Two new Critically Endangered species of Ditassa (Apocynaceae) from the threatened cangas of the Iron Quadrangle, Minas Gerais, Brazil

Background and aims – Vegetation on ironstone outcrops is highly threatened, particularly due to the impact of mining. In this study, two new species of Ditassa (Metastelmatinae, Asclepiadoideae, Apocynaceae) from the cangas of the Iron Quadrangle (Minas Gerais, Brazil) are described and illustrated, and their conservation status is discussed.Material and methods – Species recognition is based on a morphological and molecular study of recent and historical collections, including a survey of the main herbaria of Brazil, Europe and the United States. Conservation status assessments are based on the evaluation of areas of occupancy and the impact of iron mining in the region.Key results – The two new species are morphologically similar to species in the “Hemipogon from the Espinhaço” clade, which includes Morilloa. Nevertheless, they exhibit flowers with a double corona and are described in Ditassa here, following preliminary phylogenetic analyses with 73 plastid-coding regions. These species are known from only two highly disturbed locations each and are Critically Endangered. A key to identify the 14 species of Metastelmatinae currently recorded in cangas of the Iron Quadrangle is provided.Conclusion – The Critically Endangered Ditassa cangae and D. ferricola are examples of poorly known, nearly extinct species under strong anthropogenic pressure caused by intense mining activities and the lack of adequate legislation for the protection of canga landscapes.

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Increasing our knowledge of Brazilian bamboos: two new species of Chusquea subg. Rettbergia (Bambusoideae, Poaceae)

Phytotaxa ◽

10.11646/phytotaxa.161.3.3 ◽

2014 ◽

Vol 161 (3) ◽

pp. 201 ◽

Cited By ~ 1

Author(s):

Aline Costa Mota ◽

REYJANE PATRÍCIA DE OLIVEIRA ◽

LYNN G. CLARK

Keyword(s):

New Species ◽

Atlantic Forest ◽

Conservation Status ◽

Minas Gerais ◽

Foliage Leaf ◽

Ecological Aspects ◽

Two New Species ◽

Woody Bamboos ◽

Very High ◽

High Diversity

Brazil includes a very high diversity of bamboos, but this diversity is far from completely known. We increase the list of Brazilian woody bamboos by describing two new species of Chusquea, which belong to subgenus Rettbergia. Chusquea ciliatifolia sp. nov. differs from other species of this subgenus by its mottled culms, distinctly ciliate margins of the foliage leaf blades and pilose synflorescences; and C. mirabilis sp. nov. by the presence of branches with sericeous girdles. Both C. ciliatifolia and C. mirabilis occur exclusively in the Atlantic Forest, from the states of Bahia and Minas Gerais, known only from five and three populations, respectively. Comments on morphology, taxonomic relationships, ecological aspects, and conservation status of these new species are provided.

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Two new species of Merostachys (Poaceae: Bambusoideae) from the Brazilian Atlantic forest

Phytotaxa ◽

10.11646/phytotaxa.267.3.5 ◽

2016 ◽

Vol 267 (3) ◽

pp. 219 ◽

Cited By ~ 4

Author(s):

DANIELE F. PARMA ◽

EVANDRO M. PIANISSOLA ◽

RONALDO VINÍCIUS-SILVA ◽

LYNN G. CLARK ◽

ANA PAULA SANTOS-GONÇALVES

Keyword(s):

New Species ◽

Atlantic Forest ◽

Conservation Status ◽

Minas Gerais ◽

Brazilian Atlantic Forest ◽

Minas Gerais State ◽

Two New Species

Two new species, Merostachys ramosa and M. ximenae, from the Brazilian Atlantic forest are here described and illustrated. The species are apparently endemic to Minas Gerais state, with M. ramosa being restricted to the Parque Estadual da Serra do Brigadeiro. The conservation status of each species is examined. A key to all taxa of Merostachys present in eastern Minas Gerais and comments about the species are provided.

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Effects of human disturbance on the mongoose lemur Eulemur mongoz in Comoros: implications and potential for the conservation of a Critically Endangered species

Oryx ◽

10.1017/s0030605315000897 ◽

2015 ◽

Vol 51 (1) ◽

pp. 60-67 ◽

Cited By ~ 2

Author(s):

Bakri Nadhurou ◽

Roberta Righini ◽

Marco Gamba ◽

Paola Laiolo ◽

Ahmed Ouledi ◽

...

