Systematic studies in Lepidosperma (Cyperaceae: Schoeneae) with particular reference to L. laterale

2006 ◽  
Vol 19 (3) ◽  
pp. 273 ◽  
Author(s):  
John Hodgon ◽  
Jeremy J. Bruhl ◽  
Karen L. Wilson
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Strong Support ◽  
Geographical Range ◽  
Study Group ◽  
Similar Species ◽  
Species Limits ◽  
Anatomical Characteristics ◽  
Cluster Analyses ◽  
Variable Species

Lepidosperma laterale exhibits much morphological variation across its geographical range. This study included L. laterale, and morphologically similar species, as well as several comparator species. Phenetic analyses based on 27 morphological and 25 vegetative anatomical characteristics were undertaken in an attempt to resolve taxonomic issues within the study group. Evidence for broadening the delimitation of L. laterale is strong as OTUs of this variable species formed a group with indistinct clusters in all analyses. The mixed, diffuse clusters obtained of OTUs of specimens identified as L. gunnii with specimens of L. laterale suggest that the species limits of the former lie within the limits of the latter. Specimens of most other study group taxa formed relatively cohesive, discrete clusters in ordination and cluster analyses. The results provide strong support for recognition of L. sp. Whian Whian S.F. (J. Hodgon 331 & D.M. Hodgon) and L. sp. Mt Coolum (P.R. Sharpe 5605A) as new species.

scholarly journals Begonia difformis comb. & stat. nov. (Sect. Platycentrum, Begoniaceae), a new species segregated from B. palmata D. Don

Phytotaxa ◽  
2015 ◽  
Vol 227 (1) ◽  
pp. 83 ◽  
Author(s):  
Wai-Chao Leong ◽  
Tao Deng ◽  
Hang Sun ◽  
Ching-I Peng ◽  
Kuo-Fang Chung
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Mountain Areas ◽  
The Status ◽  
Variable Species ◽  
Its Dna Sequences ◽  
A New Species

Begonia palmata D. Don is one of the most widely distributed and morphologically variable species of Asian Begoniaceae. Examinations of its morphological variation indicate that two of its seven varieties, B. palmata var. difformis and B. palmata var. crassisetulosa, both distributed in the Gaoligong Mountain areas of Yunnan, China are indistinguishable and yet distinct from other varieties. Phylogenetic analyses using ITS DNA sequences further reveals that samples identifiable to these two varieties are also distantly related to samples of typical B. palmata. Based on these observations, we combine and elevate these two varieties to the status of species, Begonia difformis (Irmsch.) W.C. Leong, C.I Peng & K.F Chung, comb. & stat. nov..

scholarly journals Taxonomic Revision of the Genus Lactifluus (Russulales, Basidiomycota) of South Korea

2021 ◽  
Author(s):  
Hyun Lee ◽  
Komsit Wissitrassameewong ◽  
Myung Soo Park ◽  
Jonathan J. Fong ◽  
Annemieke Verbeken ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Morphological Variation ◽  
North American ◽  
Species Delimitation ◽  
Taxonomic Revision ◽  
Molecular Data ◽  
Similar Species ◽  
Cryptic Diversity ◽  
Intraspecific Morphological Variation

Abstract Lactifluus (Pers.) Roussel is an ectomycorrhizal genus that was recently recognized to be distinct from the genus Lactarius. To date, 216 Lactifluus species have been reported worldwide. Misidentification of Lactifluus species is common because of intraspecific morphological variation, cryptic diversity, and the limited number of taxonomic keys available. Molecular data are indispensable for species delimitation; a multilocus phylogenetic analysis showed that most Asian Lactifluus species are not conspecific with morphologically similar species present on other continents. In particular, Korea has misused European and North American Lactifluus names. In this study, we evaluated the taxonomy of Lactifluus in Korea using both morphological and multilocus molecular (ITS, nrLSU, rpb1, and rpb2) data. We examined 199 Lactifluus specimens collected between 1980 and 2016, and a total of 24 species across the four Lactifluus subgenera were identified. All Korean species are distinct and clearly separated from European and North American species. Five taxa corresponded to previously described species from Asia and the remaining 19 taxa are confirmed as new species. Herein, we provide keys to the Korean Lactifluus species within their subgenera, molecular phylogenies, a summary of diversity, and detailed description of the new species.

A new species of Wahlenbergia (Campanulaceae) from the Itatiaia National Park, Brazil

Phytotaxa ◽  
2020 ◽  
Vol 436 (2) ◽  
pp. 182-186
Author(s):  
ISIS ROLLIM ◽  
MARCELO TROVÓ
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Morphological Variation ◽  
National Park ◽  
Conservation Status ◽  
Identification Key ◽  
Similar Species ◽  
A New Species

We describe and illustrate Wahlenbergia itatiaiensis, a new species of Campanulaceae, endemic to the Itatiaia National Park in the Atlantic Forest (Brazil). The new species is compared with W. linarioides, the sympatric and morphologically most similar species, and to W. intermedia. Wahlenbergia itatiaiensis is mainly distinguished by the linear to lanceolate leaves with few, short denticles along the margin, 3-locular ovary, and 3-lobed stigma. An identification key for these species is provided. The new species occurs on sandy and rocky, wet soils, adjacent to dirt roadsides of the upper part of the National Park. Detailed comments on the distribution and conservation status, as well as details of morphological variation and photographs are provided.

