A taxonomic monograph of Myrcia sect. Sympodiomyrcia (Myrteae, Myrtaceae)

Phytotaxa ◽  
2018 ◽  
Vol 380 (1) ◽  
pp. 1 ◽  
Author(s):  
MATHEUS F. SANTOS ◽  
EVE LUCAS ◽  
PAULO T. SANO
Keyword(s):  
Atlantic Forest ◽  
Conservation Status ◽  
Morphological Characterization ◽  
Identification Key ◽  
Guiana Shield ◽  
Taxonomic Treatment ◽  
Taxonomic History ◽  
Central Eastern ◽  
Morphological Differences

Myrcia contains nearly 800 species and is divided into nine sections, one of them, Myrcia sect. Sympodiomyrcia, has recently been recognized and formally described. This study presents a taxonomic monograph of the group and revises its literature and taxonomic history. Myrcia sect. Sympodiomyrcia is mainly characterized by the presence of cataphylls at the base of internodes, sympodial branching at the base of inflorescences and free and deciduous calyx lobes. Myrcia sect. Sympodiomyrcia is distributed between the Guiana Shield and the central-eastern portion of Brazil (Atlantic Forest and Cerrado Domains). Morphological characterization of organs and structures is provided, as well as distribution statements, morphological differences with other sections of Myrcia and an identification key. A full taxonomic treatment as well as conservation status and images of representative specimens of each species are provided. Twenty one species are here accepted in Myrcia sect. Sympodiomyrcia: Myrcia ascendens, M. attenuata, M. bicarinata, M. bicolor, M. cataphyllata, M. costeira, M. densa, M. foveolata, M. insigniflora, M. lenheirensis, M. mucugensis, M. mutabilis, M. nitida, M. plusiantha, M. rupestris, M. subavenia, M. subcordata, M. subterminalis, M. summa, M. tenuifolia and M. truncata.

Stryphnodendron flavotomentosum (Leguminosae, Caesalpinioideae, mimosoid clade), a New Species from the Atlantic Forest, Brazil

2021 ◽  
Vol 46 (1) ◽  
pp. 70-74
Author(s):  
Alexandre Gibau de Lima ◽  
Juliana de Paula-Souza ◽  
Viviane Renata Scalon ◽  
Vinicius Castro Souza
Keyword(s):  
New Species ◽  
Endangered Species ◽  
Atlantic Forest ◽  
Conservation Status ◽  
Identification Key ◽  
Critically Endangered ◽  
Taxonomic Treatment ◽  
Critically Endangered Species ◽  
Brazilian Flora ◽  
A New Species

Abstract—During a taxonomic treatment of Stryphnodendron (Leguminosae, Caesalpinioideae, mimosoid clade) for the Brazilian Flora 2020 Project, one new presumably critically endangered species from the Atlantic Forest domain was found, and is so far only known to western Espírito Santo state. Stryphnodendron flavotomentosum is described and illustrated, and information on its distribution, habitat, phenology, and preliminary conservation status is provided. Additionally, an identification key for the species of Stryphnodendron from the Brazilian rainforests is presented.

Revision of the Metallactus kollari species-group with a new diagnosis of the genus (Coleoptera: Chrysomelidae: Cryptocephalinae)

Zootaxa ◽  
2018 ◽  
Vol 4413 (1) ◽  
pp. 57
Author(s):  
DAVIDE SASSI
Keyword(s):  
Type Species ◽  
Species Group ◽  
Identification Key ◽  
Original Diagnosis ◽  
Taxonomic Treatment ◽  
Species Groups ◽  
New Diagnosis ◽  
Good Resource

