scholarly journals Taxonomic position and identity of Stemodia scoparioides (Gratiolae, Plantaginaceae)

Phytotaxa ◽  
2013 ◽  
Vol 135 (1) ◽  
pp. 35 ◽  
Author(s):  
MARIA DE LAS MERCEDES SOSA ◽  
MASSIMILIANO DEMATTEIS
Keyword(s):  
Detailed Analysis ◽  
Geographic Distribution ◽  
Related Species ◽  
Pollen Grains ◽  
Morphological Features ◽  
Taxonomic Position ◽  
Type Material ◽  
Taxonomic Studies ◽  
Independent Species

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.

New taxonomic position of several Macrobiotus species  (Eutardigrada: Macrobiotidae)

Zootaxa ◽  
2007 ◽  
Vol 1471 (1) ◽  
pp. 61 ◽  
Author(s):  
ROBERTO GUIDETTI ◽  
ROBERTO BERTOLANI ◽  
PETER DEGMA
Keyword(s):  
Oral Cavity ◽  
Tube Wall ◽  
Systematic Position ◽  
Morphological Features ◽  
Taxonomic Position ◽  
Type Material ◽  
New Combinations ◽  
Main Character ◽  
Double Curvature ◽  
Pharyngeal Apparatus

The main character distinguishing Minibiotus from Macrobiotus is the presence of peribuccal papulae instead of lamellae. However, most Minibiotus species also share a set of characters of the bucco-pharyngeal apparatus. This set is defined by ten morphological features (the first seven common to all species, the last three to most of them): antero-ventral mouth (1), teeth in oral cavity absent or strongly reduced (2), a rigid and narrow buccal tube (3), buccal tube wall thickened below the point of insertion of stylet supports (4), stylet supports inserted at considerable distance from the posterior end of the buccal tube (5), short ventral lamina (6), short macroplacoid row length (7), a double curvature of the buccal tube (8), first macroplacoid situated very close to the pharyngeal apophysis (9) and three almost rounded macroplacoids (10). We examined the original descriptions and/or the type material of several species belonging to the genus Macrobiotus that seemed to present this set of characters. It was concluded that several species should be transferred from Macrobiotus to Minibiotus. The following new combinations are proposed: Minibiotus subintermedius (Ramazzotti, 1962) comb. n., Minibiotus pustulatus (Ramazzotti, 1959) comb. n., Minibiotus julietae (de Barros, 1942) comb. n., Minibiotus marcusi (de Barros, 1942) comb. n., Minibiotus granatai (Pardi, 1941) comb. n., Minibiotus allani (Murray, 1913) comb. n., Minibiotus crassidens (Murray, 1907) comb. n. and Minibiotus acontistus (de Barros, 1942) comb. n.. As a result of these new combinations, the genera Minibiotus and Macrobiotus appear to be more homogeneous, but their monophyly has not yet been demonstrated. Further data are necessary to better analyze the systematic position of Macrobiotus lazzaroi Maucci, 1986, Macrobiotus spertii Ramazzotti, 1957 and Macrobiotus striatus Mihelčič, 1949.

Taxonomic studies on selected Austral polypores

2003 ◽  
Vol 16 (4) ◽  
pp. 473 ◽  
Author(s):  
Mario Rajchenberg
Keyword(s):  
New Zealand ◽  
Cultural Studies ◽  
Northern Hemisphere ◽  
Trametes Versicolor ◽  
Mating Systems ◽  
Morphological Features ◽  
Taxonomic Position ◽  
New Combination ◽  
Taxonomic Studies

Cultural studies, mating systems and/or compatibility tests on six polypore species (Aphyllophorales, Basidiomycota) that decay standing and/or fallen trees in southern Argentina were performed in order to better understand their taxonomic position. Bondarzewia guaitecasensis formed sulphopositive gloeopleurous hyphae but did not form the Spiniger anamorph state typical of other species in the genus. Ceriporiopsis merulinus comb. nov. is proposed on the basis of morphological features of the basidiocarp (i.e. resupinate, brightly coloured, with metachromatic generative hyphae) and cultural characters. Porpomyces mucidus formed ampulliform septa in culture, a feature that supports its inclusion in that genus and not in Ceriporiopsis. Compatibility tests showed the isolation of Junghuhnia collabens var. meridionalis, described from southern Argentina, New Zealand and Australia, from J. collabens and J. nitida from the Northern Hemisphere; therefore, the new combination J.�meridionalis is proposed. Two incompatibility groups were found within Postia dissecta, one that is fully compatible with Tyromyces exiguus from New Zealand, and supports their synonymy, and another that is fully incompatible but morphologically indistinct. Four forms of Trametes versicolor described from Argentina and treated as distinct by some authors, were shown to be fully compatible and deserve subspecific treatment.