Paepalanthus capixaba (Eriocaulaceae), a new microendemic species from Espírito Santo, Brazil

Phytotaxa ◽  
2016 ◽  
Vol 258 (1) ◽  
pp. 83 ◽  
Author(s):  
Marcelo Trovó ◽  
Paulo Takeo Sano ◽  
Claudio Nicoletti De Fraga
Keyword(s):  
New Species ◽  
Endangered Species ◽  
Morphological Variation ◽  
Conservation Status ◽  
Similar Species ◽  
Distribution Map ◽  
Espírito Santo ◽  
Critically Endangered Species ◽  
Espirito Santo ◽  
A New Species

We describe and illustrate Paepalanthus capixaba, a new species of Paepalanthus ser. Paepalanthus. The species is endemic to Espírito Santo state and restricted to a very distinct and endangered area, which comprises a mosaic of quartzitic sandy patches within a granitic argillaceous site. The indument of leaves, spathes, and scapes is crucial to recognize the taxon as a unique entity. The species is compared to Paepalanthus klotzschianus, the morphologically most similar species. An official conservation status of critically endangered species was assessed by the Centro Nacional de Conservação da Flora committee. Comments on the occurrence area and the morphological variation of the species, as well as a distribution map, photos, and illustrations are provided.

scholarly journals Morphological Variation In Atyaephyra Desmarestii (Millet, 1831) Within And Among Populations Over Its Geographical Range

2004 ◽  
Vol 5 (2) ◽  
pp. 5 ◽  
Author(s):  
CH. ANASTASIADOU ◽  
A. KOUKOURAS ◽  
M. MAVIDIS ◽  
N. CHARTOSIA ◽  
MD. MOSTAKIM ◽  
...  
Keyword(s):  
Geographical Distribution ◽  
Morphological Variation ◽  
Morphological Features ◽  
Geographical Range ◽  
Northern Greece ◽  
Station Network ◽  
Ionian Islands ◽  
Fresh Waters ◽  
Variable Species ◽  
Key Features

In order to elucidate the distinction of Atyaephyra desmarestii subspecies (A. d. desmarestii, A. d. orientalis, A. d. stankoi and A. d. mesopotamica ) and investigate their geographical distribution in Greece, the main morphological features and somatometric ratios were studied in numerous specimens collected from a dense station network of Greek fresh waters. Specimens from Belgium, Portugal, Albania and Turkey were also examined. Atyaephyra desmarestii was found in western and northern Greece while it was absent in eastern Greece , the Aegean and the Ionian islands. The comparison of the obtained data with those of the literature revealed a clearly overlapping variability of the main key morphological features among the four subspecies. The results of this study indicate that the current A. desmarestii subspecies are not valid on the basis of the used key features. There is only one very variable species with many ecophenotypes.

Paepalanthus calvescens (Eriocaulaceae), a new species from Espírito Santo, Brazil

Phytotaxa ◽  
2019 ◽  
Vol 397 (2) ◽  
pp. 193
Author(s):  
LUCAS ESPINDOLA FLORÊNCIO DA SILVA ◽  
MARCELO TROVÓ
Keyword(s):  
New Species ◽  
Species Distribution ◽  
Morphological Variation ◽  
Similar Species ◽  
Distinct Entity ◽  
Espírito Santo ◽  
Espirito Santo ◽  
A New Species

Paepalanthus calvescens is a new species of Eriocaulaceae, herein described and illustrated. The species is endemic to Espírito Santo state, restricted to a small, unique and endangered habitat composed of quartzitic patches within a primarily granitic area. The indument of leaves, spathes, and scapes is crucial to recognize the taxon as a distinct entity along with the shape and pilosity of other floral and vegetative structures. The species is compared to P. capixaba, the morphologically most similar species occurring in the Espírito Santo state. The new species is also compared to P. spathulatus and P. calvus, which, although occur far from the occurrence site of P. calvescens, share morphological similarities. Comments on the species distribution and conservation, as well as details of morphological variation and photos are provided.

Taxonomic and morphological notes on a tiny new species of Paepalanthus (Eriocaulaceae) from central Brazil

Phytotaxa ◽  
2020 ◽  
Vol 456 (2) ◽  
pp. 203-211
Author(s):  
MARCELO TROVÓ ◽  
ARTHUR DE LIMA SILVA ◽  
ALINE SAYURI TAJIMA ◽  
ALESSANDRA IKE COAN
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
National Park ◽  
Similar Species ◽  
Single Population ◽  
Habitat Ecology ◽  
Line Drawings ◽  
Central Brazil ◽  
Restricted Distribution ◽  
A New Species

We describe and illustrate Paepalanthus campanulatus, a new species of Eriocaulaceae from the Chapada dos Veadeiros National Park (Goiás, Brazil). The species is known from a single population with many individuals growing under rocks and in small caves, sometimes upside down attached to the top of the cave. The new species is mainly distinguished by its usually tiny, unbranched stem bearing a fasciculate inflorescence composed of mostly glabrous, campanulate capitula surrounded by whitish hyaline involucral bracts. Due to its very restricted distribution, the species may be considered endangered. It is compared with Paepalanthus albidus and P. subtilis, the morphologically most similar species. We provide details on the leaf and scape anatomy of these species, as well as comments on the distribution, habitat, ecology, and morphological variation, along with line drawings and photos of the new species.

scholarly journals Do you know Cyathea divergens (Cyatheaceae-Polypodiopsida)? 