The genus Metallactus has been controversial since its introduction due to the ambiguous nature of the original diagnosis. This has caused some confusion in the taxonomy of Neotropical Pachybrachina. In this work the morphology of endophallus, which is useful for the characterization of species groups in several groups of Coleoptera, including Cryptocephalinae, has been analyzed. This has proven to be a good resource also in the taxonomic treatment of the species belonging to the genus Metallactus. After a careful survey on most of the species described so far, the endophallus shape in Metallactus turned out to be remarkably distinctive and very promising in the delimitation of species groups. The present work includes: a) a new diagnosis of the genus Metallactus on the basis of the aedeagal anatomy; b) the designation of the type species of the nominal genus; c) the revision of a first species-group of the genus, including the type species, hereinafter called Metallactus kollari species-group. Before this revision, catalogues had been reporting 13 species attributable to this group, in the present work three species have been synonymized and seven have been described as new to science. Therefore, the group includes 17 species. The species described as new are: Metallactus rileyi n. sp., M. bellatrix n. sp., M. longicornis n. sp.; M. londonpridei n. sp., M. regalini n. sp., M. bezoar n. sp., M. guarani n. sp. The new synonymies are as follows: Metallactus albipes Suffrian, 1866 (= M. nigrofasciatus Suffrian, 1866 n. syn.), M. albifrons Suffrian, 1866 (= M. flavofrontalis Jacoby, 1907 n. syn.), M. dodecastictus Suffrian, 1866 (= Griburius nigritarsis Jacoby, 1907 n. syn.). The lectotypes of all previously described species have been designated. The new synonymies, the name-bearing type fixations and designations and the nomenclatural acts have been critically discussed. An identification key for the species-group is also provided. 

Between- and within-breed morphological variability in Moroccan sheep breeds

2016 ◽  
Vol 58 ◽  
pp. 91-100 ◽  
Author(s):  
I. Boujenane ◽  
D. Petit
Keyword(s):  
Multivariate Analyses ◽  
Morphological Variability ◽  
Tail Length ◽  
Morphological Characterization ◽  
Total Variance ◽  
High Association ◽  
Sheep Breeds ◽  
Selection Strategies ◽  
Morphological Differences

SummaryThe objective of this study was a morphological characterization of five Moroccan sheep breeds (Béni Guil, Boujaâd, D'man, Sardi and Timahdite) to assess between- and within-breed variability using multivariate analyses. Fourteen morphological measurements were collected on 876 adult animals of both sexes in 98 different flocks located in 22 geographic localities of five breeds. The multiple analysis of variance revealed that significant morphological differences existed between breeds. The overall proportion of total variance due to between-breed component was 28.3 percent. The factor analysis revealed three factors accounting for 50.1, 11.8 and 7.54 percent of total variance. The first factor had high loadings for variables relating to body size, whilst the second factor had high association with traits reflecting tail length and ear size. The third factor had high loadings for wool trait. The squared Mahalanobis distance between the five sheep breeds were highly significant (P< 0.001). The largest morphological divergence was shown between Béni Guil and Sardi breeds (23.5) and the smallest one was between Boujaâd and Sardi breeds (3.54). The discriminant functions clearly discriminated and assigned 94.4 percent of Béni Guil, 79.7 of Boujaâd, 88.5 percent of D'man, 86.7 of Sardi and 80.1 percent of Timahdite sheep into their breed of origin. Overall morphological differences observed within-breeds were due for 18.1 percent to geographic locality and for 20.7 percent to flock management. It was concluded that the information reported in this study will be the basis for the establishment of characterization and selection strategies for Moroccan sheep.

A new species of Calea (Neurolaeneae, Asteraceae) from the Atlantic Forest, Minas Gerais, southeastern Brazil

Phytotaxa ◽  
2021 ◽  
Vol 494 (1) ◽  
pp. 129-136
Author(s):  
GENILSON ALVES DOS REIS E SILVA ◽  
JIMI NAOKI NAKAJIMA
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Conservation Status ◽  
Minas Gerais ◽  
The State ◽  
Identification Key ◽  
Southeastern Brazil ◽  
Distribution Map ◽  
A New Species

A new species, Calea arachnoidea, which belongs to Calea sect. Meyeria, is hereby described and illustrated. This species occurs in the Serra Negra region, located in the southern portion of the “Zona da Mata” in the state of Minas Gerais, southeastern Brazil. Calea arachnoidea resembles C. quadrifolia, C. heteropappa and C. semirii, and its relationships with these species are discussed and an identification key for the species of C. sect. Meyeria in the state of Minas Gerais is provided. Additionally, photographs, a distribution map, comments about habitat and conservation status are provided.

