On the identity of Sium frigidum (Apiaceae)

Phytotaxa ◽  
2016 ◽  
Vol 288 (3) ◽  
pp. 265
Author(s):  
LISONG WANG ◽  
HONGRUI ZHANG ◽  
MARK F. WATSON ◽  
SANDRA KNAPP
Keyword(s):  
Southwest China ◽  
Detailed Examination ◽  
Molecular Data ◽  
Field Investigation ◽  
New Combination ◽  
Herbarium Specimens

Taxonomic identity of Sium frigidum remains confusing; the taxon has been treated as belonging to four different genera including Apium, Sium, Chamaesium and Sinocarum. After field investigation, detailed examination of herbarium specimens, and analyses of molecular data, the results show that S. frigidum represent plants only known from southwest China, and conspecific with Apium ventricosum. Therefore, a new combination name, Sium ventricosum, is proposed with full taxonomic treatments. Taxonomic confusing related with this species is also discussed.

scholarly journals The genus Sesuvium (Aizoaceae, Sesuvioideae) in the Southern Cone

Hacquetia ◽  
2021 ◽  
Vol 20 (1) ◽  
pp. 33-48
Author(s):  
Carlos R. Minué ◽  
Adriel I. Jocou
Keyword(s):  
Southern Cone ◽  
Field Investigation ◽  
New Combination ◽  
Herbarium Specimens ◽  
Southern Brazil ◽  
Dichotomous Key ◽  
Succulent Plants ◽  
Ecologic Studies

Abstract Sesuvium is a genus of 14 to 17 species of succulent plants, both annual and perennial, widely distributed in tropical and subtropical regions. The genus Sesuvium has not yet been studied in detail in the Southern Cone (Argentina, Southern Brazil, Chile, Paraguay and Uruguay), which has led to a misidentification of numerous specimens as S. portulacastrum. As part of the ongoing floristic, taxonomic and ecologic studies in Argentina, we revise the genus Sesuvium for the Southern Cone. This study is based on field investigation, examination of herbarium specimens, and revision of literature. The taxonomic treatments, maps of distribution, detailed descriptions, photographs, an illustration, a dichotomous key and a comparative table to differentiate the species of the genus Sesuvium occurring in the Southern Cone are presented. Finally, ecological, morphological, and taxonomic aspects of the species are discussed. The new combination of S. americanum (≡ Trianthema americanum Gillies ex Arn.; = S. verrucosum Raf.) is proposed. Lectotypes for three names are here designated (S. revolutifolium Vahl ex Willd.; S. revolutifolium Lam., and S. parviflorum DC.). Four species should be accepted for the Southern Cone: S. americanum, S. humifusum, S. mezianum and S. sessile. Furthermore, S. portulacastrum is excluded from the flora of the Southern Cone.

Gerhardtia yunnanensis (Agaricales, Lyophyllaceae), a new species from southwest China

Phytotaxa ◽  
2021 ◽  
Vol 484 (2) ◽  
pp. 217-226
Author(s):  
MAN MU ◽  
HONG-YAN HUANG ◽  
TING HUANG ◽  
SHU-DA YANG ◽  
LI-PING TANG
Keyword(s):  
New Species ◽  
Southwest China ◽  
Molecular Data ◽  
Southwestern China ◽  
A New Species

Gerhardtia yunnanensis is described as a new species from southwestern China. The species is characterized by its medium to large basidiomata with a yellow-brown to reddish brown pileus with a translucent-striate pale margin, weakly curved stipe, basidia with both cyanophilic and siderophilic reactions, basidiospore walls having a cyanophilic reaction, basidiospores with minute granular or verruculose ornamentation under SEM, narrowly clavate to irregular or curved clavate cheilocystidia and pleurocystidia, and absence of clamp connections. A comparison of all taxa of the genus was performed based on morphological and ITS and LSU molecular data. Furthermore, we provide a key to the known species of Gerhardtia worldwide.

scholarly journals Cytospora (Diaporthales) in China

2020 ◽  
Vol 45 (1) ◽  
pp. 1-45 ◽  
Author(s):  
X.L. Fan ◽  
J.D.P. Bezerra ◽  
C.M. Tian ◽  
P.W. Crous
Keyword(s):  
New Species ◽  
Host Plants ◽  
Southwest China ◽  
New Combination ◽  
Large Collection ◽  
Dna Phylogeny ◽  
The Past ◽  
Worldwide Distribution ◽  
Wide Range ◽  
Woody Host

