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.

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.

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.

A reassessment of Dioon merolae (Zamiaceae) leads to the description of Dioon salas-moralesae, a new cycad species from Southeastern Oaxaca, Mexico

Phytotaxa ◽  
2021 ◽  
Vol 528 (2) ◽  
pp. 93-110
Author(s):  
JOSÉ SAID GUTIÉRREZ-ORTEGA ◽  
MIGUEL ANGEL PÉREZ-FARRERA ◽  
JEFFREY CHEMNICK ◽  
TIMOTHY J. GREGORY
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Related Species ◽  
Statistical Tests ◽  
Distinct Species ◽  
Closely Related Species ◽  
Morphometric Variation ◽  
Isthmus Of Tehuantepec ◽  
Morphological Differences ◽  
Recent Evaluation

The cycad genus Dioon comprises 17 species from Mexico and Honduras, all of them delimited based on their morphological variation and geographic distribution. A recent evaluation of the biological variation among Dioon populations from Oaxaca and Chiapas, Mexico, demonstrated that the concept of the species Dioon merolae actually consists of three lineages that should be recognized as different taxa. One lineage was already described as Dioon oaxacensis, leaving the concept of Dioon merolae comprising two lineages distributed on both sides of the Isthmus of Tehuantepec. However, there are conspicuous morphological differences between these two lineages. Here, we tested whether such a differentiation within the concept of Dioon merolae merits the differentiation of two different taxa. We evaluated the qualitative and morphometric variation among populations belonging to the Dioon merolae lineages, and compared it with the closely related species Dioon oaxacensis. Morphological observations and statistical tests demonstrated that the populations of southeastern Oaxaca, traditionally considered as part of Dioon merolae, represent a distinct species that we described as Dioon salas-moralesae. Identifying the diagnostic characters of this new species helps enable an understanding of the criteria that should be considered to delineate the boundaries between other cycad species.

Revisiting the circumscription of Chusquea anelythra (Poaceae–Bambusoideae–Bambuseae): lectotypification, redescription, geographic distribution, and conservation status

Phytotaxa ◽  
2021 ◽  
Vol 529 (1) ◽  
pp. 71-85
Author(s):  
KAIO VINICIUS DE A. VIDAL ◽  
CASSIANO A. DORNELES WELKER ◽  
ALAÍSMA PEREIRA DA SILVA ◽  
ANA PAULA SANTOS-GONÇALVES ◽  
LYNN G. CLARK ◽  
...  
Keyword(s):  
Geographic Distribution ◽  
Related Species ◽  
Conservation Status ◽  
Neotropical Region ◽  
Clear Definition ◽  
Original Publication ◽  
Morphological Comparison ◽  
Informal Group ◽  
Emended Description ◽  
Definition Of

With 193 described species, Chusquea is the most diverse bamboo genus in the Neotropical region. Brazil, with 48 accepted species and 44 of them endemic, is one of its major centers of diversity. Among the Brazilian species, C. anelythra was only superficially characterized in its original publication almost 200 years ago, without a clear definition of its type-material, description of culm leaves, or comments on its geographic distribution or related species. As the absence of such information has greatly complicated the taxonomic delimitation of C. anelythra, the major aim of this paper is to clarify the identity of this species based on fieldwork and herbarium investigation, providing an emended description, illustrations, and photos of this species. We also designate a lectotype for the name C. anelythra, and provide a morphological comparison with two similar members of the C. meyeriana informal group. Geographic distribution and conservation status are also updated for this species.

Multigene phylogeny and morphology of Alternaria reveal a novel species and a new record in China

Phytotaxa ◽  
2019 ◽  
Vol 397 (2) ◽  
pp. 169
Author(s):  
YA QUN TAO ◽  
GUO GENG JIA ◽  
SEIN LAI LAI AUNG ◽  
QING LI WU ◽  
HONG XUE LU ◽  
...  
Keyword(s):  
Related Species ◽  
New Record ◽  
Novel Species ◽  
Distinct Species ◽  
Multigene Phylogeny ◽  
Closely Related Species ◽  
Multigene Analysis ◽  
Glehnia Littoralis ◽  
Alternaria Species ◽  
Leaf Symptoms

Two Alternaria species, A. carotiincultae and A. glehniae sp. nov. are isolated from necrotic leaf symptoms of Ligusticum chuanxiong Hort. and Glehnia littoralis Fr. Schmidt ex Miq in China, respectively. The two species are determined as distinct species belonging to sect. Radicina of Alternaria based on morphology and a multigene analysis of ITS, EF-1α, RPB2 and ATPase sequences. Alternaria glehniae is illustrated here as a novel species because the conidial size, septa and sporulation patterns are different from its closely related species. A. carotiincultae is also described as a new record in China.