Phytotaxa ◽  
2014 ◽  
Vol 161 (1) ◽  
pp. 1 ◽  
Author(s):  
Marcus Lehnert
Keyword(s):  
Type Specimen ◽  
Geographical Range ◽  
Similar Species ◽  
Sterile Hybrid ◽  
Species Status ◽  
Tree Fern ◽  
Variable Species

The Neotropical scaly tree fern Cyathea divergens is a paradigm of a variable species with a wide geographical range. Studies in herbaria and in the field reveal that C. divergens is less frequently collected and less variable than previously thought. A lot of records are based on fragmentary collections of similar species that have the characteristically long-stalked, triangular, pinnatisect pinnules and sparse to absent laminar indument in common, but differ in other characters. Their separation from C. divergens is easy if petiolar characters are considered and even possible if microscopic remnants of the fine scurf on the pinnules are studied. Cyathea tuerckheimii is given here species status, eliminating one variety of C. divergens, whereas C. divergens var. sipaliwiniana is newly described. Cyathea convergens, here newly described, also belongs to this group. The identification of Cyathea ×jurgensenii as a sterile hybrid between C. tuerckheimii and C. fulva reduces the confusion that exists in the separation of C. tuerckheimii from C. divergens and C. fulva. The typification of Cyathea kalbreyeri is corrected here. The type specimen of that species represents a previously unrecognized species, while the specimens known under that name are similar to the type of Cyathea gibbosa, which in turn currently denominates a species that has to be referred to as Cyathea farinosa. One synonym of C. gibbosa, C. surukunensis, may represent a hybrid.

Two New Species of Aira (Poaceae) from the Iberian Peninsula and the Balearic Islands

2020 ◽  
Vol 45 (1) ◽  
pp. 75-84
Author(s):  
Llorenç Sáez ◽  
Javier López-Alvarado ◽  
Pere Fraga ◽  
Regina Berjano ◽  
M. Ángeles Ortiz ◽  
...  
Keyword(s):  
Risk Assessment ◽  
New Species ◽  
Iberian Peninsula ◽  
Diploid Species ◽  
Balearic Islands ◽  
Similar Species ◽  
Chromosome Counts ◽  
Two New Species

Abstract—Two new diploid species, Aira minoricensis and Aira hercynica, are described and illustrated, along with chromosome counts, risk assessment, distribution and habitat, phenology, and comparisons with morphologically similar species. A comparative table and a key for the species of Aira for the Iberian Peninsula and the Balearic Islands are provided to assist in the identification of these overlooked species, and their relationships to other taxa are discussed.

Paepalanthus fabianeae (Eriocaulaceae): A New Microendemic Species from a Morphologically Coherent Clade

2020 ◽  
Vol 45 (4) ◽  
pp. 794-801
Author(s):  
Caroline Oliveira Andrino ◽  
Marcelo Fragomeni Simon ◽  
Jair Eustáquio Quintino Faria ◽  
André Luiz da Costa Moreira ◽  
Paulo Takeo Sano
Keyword(s):  
New Species ◽  
Iucn Red List ◽  
Phylogenetic Position ◽  
Similar Species ◽  
Infrageneric Classification ◽  
Espinhaço Range ◽  
Nuclear Its ◽  
Two Populations

Abstract—We describe and illustrate Paepalanthus fabianeae, a new species of Eriocaulaceae from the central portion of the Espinhaço Range in Minas Gerais, Brazil. Previous phylogenetic evidence based on analyses of nuclear (ITS and ETS) and plastid (trnL-trnF and psba-trnH) sequences revealed P. fabianeae as belonging to a strongly supported and morphologically coherent clade containing five other species, all of them microendemic, restricted to the Espinhaço range. Due to the infrageneric classification of Paepalanthus being highly artificial, we preferred not assigning P. fabianeae to any infrageneric group. Paepalanthus fabianeae is known from two populations growing in campos rupestres (highland rocky fields) in the meridional Espinhaço Range. The species is characterized by pseudodichotomously branched stems, small, linear, recurved, and reflexed leaves, urceolate capitula, and bifid stigmas. Illustrations, photos, the phylogenetic position, and a detailed description, as well as comments on habitat, morphology, and affinities with similar species are provided. The restricted area of occurrence allied with threats to the quality of the habitat, mainly due to quartzite mining, justifies the preliminary classification of the new species in the Critically Endangered (CR) category using the guidelines and criteria of the IUCN Red List.

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