Synopsis of Pentacalia (Compositae: Senecioneae) in Brazil

Rodriguésia ◽  
2021 ◽  
Vol 72 ◽  
Author(s):  
Aristônio Magalhães Teles ◽  
Geovana Vieira da Fonseca ◽  
Lidyanne Yuriko Saleme Aona
Keyword(s):  
Atlantic Forest ◽  
New Record ◽  
Identification Key ◽  
Northeast Region ◽  
Taxonomic Treatment ◽  
The Andes ◽  
Ray Florets

Abstract The genus Pentacalia belongs to the tribe Senecioneae. It is represented by approximately 160 species predominantly distributed in the Andes. Species of Pentacalia are characterized by having a scandent habit, usually alternate leaves, axillary or terminal capitulescence, homogamous or heterogamous capitula, commonly yellow ray-florets, yellowish, creamy, or whitish disc-florets, sagittate to caudate anther-bases, and cypselae with five to ten ribs. The aim of the present study was to perform a taxonomic treatment of Pentacalia in Brazil, where it is represented by two species, P. desiderabilis and P. tropicalis, from the Atlantic Forest Domain. Detailed descriptions, taxonomic discussions, geographical distributions, an identification key, illustrations and a new record of P. tropicalis for the Northeast Region are presented. Moreover, three names (Senecio desiderabilis, S. ellipticus, and S. tropicalis) are lectotypified.

Diversity of Convolvulaceae from Meruoca Massif, Ceará, Brazil

Rodriguésia ◽  
2021 ◽  
Vol 72 ◽  
Author(s):  
Diego Santos ◽  
Marlene Feliciano Figueiredo ◽  
Maria Teresa Buril ◽  
Elnatan Bezerra de Souza
Keyword(s):  
Atlantic Forest ◽  
Geographic Distribution ◽  
Morphological Analysis ◽  
Deciduous Forest ◽  
The State ◽  
Identification Key ◽  
Dry Forest ◽  
Diagnostic Characters ◽  
Taxonomic Treatment ◽  
Northwest Region

Abstract We present the taxonomic treatment of Convolvulaceae for the Meruoca Massif, located in the Northwest region of the Ceará state, where there are remnants of Tropical Pluvial Sub-deciduous Forest (Dry Forest) and Tropical Pluvial-Nebular Rainforest (Wet Forest). The present study was based on the morphological analysis of specimens collected in the field and from the collections EAC, HUEFS, HUVA, PEUFR, and SPF. We recorded 24 species distributed in four genera: Ipomoea (18 species), Jacquemontia (three species), Distimake (two species), and Camonea (one species). We report the first records of I. cearensis for Atlantic Forest and I. aristolochiifolia to the state of Ceará. The taxonomic treatment includes identification key, morphological descriptions, geographic distribution, taxonomic and ecological comments, the period of flowering and fruiting, and photos and illustrations of the diagnostic characters.

Morphological characterization of diploid and triploid Acorus calamus (Acoraceae) from southern Western Siberia, parthenocarpy in sterile plants and occurrence of aneuploidy

2020 ◽  
Author(s):  
Dmitry D Sokoloff ◽  
Mikhail V Skaptsov ◽  
Nikolay A Vislobokov ◽  
Sergey V Smirnov ◽  
Alexander I Shmakov ◽  
...  
Keyword(s):  
Western Siberia ◽  
Cell Number ◽  
Morphological Characterization ◽  
Acorus Calamus ◽  
Subsequent Work ◽  
Centre Of Diversity ◽  
Morphological Differences ◽  
Temperate Asia ◽  
Important Medicinal Plant

Abstract Finding morphological differences between cytotypes that are stable throughout their geographical range is important for understanding evolution of polyploid complexes. The ancient monocot lineage Acorus includes two groups, of which A. calamus s.l., an important medicinal plant, is a polyploid complex with a centre of diversity in Asia. European plants are sterile triploids introduced by humans. An early study suggested that plants from temperate Asia are tetraploids, but subsequent work revealed diploids and triploids rather than tetraploids in Asiatic Russia; however, cytotype diversity in Western Siberia is insufficiently known. We document the occurrence of diploids and triploids in Western Siberia. Triploids that do not differ in genome size from European Acorus are abundant in the valley of the river Ob where the ability for extensive vegetative propagation provides ecological advantages. An isolated population of aneuploid triploids with 33 chromosomes is found outside the Ob valley. Flow cytometry provides an efficient tool for identification of aneuploid plants in Acorus. All triploids are sterile, but their flowers develop uniform parthenocarpic fruits. Fruits of diploids usually vary in size within a spadix depending on the number of developing seeds. In contrast to North America, where the native diploid plants differ from the introduced triploids by the absence of a secondary midrib of the ensiform leaf blade, Siberian diploids are similar to triploids in possessing a secondary midrib. We confirm that diploids differ from triploids in the size of air lacunae in leaves, which is determined by cell number rather than cell size in septa of aerenchyma. A combination of spathe width and spadix length measured after the male stage of anthesis shows different (slightly overlapping) patterns of variation between diploids and triploids in our material.