Members of the genus Cytospora are often reported as endophytes, saprobes or phytopathogens, primarily causing canker diseases of woody host plants. They occur on a wide range of hosts and have a worldwide distribution. Although several species have in the past been reported from China, the vast majority are not known from culture or DNA phylogeny. The primary aim of the present study was thus to clarify the taxonomy and phylogeny of a large collection of Cytospora species associated with diverse hosts in China. Cytospora spp. were collected in northeast, northwest, north and southwest China, indicating that the cold and dry environments favour these fungi. In this paper, we provide an assessment of 52 Cytospora spp. in China, focussing on 40 species represented by 88 isolates from 28 host genera. Based on a combination of morphology and a six-locus phylogeny (ITS, LSU, act1, rpb2, tef1-α and tub2), 13 new species and one new combination are introduced. The majority of the species investigated here appear to be host-specific, although further collections and pathogenicity studies will be required to confirm this conclusion.

Akanthomyces lepidopterorum, a new lecanicillium-like species

Phytotaxa ◽  
2020 ◽  
Vol 459 (2) ◽  
pp. 117-123
Author(s):  
WAN-HAO CHEN ◽  
YAN-FENG HAN ◽  
JIAN-DONG LIANG ◽  
ZONG-QI LIANG
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Southwest China ◽  
Sequence Data ◽  
New Combination ◽  
Morphological Identification ◽  
Data Support ◽  
A New Species ◽  
Moderate Length

During a survey of entomopathogenetic fungi from Southwest China, a new species, Akanthomyces lepidopterorum was found on an undetermined lepidopteran larva. It differs from other species based on mostly smaller conidia, mononematous conidiophores and moderate length of phialide. Both the morphological identification and phylogenetic analysis of combined ITS, LSU and RPB2 sequence data support A. lepidopterorum as a new species. A new combination is also proposed in the genus Akanthomyces.

Molecular data consistently recover a 'Queensland clade' of Synostemon Phyllanthaceae, Phyllantheae) with distinctive floral morphology

2014 ◽  
Vol 27 (6) ◽  
pp. 450 ◽  
Author(s):  
Ian R. H. Telford ◽  
Kanchana Pruesapan ◽  
Peter C. van Welzen ◽  
Jeremy J. Bruhl
Keyword(s):  
Molecular Analysis ◽  
Floral Morphology ◽  
Sequence Data ◽  
Conservation Status ◽  
Molecular Data ◽  
New Combination ◽  
Its Sequence

Molecular analysis of the newly reinstated genus Synostemon F.Muell. (Phyllanthaceae, Phyllantheae), using ITS sequence data from the now densely sampled genus, confirmed that the previously recognised ‘Queensland clade’ consists of Synostemon albiflorus (F.Muell. ex Müll.Arg.) Airy Shaw, S. sphenophyllus Airy Shaw, Sauropus podenzanae (S.Moore) Airy Shaw and the undescribed Synostemon spinescens, sp. nov. ined., the latter being validated here as S. spinosus I.Telford & J.J.Bruhl. Morphological synapomorphies for the clade are as follows: linear, apiculate anthers that are connivent but only basally connate, and thickened, clavate, recurved stigmas. A new combination is provided under Synostemon for Sauropus podenzanae as Synostemon podenzanae (S.Moore) I.Telford & Pruesapan and Sauropus convallarioides J.T.Hunter & J.J.Bruhl is formally placed in synonymy under Synostemon sphenophyllus. Descriptions, distributional data and notes on ecology and conservation status are provided for these species. Phyllanthus albiflorus F.Muell. ex Müll.Arg., the basionym of Synostemon albiflorus, is lectotypified.

Molecular data allow to elucidate the taxonomic placement of some Umbelliferae from Middle Asia and Afghanistan (Pinacantha, Ladyginia, Peucedanum mogoltavicum)

Phytotaxa ◽  
2018 ◽  
Vol 350 (1) ◽  
pp. 42 ◽  
Author(s):  
GALINA V. DEGTJAREVA ◽  
MICHAEL G. PIMENOV ◽  
TAHIR H. SAMIGULLIN
Keyword(s):  
Phylogenetic Tree ◽  
Dna Sequence ◽  
Sequence Data ◽  
Molecular Data ◽  
Systematic Position ◽  
New Combination ◽  
Dna Sequence Data ◽  
Middle Asia ◽  
Molecular Phylogenetic Tree ◽  
Molecular Phylogenetic