Reinstatement of Persicaria sinica Migo (Polygonaceae, Persicarieae)

Phytotaxa ◽  
2014 ◽  
Vol 161 (2) ◽  
pp. 148
Author(s):  
Bo Li
Keyword(s):  
Detailed Analysis ◽  
Geographic Distribution ◽  
Related Species ◽  
Leaf Blade ◽  
Distinct Species ◽  
Taxonomic Description

Persicaria sinica (≡ Polygonum sinicum) was considered as a synonym of Polygonum thunbergii (≡ Persicaria thunbergii), and its specimens were frequently identified as the latter, or occasionally as Polygonum dissitiflorum (≡ Persicaria dissitiflora). However, a detailed analysis of the type materials and additional specimens clearly indicates that P. sinica is a distinct species, which can be easily distinguished from P. thunbergii and P. dissitiflora, as well as other species of Persicaria section Echinocaulon (≡ Polygonum section Echinocaulon) by habit, the shape of the leaf blade, the apex of the ocreae, the structure of the inflorescences, the indumentum and color of the peduncles, and the shape and surface of the achenes. The specific status of P. sinica is thus reinstated. Additionally, complete taxonomic description, geographic distribution, ecological observations, and a key to distinguish the related species are also provided.

Reestablishment of Hymenaea travassii (Leguminosae, Caesalpinioideae), a species endemic to the Bolivian Chaco

Phytotaxa ◽  
2015 ◽  
Vol 219 (1) ◽  
pp. 96 ◽  
Author(s):  
Rafael Barbosa Pinto ◽  
Vidal De Freitas Mansano ◽  
Ana Maria Goulart de Azevedo Tozzi
Keyword(s):  
Detailed Analysis ◽  
Geographical Distribution ◽  
Related Species ◽  
Taxonomic Revision ◽  
Distinct Species ◽  
Species Description ◽  
Type Material ◽  
Shape And Size

In Lee & Langenheim’s taxonomic revision of the genus Hymenaea (Leguminosae, Caesalpinioideae), the species Hymenaea travassii was considered a species of dubious status.  A detailed analysis of the type material and additional specimens, clearly indicates, however, that this is a distinct species, endemic to the Bolivian “chaco”. The species can be distinguished by a combination of its habit, the texture of the bark and the shape and size of its leaflets. This study proposes the reestablishment of Hymenaea travassii as a distinct species, based on morphology. A species description, a key to distinguish Hymenaea travassii from related species, and a summary of its geographical distribution are presented, together with an illustration.

Redescriptions and species status of the South African mites Galumna lawrencei Jacot, 1940 and Galumna natalensis Jacot, 1940 (Acari, Oribatida, Galumnidae), with lectotype designation

Zootaxa ◽  
2019 ◽  
Vol 4568 (3) ◽  
pp. 581 ◽  
Author(s):  
SERGEY G. ERMILOV ◽  
ELIZABETH A. HUGO-COETZEE
Keyword(s):  
South Africa ◽  
South African ◽  
Morphological Traits ◽  
Type Material ◽  
The South ◽  
Mixed Species ◽  
Species Status ◽  
Independent Species

The main morphological traits of Galumna lawrencei Jacot, 1940 stat. nov. and Galumna natalensis Jacot, 1940 stat. nov. (Oribatida, Galumnidae) are presented based on the type material from South Africa. We consider that these species are not subspecies of Galumna maxima as was proposed originally by Jacot 1940, but independent species. A lectotype for G. lawrencei is designated, due to the mixed-species cotype series. 

scholarly journals Systematic importance of morphological features of pollen grains of species from Erica (Ericaceae) genus

PLoS ONE ◽  
2018 ◽  
Vol 13 (10) ◽  
pp. e0204557 ◽  
Author(s):  
Dorota Wrońska-Pilarek ◽  
Piotr Szkudlarz ◽  
Jan Bocianowski
Keyword(s):  
Pollen Grains ◽  
Morphological Features ◽  
Systematic Importance

scholarly journals An overview of recent taxonomic studies on Euphorbiaceae s.l. in Brazil