Keyword(s):

Group Size ◽

Negative Impact ◽

Human Impacts ◽

Conservation Status ◽

Environmental Parameters ◽

Critically Endangered ◽

Anthropogenic Pressure ◽

Critically Endangered Species ◽

The Impact ◽

Group Size And Composition

AbstractThe decline of the mongoose lemur Eulemur mongoz has resulted in a change of its conservation status from Vulnerable to Critically Endangered. Assessing the current threats to the species and the attitudes of the people coexisting with it is fundamental to understanding whether and how human impacts may affect populations. A questionnaire-based analysis was used to study the impact of agriculture and other subsistence activities, and local educational initiatives, on lemur abundance, group size and composition in the Comoros. On the islands of Mohéli and Anjouan we recorded 214 lemurs in 63 groups, the size and composition of which depended both on environmental parameters and the magnitude and type of anthropogenic pressure. There was no evidence of an impact of anthropogenic disturbance on abundance. In contrast, group size and composition were sensitive to human impacts. The most important threats were conflicts related to crop raiding, as well as illegal capture and hunting. The promotion of educational activities reduced the negative impact of hunting and illegal activities. These results highlight a need for urgent conservation measures to protect the species.

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Revision of the Madagascan endemic Homollea (Rubiaceae - Pavetteae), with description of two new species

European Journal of Taxonomy ◽

10.5852/ejt.2018.423 ◽

2018 ◽

Cited By ~ 2

Author(s):

Petra De Block

Keyword(s):

New Species ◽

Deciduous Forest ◽

Conservation Status ◽

Pollen Grains ◽

Critically Endangered ◽

Distribution Maps ◽

Two New Species ◽

Dry Deciduous Forest ◽

Narrow Endemics ◽

Conservation Assessments

Homollea Arènes (Rubiaceae, subfamily Ixoroideae, tribe Pavetteae) is a genus of shrubs and small trees endemic to western and northern Madagascar. The genus comprises five species occurring in dry deciduous forest, often in limestone areas. The five species are narrow endemics and their conservation status is either Endangered (4 species) or Critically Endangered (1 species). Homollea is characterized by few-flowered, pseudo-axillary, pedunculate inflorescences, well-developed calyces with the lobes much longer than the tube, laterally flattened seeds with a shallow, elongated to linear hilum and entire endosperm, ovules arising from the upper margin of the placenta, and, pollen grains with supratectal elements in the shape of microgemmae. Until now, three species were known and their descriptions are amended. Two further species, H. furtiva De Block sp. nov. and H. septentrionalis De Block sp. nov., are described as new for science. The five species are dealt with in detail: descriptions, distribution maps, conservation assessments, illustrations, lists of exsiccatae and an identification key are given.

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Two new species of Rourea (Connaraceae) from Minas Gerais, Brazil

Phytotaxa ◽

10.11646/phytotaxa.408.2.4 ◽

2019 ◽

Vol 408 (2) ◽

pp. 117-122 ◽

Cited By ~ 2

Author(s):

CÁSSIO A. P. TOLEDO ◽

VINICIUS CASTRO SOUZA

Keyword(s):

New Species ◽

New Taxa ◽

Conservation Status ◽

Minas Gerais ◽

Similar Species ◽

Two New Species ◽

Taxonomic Studies

While developing taxonomic studies about Connaraceae in Brazil, two new species of Rourea were discovered. Rourea barbata and R. prostrata are here described and illustrated. The new taxa belong to Rourea subgen. Rourea sect. Multifoliolatae and comparisons to morphologically similar species are provided, along with notes on their distribution, habitat, taxonomy and conservation status.

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Two new species of Chusquea subg. Swallenochloa (Poaceae: Bambusoideae: Bambuseae) from Minas Gerais, Brazil, and complete description of C. caparaoensis

Phytotaxa ◽

10.11646/phytotaxa.358.3.2 ◽

2018 ◽

Vol 358 (3) ◽

pp. 235 ◽

Cited By ~ 1

Author(s):

EVANDRO MACHADO PIANISSOLA ◽

DANIELE FREITAS PARMA ◽

ANA PAULA SANTOS GONÇALVES ◽

LYNN GAIL CLARK

Keyword(s):

New Species ◽

Conservation Status ◽

Minas Gerais ◽

Reproductive Structures ◽

Brazilian Species ◽

Two New Species ◽

Reproductive Characters ◽

First Time

Two new species included in Chusquea subg. Swallenochloa, C. fruticosa and C. imbricata, are here described and illustrated, and comments on their morphology, conservation status and distribution are provided. Reproductive structures of Chusquea caparaoensis, a species of this subgenus previously known only vegetatively, are described for the first time. Chusquea caparaoensis is here emended and illustrated, and comments about its morphology, conservation status and distribution are provided. Revised keys are provided based on vegetative and vegetative plus reproductive characters for the Brazilian species of C. subg. Swallenochloa.