Overlooked morphological variation and a proposal for a new taxonomic circumscription of Alyssum simplex (Brassicaceae)

Phytotaxa ◽  
2019 ◽  
Vol 416 (2) ◽  
pp. 149-166
Author(s):  
VERONIKA CETLOVÁ ◽  
JAVIER FUERTES-AGUILAR ◽  
DARIA IUDOVA ◽  
STANISLAV ŠPANIEL
Keyword(s):  
Genome Size ◽  
Genetic Markers ◽  
Geographic Distribution ◽  
Morphological Variation ◽  
Related Species ◽  
Evolutionary History ◽  
Separate Species ◽  
Taxonomic Treatment ◽  
Morphological Differences

A recent study of European annual taxa of Alyssum has revealed that A. simplex includes two cytotypes (diploid and tetraploid) which differ in genetic markers, evolutionary history, and monoploid relative genome size. In this paper we present a new taxonomic treatment of A. simplex in which we treat the two cytotypes as two separate species. We select and discuss suitable names for both taxa (diploid A. simplex and tetraploid A. collinum), examine their morphological differences and survey their geographic distribution. In addition, we compare both cytotypes with the morphologically similar and genetically related species A. strigosum and designate lectotypes and a neotype of several relevant names.

A new species of Tubaria (Tubariaceae, Agaricales) from northeast China

Phytotaxa ◽  
2019 ◽  
Vol 409 (2) ◽  
pp. 93-100
Author(s):  
HUI ZENG ◽  
LIANGLIANG QI ◽  
YUPENG GE ◽  
YU LI
Keyword(s):  
New Species ◽  
Bayesian Inference ◽  
Maximum Likelihood ◽  
Related Species ◽  
Internal Transcribed Spacer ◽  
Northeast China ◽  
Phylogenetic Analyses ◽  
Taxonomic Description ◽  
Internal Transcribed Spacer Sequences ◽  
A New Species

Tubaria squamata is described as new from Jiaohe county, Jilin province, China. This species is distinctive morphologically because of the small (slightly) hairy or scaly pileus, subelliptic to elliptic non-amyloid basidiospores, subclavate to cylindrical or lageniform cheilocystidia, and a pileipellis as a cutis. Phylogenetic analyses based on internal transcribed spacer sequences with Bayesian Inference analysis (BA) and Maximum Likelihood (ML) showed that T. squamata is different from related species. Illustrations and a complete taxonomic description are also provided, as well as a key to the Tubaria species known from China.

A TAXONOMIC REVISION OF THE GENUS PSEUDOPHYSALOPTERA BAYLIS, 1934 (NEMATODA: PHYSALOPTERIDAE)

1963 ◽  
Vol 41 (6) ◽  
pp. 1069-1077 ◽  
Author(s):  
G. A. Schad
Keyword(s):  
North American ◽  
Related Species ◽  
Taxonomic Revision ◽  
Distinct Species ◽  
Closely Related Species ◽  
Tentative Identification

The genus Pseudophysaloptera, recognized as a genus distinct from Physatoptera, is tentatively considered monotypic. The several species previously assigned to the genus Pseudophysaloptera, and the closely related species Physaloptera kotlani, have been reduced to one polytypic species, Pseudophysaloptera formosana, with two subspecies, P. f. formosana and P. f. soricina. The former occurs in Oriental species of Suncus, while the latter occurs in Palaearctic and Ethiopian soricid insectivores. North American specimens, which may represent a distinct species, are tentatively assigned to P. f. soricina. Presently available collections are only sufficient for a tentative identification of the Nearctic form.

Aspidistra xichouensis (Asparagaceae), a new species from the karst region in southeastern Yunnan, China

Phytotaxa ◽  
2020 ◽  
Vol 439 (2) ◽  
pp. 143-149
Author(s):  
LEI CAI ◽  
BO PAN ◽  
CHUN-RUI LIN ◽  
ZHI-LING DAO ◽  
GUANG-WAN HU
Keyword(s):  
New Species ◽  
Related Species ◽  
Leaf Blade ◽  
Yunnan Province ◽  
Karst Region ◽  
A New Species ◽  
Size And Structure

Aspidistra xichouensis, a new species of Asparagaceae from Xichou County, Yunnan Province, China, is described and illustrated. The new species is similar to A. minutiflora, A. graminifolia and A. cylindrica in the shape of leaf blade and the size and structure of flowers, but can be easily distinguished mainly by the conspicuous petiole, upright peduncle, and erect flowers with 4(–5) perianth lobes. The results of comparisons with the related species are also provided.

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