to include only autopolyploid plants (tetraploid and hexaploid). The diploid specimens may be distinguished from the polyploid S. hyptoides by several morphological features such as shape, pubescence and margin of the leaves, corolla length and corolla tube pubescence. In addition, scanning electron microphotographs of seeds, chromosomes numbers, a distribution map and a key to distinguish the related species are also provided. On the basis of morphological, cytological and geographical data, some evolutionary considerations are inferred.
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The identity of Stemodia lanceolata (Plantaginaceae) and its occurrence in Brazil
Phytotaxa, 2018Co-Authors: André Vito Scatigna, Vinicius Castro Souza, María De Las Mercedes Sosa, André Olmos SimõesAbstract:In this contribution, we reassess the identity of Stemodia lanceolata (Plantaginaceae) and confirm its occurrence in Brazilian territory. We present a detailed and updated description, a fine illustration, and photographs of this species, along with comments on its distribution, habitat and phenology, and notes on taxonomic affinities. Stemodia lanceolata is characterized by its stiffy erect terminal inflorescence with filamentous aspect due to the long, linear-triangular, frequently out-curved floral bracts. Finally, we propose second-step lectotypifications for three names subordinated to S. lanceolata .
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Stemodia diplohyptoides (Plantaginaceae, Gratiolae): a new diploid species from South America
Phytotaxa, 2014Co-Authors: María De Las Mercedes Sosa, Massimiliano DematteisAbstract:Stemodia diplohyptoides (Plantaginaceae), a new species from Gratiolae tribe is described and illustrated. This taxon is found in northeastern Argentina, at the edge of the Parana River that surrounds the north and center of Misiones province (Argentina). It is a diploid that has been traditionally treated under Stemodia hyptoides , which is here re-circumscribed to include only autopolyploid plants (tetraploid and hexaploid). The diploid specimens may be distinguished from the polyploid S. hyptoides by several morphological features such as shape, pubescence and margin of the leaves, corolla length and corolla tube pubescence. In addition, scanning electron microphotographs of seeds, chromosomes numbers, a distribution map and a key to distinguish the related species are also provided. On the basis of morphological, cytological and geographical data, some evolutionary considerations are inferred.
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Taxonomic position and identity of Stemodia scoparioides (Gratiolae, Plantaginaceae)
Phytotaxa, 2013Co-Authors: María De Las Mercedes Sosa, Massimiliano DematteisAbstract:In recent floristic and taxonomic studies, Stemodia scoparioides (Gratiolae, Plantaginaceae) has been considered a synonym of S. lanceolata or a synonym of S. stricta. However, a detailed analysis of the type material and additional specimens clearly indicates that this is a different species, which can be distinguished by the aspect of the plants, the size of the leaves, the shape of the blades, and the length of the corollas. Consequently, in this contribution Stemodia scoparioides is resurrected from the synonymy as an independent species based on the analysis of morphological features. Additionally, complete description (including the pollen grains), geographic distribution, ecological observations, and a key to distinguish the related species are also reported, together with an illustration of S. scoparioides.
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Pollen morphology of eight species of Stemodia (Plantaginaceae) from South America
Palynology, 2012Co-Authors: María De Las Mercedes Sosa, Andrea F. Panseri, Cristina R. SalgadoAbstract:The pollen morphology of eight species of Stemodia L. (Plantaginaceae) was analysed with the aim of refining the taxonomy of this genus. The pollen grains were examined with both light and scanning electron microscopes. The pollen grains are spheroidal, sometimes prolate-spheroidal, small, with a subcircular or subtriangular amb, 3- or 4-colporate and with a long colpus that reaches the poles, defining a small, circular to slightly lalongate apocolpium with irregular margins. The exine is tectate, foveolate or microperforate, 1 µm thick and uniform. The species of Stemodia analysed here exhibit morphological homogeneity, which suggests that the genus is stenopalynous.
Massimiliano Dematteis - One of the best experts on this subject based on the ideXlab platform.
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Stemodia diplohyptoides (Plantaginaceae, Gratiolae): a new diploid species from
2020Co-Authors: María De Las Mercedes Sosa, Massimiliano DematteisAbstract:Stemodia diplohyptoides (Plantaginaceae), a new species from Gratiolae tribe is described and illustrated. This taxon is found in northeastern Argentina, at the edge of the Parana River that surrounds the north and center of Misiones province (Argentina). It is a diploid that has been traditionally treated under Stemodia hyptoides, which is here re-circumscribed to include only autopolyploid plants (tetraploid and hexaploid). The diploid specimens may be distinguished from the polyploid S. hyptoides by several morphological features such as shape, pubescence and margin of the leaves, corolla length and corolla tube pubescence. In addition, scanning electron microphotographs of seeds, chromosomes numbers, a distribution map and a key to distinguish the related species are also provided. On the basis of morphological, cytological and geographical data, some evolutionary considerations are inferred.
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Stemodia diplohyptoides (Plantaginaceae, Gratiolae): a new diploid species from South America
Phytotaxa, 2014Co-Authors: María De Las Mercedes Sosa, Massimiliano DematteisAbstract:Stemodia diplohyptoides (Plantaginaceae), a new species from Gratiolae tribe is described and illustrated. This taxon is found in northeastern Argentina, at the edge of the Parana River that surrounds the north and center of Misiones province (Argentina). It is a diploid that has been traditionally treated under Stemodia hyptoides , which is here re-circumscribed to include only autopolyploid plants (tetraploid and hexaploid). The diploid specimens may be distinguished from the polyploid S. hyptoides by several morphological features such as shape, pubescence and margin of the leaves, corolla length and corolla tube pubescence. In addition, scanning electron microphotographs of seeds, chromosomes numbers, a distribution map and a key to distinguish the related species are also provided. On the basis of morphological, cytological and geographical data, some evolutionary considerations are inferred.
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Taxonomic position and identity of Stemodia scoparioides (Gratiolae, Plantaginaceae)
Phytotaxa, 2013Co-Authors: María De Las Mercedes Sosa, Massimiliano DematteisAbstract:In recent floristic and taxonomic studies, Stemodia scoparioides (Gratiolae, Plantaginaceae) has been considered a synonym of S. lanceolata or a synonym of S. stricta. However, a detailed analysis of the type material and additional specimens clearly indicates that this is a different species, which can be distinguished by the aspect of the plants, the size of the leaves, the shape of the blades, and the length of the corollas. Consequently, in this contribution Stemodia scoparioides is resurrected from the synonymy as an independent species based on the analysis of morphological features. Additionally, complete description (including the pollen grains), geographic distribution, ecological observations, and a key to distinguish the related species are also reported, together with an illustration of S. scoparioides.