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Two new species of Inga (Fabaceae-mimosoid clade) from the Atlantic Forest, Brazil

Phytotaxa ◽

10.11646/phytotaxa.521.2.3 ◽

2021 ◽

Vol 521 (2) ◽

pp. 95-104

Author(s):

FLÁVIA C. P. GARCIA ◽

ALINE P. CHAGAS ◽

VALQUÍRIA F. DUTRA

Keyword(s):

New Species ◽

Atlantic Forest ◽

Geographic Distribution ◽

Conservation Status ◽

Coastal Areas ◽

The State ◽

Critically Endangered ◽

Identification Keys ◽

Two New Species ◽

Espirito Santo

Inga (Fabaceae, mimosoid clade) is an important genus in the Atlantic Forest of Brazil where there are 44 species, 60% of which are endemic. In this work, we describe two new species of Inga (I. teresensis and I. tripa) from the Atlantic Forest and provide identification keys to the species of sections Vulpinae and Leptinga in the biome. Illustrations and comments about the geographic distribution, conservation status, phenology, etymology, and taxonomy of the new species are also included. Inga teresensis is only known from the state of Espírito Santo and is categorized as Critically Endangered (CR). Inga tripa occurs in coastal areas of the states of Bahia, Paraíba, Pernambuco, and Sergipe and is categorized as Learn Concern (LC).

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Two new species of Sida (Malvaceae: Malvoideae) for Brazil

Phytotaxa ◽

10.11646/phytotaxa.282.4.6 ◽

2016 ◽

Vol 282 (4) ◽

pp. 291

Author(s):

MASSIMO G. BOVINI

Keyword(s):

New Species ◽

Related Species ◽

Conservation Status ◽

Minas Gerais ◽

The State ◽

Southeastern Brazil ◽

Two New Species

Two new species of Sida (Malvaceae) found in the state of Minas Gerais, southeastern Brazil are described and illustrated: S. oblonga and S. carrascoana, which belong to the sections Cordifoliae and Muticae, respectively. Both are compared to related species, and have their conservation status evaluated.

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Two new species of Callulina (Amphibia: Anura: Brevicipitidae) from the Nguru Mountains, Tanzania

Zootaxa ◽

10.11646/zootaxa.2694.1.2 ◽

2010 ◽

Vol 2694 (1) ◽

pp. 26 ◽

Cited By ~ 3

Author(s):

SIMON P. LOADER ◽

DAVID J. GOWER ◽

HENDRIK MÜLLER ◽

MICHELE MENEGON

Keyword(s):

New Species ◽

Conservation Status ◽

Molecular Data ◽

Critically Endangered ◽

Additional Species ◽

Forest Reserve ◽

Mountain Habitats ◽

Two New Species

Two new species of Callulina are described from the Nguru Mountains, one from the main Nguru South block (C. hanseni sp. nov.) and one from the outlying mountain fragment of the Nguru in Kanga Forest Reserve (C. kanga sp. nov.). The species are diagnosed based on a combination of morphological, acoustic and molecular data. An updated key to the species of all the known Callulina is provided. The conservation status of the two species is examined and, based on highly restricted distributions and ongoing threat to their Nguru Mountain habitats, we recommend a Critically Endangered categorisation. Additional species of Callulina remain to be described from the Nguru Mountains, underlying the extraordinary diversity of the genus in this area.

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Two new species of Microlicia (Melastomataceae) from the Rupestrian Grasslands of Serra do Cipó, Minas Gerais, Brazil

Phytotaxa ◽

10.11646/phytotaxa.316.1.3 ◽

2017 ◽

Vol 316 (1) ◽

pp. 39 ◽

Cited By ~ 2

Author(s):

RICARDO B. PACIFICO ◽

KARINA FIDANZA ◽

FRANK ALMEDA

Keyword(s):

New Species ◽

Conservation Status ◽

Minas Gerais ◽

Mountain Range ◽

Serra Do Cipó ◽

Two New Species ◽

Iucn Criteria

In the course of preparing a monograph of Microlicieae (Melastomataceae) for Serra do Cipó, two new species of Microlicia were discovered that are described and illustrated here. The two proposed species, Microlicia nortecipoana and Microlicia obovatifolia, are probably endemic to this mountain range. Morphological descriptions, diagnoses, photographs and comments on their affinities are provided. Their conservation status is assessed using IUCN criteria.

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