scholarly journals Morphometric Characterization of the Lidia Cattle Breed

Animals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1180
Author(s):  
Juan Manuel Lomillos ◽  
Marta E. Alonso
Keyword(s):  
Cattle Breed ◽  
Internal Variability ◽  
Morphological Characterization ◽  
Relative Depth ◽  
Sexually Dimorphic ◽  
Muscular Development ◽  
Morphological Differences ◽  
Positive Correlations ◽  
Morphometric Characterization

Morphometric studies in Lidia cattle are scarce due to the challenges of handling and approaching this breed of cattle. For this reason, the first morphological characterization of the Lidia breed was carried out using photogrammetry. In the present work, 264 adult individuals (184 males and 80 females), belonging to 21 different herds, were studied. A total of 20 morphological measurements and five indexes were determined in every individual. There were many positive correlations between the measures, giving the model great morphostructural harmony. Considerable internal variability of the studied parameters was observed. This breed reflected significant sexually dimorphic features and internal morphological differences between the different genetic lines of the breed. Lidia cattle are small and mostly have a sub-concave profile (58.4% males and 69.7% females). The male proportionality indexes and the relative depth of the thorax indicated great muscular development of the anterior third and high thoracic capacity. The phaneroptic information describes a mostly black animal with black mucous and hooves and an outstanding development of the dewlaps and the tail in the males.

Morphological Characterization of Chitosan in the Hydroxyapatite/Chitosan Nanocomposites

2009 ◽  
Vol 79-82 ◽  
pp. 1675-1678
Author(s):  
Xiao Ying Lu ◽  
Xiu Hong Wang ◽  
Jian Xin Wang ◽  
Shu Xin Qu ◽  
Jie Weng
Keyword(s):  
Ph Value ◽  
Biomedical Application ◽  
Morphological Characterization ◽  
Layer By Layer ◽  
Oriented Growth ◽  
Hydrothermal Temperature ◽  
Morphological Differences ◽  
Hydrothermal Precipitation

The morphological differences of chitosan (CS) in the hydroxyapatite (HA)/CS nanocomposites were investigated in detailed, which were prepared via in situ hydrothermal precipitation. The results show that the obtained nanocomposites have excellent crystallinity and the crystal has excellent ordered structure, which is important to the composites performances in the biomedical application. Moreover, the CS arrangement and crystallinity in the composites greatly depend on the hydrothermal temperature and the pH value of precipitating agent. The temperature ranging from 373 to 413K and pH value of precipitating agent ranging from 12 to 14 were favorable to the crystallization and oriented growth of CS molecules in the composites. The CS crystals with better arrangement are assembled in the order of layer-by-layer in these composites.

Myrcia adulterina (Myrtaceae), a new species from the Atlantic Forest of Rio de Janeiro, Brazil

Phytotaxa ◽  
2020 ◽  
Vol 452 (2) ◽  
pp. 165-172
Author(s):  
THIAGO FERNANDES ◽  
DUANE FERNANDES LIMA ◽  
JOÃO MARCELO ALVARENGA BRAGA
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Related Species ◽  
Rio De Janeiro ◽  
Conservation Status ◽  
Brazilian Atlantic Forest ◽  
Distribution Map ◽  
Leaf Venation ◽  
Morphological Differences ◽  
A New Species

Myrcia adulterina, a new species from the Brazilian Atlantic Forest, is here described, illustrated and compared with morphologically related species. Additionally, its distribution map and a preliminary conservation status are presented. The new species is here inferred as belonging to Myrcia sect. Reticulosae due its leaves with raised venation, staminal ring densely pilose, hypanthium prolonged in a tube with glabrous inner walls and 3-locular ovaries. Within this section, the species is morphologically related to Myrcia pubipetala, from which it can be distinguished through the laxly reticulate leaf venation and thyrsoid inflorescences with all axes strongly flattened and striated when dry. Myrcia adulterina was misidentified during at least 15 years in herbaria under the name Marlierea tomentosa (currently synonym of Myrcia strigipes, a species belonging to Myrcia sect. Aulomyrcia), which is also morphologically similar. A brief discussion clarifying the morphological differences between these species is also presented.

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