Rodriguésia ◽  
2012 ◽  
Vol 63 (1) ◽  
pp. 227-242 ◽  
Author(s):  
Ricardo de S. Secco ◽  
Inês Cordeiro ◽  
Luci de Senna-Vale ◽  
Margareth F. de Sales ◽  
Letícia Ribes de Lima ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Sensu Stricto ◽  
Classification Systems ◽  
Taxonomic Position ◽  
Diverse Families ◽  
Taxonomic Studies ◽  
The Tropics

The Euphorbiaceae sensu lato are distributed mainly in the tropics, in various types of vegetation and habitats, being one of the largest, most complex and diverse families of angiosperms. It has recently been divided into four families, according to classification systems based on molecular phylogeny: Euphorbiaceae sensu stricto, Phyllanthaceae, Putranjivaceae, and Picrodendraceae. There is a proposition to establish Peraceae still under discussion. There were also changes in the taxonomic position of genera widely distributed in the Brazilian territory, such as Amanoa, Drypetes, Pera, Phyllanthus, Podocalyx, Pogonophora, and Richeria, among others. In addition, new species have been proposed and the limits of taxa distribution are expanding in Brazil. Thus, the authors provide an overview of recent studies and advances in the taxonomy of Euphorbiaceae s.l. in the Northern, Northeastern, Southeastern and Southern regions of Brazil, concentrating on review works and regional floras, as well as the changes that resulted in setting a new taxonomic family.

scholarly journals Bromeliaceae and Orchidaceae on rocky outcrops in the Agreste Mesoregion of the Paraíba State, Brazil

Hoehnea ◽  
2015 ◽  
Vol 42 (2) ◽  
pp. 345-365 ◽  
Author(s):  
Thaynara de Sousa Silva ◽  
Leonardo Pessoa Felix ◽  
José Iranildo Miranda de Melo
Keyword(s):  
Atlantic Forest ◽  
Geographic Distribution ◽  
Distribution Data ◽  
Transition Area ◽  
Rocky Outcrops ◽  
Taxonomic Studies

ABSTRACT The present study consists of the floristics-taxonomic survey of Bromeliaceae and Orchidaceae on rocky outcrops located at an Atlantic Forest-Caatinga transition area in Paraíba State, northeast of Brazil, in order to provide data for the implementation of the biota conservation’s policies, especially of the flora associated to rocky environments of Paraíba State, given that the taxonomic studies focusing on such families in this state are still incipient. During the study, ten species in six genera of Bromeliaceae and six species in five genera of Orchidaceae were recorded. The treatment includes keys for recognition of the species of families, morphological descriptions, illustrations, geographic distribution data, and comments on the phenology of the species.

scholarly journals INDIVIDUAL VARIABILITY OF MORPHOLOGICAL FEATURES OF POLISH LARCH IN THE CONDITIONS OF INTRODUCTION

2020 ◽  
Vol 9 (4) ◽  
pp. 33-40
Author(s):  
Maksim Lavrenov ◽  
Sergey Vasil'ev ◽  
Vladimir Nikitin ◽  
Vera Savchenkova
Keyword(s):  
Siberian Larch ◽  
Taxonomic Status ◽  
Individual Variability ◽  
Morphological Features ◽  
European Larch ◽  
Average Value ◽  
European Part Of Russia ◽  
The Difference ◽  
Growing Conditions ◽  
Independent Species

Polish larch trees are among the most valuable among forest species both in natural growing conditions and in the conditions of introduction. However, its taxonomic status is not fully resolved due to the similarity in morphological features with European and Siberian larch. We conducted a comparative analysis of these species of larch on the morphological features of cones and needles. The studies were carried out in the conditions of introduction in the center of the European part of Russia. We present the average value of the trait (XSR ± Sx) and the degree of its variation (V %). The reliability of the difference between the samples according to these characteristics was determined based on the calculation of the student's criterion t. As a result, we found that the Polish larch has smaller cones and significantly differs from the European and Siberian larch in all studied features (length of cones, width of cones, number of scales in cones, length of needles). These results indicate the isolation of the Polish larch, but this pattern can be expressed not only when referring to the Polish larch in the rank of an independent species – Larix polonica Racib., but also as a subspecies of European larch (Larix decidua var. polonica (Racib. ex Wóycicki) Ostenf. & Syrach).

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