The systematic position of three Apiaceae-Apioideae taxa, Pinacantha porandica, Ladyginia bucharica and Peucedanum mogoltavicum, from Middle Asia and Afghanistan, is clarified based on nrITS DNA sequence data. In the molecular phylogenetic tree, the monotypic Pinacantha is placed in unresolved position within the Ferulinae. Although there is no morphological information on essential characters, we propose a new position of Pinacantha porandica within the genus Ferula. As a result a new combination Ferula porandica is proposed, with a new section Pinacantha to accommodate it. The attribution of Peucedanum mogoltavicum to Ferula has been confirmed, its correct name being Ferula lithophila. The genus Ladyginia should not be included in Ferula, its closest relatives being Mozaffariania and Glaucosciadium from the Glaucosciadium Clade.

Phylogenetic analysis based on nuclear DNA and morphology defines a clade of eastern Australian species of Acacia s.s. (section Juliflorae): the 'Acacia longifolia group'

2010 ◽  
Vol 23 (3) ◽  
pp. 162 ◽  
Author(s):  
Gillian K. Brown ◽  
Catherine Clowes ◽  
Daniel J. Murphy ◽  
Pauline Y. Ladiges
Keyword(s):  
Nuclear Dna ◽  
Molecular Data ◽  
Herbarium Specimens ◽  
Nuclear Rdna ◽  
Flora Of Australia ◽  
Informal Group ◽  
Australian Species ◽  
Cladistic Analyses ◽  
Acacia Longifolia ◽  
Morphological And Molecular Data

Seventeen Australian, phyllodinous species of Acacia s.s. (from sections Juliflorae and Phyllodineae) were analysed to test the monophyly and relationships of ‘the Acacia longifolia group’, an informal group recognised in the Flora of Australia. Analyses were based on both morphological and molecular data, with A. triptera as an outgroup. A total of 92 herbarium specimens was investigated, with 15 phyllode, inflorescence, flower, pod and seed characters scored. The ITS and ETS regions of nuclear rDNA were sequenced and combined with a larger dataset sampled from species of all major clades of Acacia, totalling 65 accessions. Cladistic analyses provided evidence of a clade that defines the A. longifolia group as follows: A. alpina, A. axillaris, A. courtii, A. dallachiana, A. derwentiana, A. floribunda, A. longifolia subsp. longifolia and A. longifolia subsp. sophorae, A. longissima, A. maidenii, A. mucronata, A. obtusifolia, A. orites, A. oxycedrus, A. phlebophylla, A. rhigiophylla and A. riceana (all sect. Juliflorae), but excluding A. verticillata (section Juliflorae) and A. genistifolia (section Phyllodineae). The A. longifolia group is recognised as including south-eastern Australian species with cylindrically spiked inflorescences and phyllodes with prominent anastomosing venation.

scholarly journals A new combination in Cremanthodium (Asteraceae, Senecioneae) from Sichuan, China

Phytotaxa ◽  
2016 ◽  
Vol 252 (2) ◽  
pp. 137 ◽  
Author(s):  
LONG WANG ◽  
CHEN REN ◽  
QIN-ER YANG
Keyword(s):  
Type Material ◽  
New Combination ◽  
Critical Examination ◽  
Herbarium Specimens

Critical examination of herbarium specimens (including type material) of Cremanthodium ellisii var. roseum (Asteraceae, Senecioneae) has shown that the variety should be transferred to C. brunneopilosum. We therefore propose a new combination, C. brunneopilosum var. roseum.

Clarification of the confusing identity of Cremanthodium atrocapitatum (Asteraceae, Senecioneae), with a new combination and a new species in the genus

Phytotaxa ◽  
2016 ◽  
Vol 288 (1) ◽  
pp. 1 ◽  
Author(s):  
LONG WANG ◽  
CHEN REN ◽  
QIN-ER YANG
Keyword(s):  
New Species ◽  
Type Material ◽  
New Combination ◽  
Herbarium Specimens ◽  
Taxonomic Confusion ◽  
A New Species

Cremanthodium atrocapitatum (Asteraceae, Senecioneae) has been previously largely misunderstood, resulting in considerable taxonomic confusion involving several taxa. Based on observations of both herbarium specimens (including type material) and living plants, here we clarify the taxonomic identity of this species. The Xizang (Tibet) plants previously referred to C. atrocapitatum are described as a new species, i.e. C. bomiense. Cremanthodium campanulatum var. brachytrichum is found to be very close to C. atrocapitatum rather than C. campanulatum, and is thus treated as C. atrocapitatum var. brachytrichum.

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