Didymodon obtusus (Bryophyta, Pottiaceae), a new species from Tibet, China

Phytotaxa ◽  
2018 ◽  
Vol 372 (1) ◽  
pp. 97
Author(s):  
JIN KOU ◽  
CHAO FENG ◽  
XIAO-MING SHAO

A new moss species, Didymodon obtusus J. Kou, X.-M. Shao & C. Feng, is described and illustrated from Tibet, China. It differs most saliently from congeners by the combination of ovate-lanceolate to oblong-lanceolate and appressed leaves when dry, bistratose leaf lamina, obtuse leaf apex, 2–3-stratose leaf margins, percurrent costa, cross-section of the costa with 2–3 layers of guide cells and without ventral stereids, and smooth laminal cells. This species is compared with similar species and its ecology is discussed.

Phytotaxa ◽  
2018 ◽  
Vol 351 (4) ◽  
pp. 273 ◽  
Author(s):  
SACHIN M. PATIL ◽  
RONAK N. KACHHIYAPATEL ◽  
RAVI S. PATEL ◽  
KISHORE S. RAJPUT

A new species, Ophioglossum gujaratense, is described from Gujarat state (India). It resembles O. polyphyllum in the presence of sheathing rhizomorph and 1–4 (rarely 5) trophophylls. On the other hand, rhizomorph morphology, common stalk, trophophyll arrangement, leaf lamina and leaf base make it distinct from O. polyphyllum. Stoloniferous roots, trophophyll number and their arrangement of the new species also resemble O. parvifolium and O. nudicaule. However, both these species lack a sheath around the leaf-stem base. A comparative account of morphologically similar species, viz. O. gujaratense, O. polyphyllum, O. parvifolium and O. nudicaule is provided. The distinctness of the new taxon has been confirmed using molecular data from chloroplast genome markers viz rbcL, trnH-psbA, trnF-trnE and trnL-trnF.


Phytotaxa ◽  
2021 ◽  
Vol 527 (1) ◽  
pp. 67-74
Author(s):  
LONG KE PHAN ◽  
STEFAN WANKE ◽  
CHRISTOPH NEINHUIS ◽  
TRUONG VAN DO

Aristolochia luudamcui (Aristolochia subgen. Siphisia, Aristolochiaceae), a new species from Vietnam, previously misidentified as A. utriformis, is described and illustrated here. The new species is most similar to A. pseudoutriformis and A. utriformis concerning the morphology of the leaf lamina, the color of the perianth, and the shape of the limb, but A. luudamcui can be distinguished from the other two species by having a deeply 3-lobed limb and a glabrous, yellow inner surface of limb lobes. A detailed description, information on ecology, phenology, distribution, usage, a provisional assessment of the conservation status of the new species, and a comparison with morphologically similar species are provided as well.


Phytotaxa ◽  
2021 ◽  
Vol 510 (2) ◽  
Author(s):  
YONG-YING LIU ◽  
YU-PING QUAN ◽  
YU-HUAN WU

The form of the gemmae appears to be constant within Bryum species, and it is an important character for distinguishing among closely related species. In this study, we describe a new species of Bryum, B. glacierum Y.Y. Liu & Y.H. Wu, that was collected from Tianshan Mountain in China along with a description of its gemmae. This species is distinguished morphologically by (1) gemmiforfm to julaceous shoots; (2) broadly ovate leaves, strongly concave, with obtuse to acuminate apex, plane and undifferentiated leaf margins, rhombic to rhomboidal distal and medial cells; and (3) dark red-brown, obconic or ovate bulbils with peg-like leaf primordia, densely clustered in the leaf axils of sterile shoots. The new moss species is currently known from two localities in northwestern China. The species seems to prefer high altitudes, growing as a pioneer mainly on ground exposed by retreating glaciers. The principal distinctive characters that separate Bryum glacierum from similar species of Bryum and Pohlia are discussed. An identification key for bulbiferous species of Bryum in China is provided.


Phytotaxa ◽  
2019 ◽  
Vol 424 (2) ◽  
pp. 97-105
Author(s):  
GLORIA MARTÍNEZ-SAGARRA

Festuca devesae (Poaceae), a new species from the low mountains of northern Iberian Peninsula (Burgos and Álava provinces, Spain), is described. According to its morphology, it belongs to Festuca subsect. Festuca, the most diverse group within the genus. The new species differs from other known consectional taxa by having a continuous layer of abaxial subepidermal sclerenchyma in the leaf cross-sections, and by the leaf sheaths closed to the mouth. Both traits are found together only in F. segimonensis and F. hystrix, from which F. devesae clearly differs in the leaf apex shape, the size of the auricles, and the leaf anatomy in cross-section, among other traits. A detailed morphometric description, photographs, and data on leaf anatomy, phenology, ecology, and distribution are given. A comparison with morphologically similar species and an identification key are also provided.


Zootaxa ◽  
2017 ◽  
Vol 4254 (3) ◽  
pp. 357 ◽  
Author(s):  
DANIEL CHIRIVI JOYA

We present the description of Phrynus calypso sp. nov. from Trinidad and Tobago, and Venezuela This species is very similar to Phrynus pulchripes (Pocock), however after examining Colombian specimens of P. pulchripes (ca. type locality), many differences were found. Characters commonly used in diagnosis of Phrynus species are variable and make identification difficult. Differences in a few structures, like pedipalpal spines, could not be enough to provide a useful diagnosis.  It is necessary to account for variation of similar species in conjunction, and select non overlapping groups of characters. Observations in the variation in both species are presented, pointing out sources of confusion, and suggesting alternative characters to support diagnoses. At the moment, details about variation in many species in Phrynus, like that of P. pulchripes, are poorly known, and for this reason a redescription is provided. 


Phytotaxa ◽  
2018 ◽  
Vol 336 (2) ◽  
pp. 148 ◽  
Author(s):  
CARLOS CERREJÓN ◽  
ENRIQUE MAGUILLA ◽  
DIETMAR QUANDT ◽  
JESÚS MUÑOZ ◽  
MODESTO LUCEÑO

Specimens of Andreaea sect. Andreaea collected in Lesotho show morphological differences from the remaining Sub-Saharan Africa species in the group. Particularly, Lesotho specimens have much larger spores, a character diagnostic in the genus. Spore size also separates the Lesotho specimens from typical A. rupestris from the Northern Hemisphere. Consequently, we describe a new species from the highlands of Lesotho (Andreaea barbarae). Additionally, we present a taxonomic key to all accepted species of Andreaea sect. Andreaea in sub-Saharan Africa.


Phytotaxa ◽  
2015 ◽  
Vol 205 (2) ◽  
pp. 90 ◽  
Author(s):  
XIN-LEI FAN ◽  
KEVIN D. HYDE ◽  
JIAN-KUI LIU ◽  
YING-MEI LIANG ◽  
CHENG-MING TIAN

The family Botryosphaeriaceae encompasses important plant-associated pathogens, endophytes and saprobes with a wide geographical and host distribution. Two dark-spored botryosphaeriaceous taxa associated with Rhus typhina dieback and canker disease were collected from Ningxia Province, in northwestern China. Morphology and multigene analysis (ITS, LSU and EF-1α) clearly distinguished this clade as a distinct species in the genus. Phaeobotryon rhois is introduced and illustrated as a new species in this paper. The species is characterized by its globose, unilocular fruiting bodies and small, brown, 1-septate conidia. It can be distinguished from the similar species P. cercidis, P. cupressi, P. mamane and P. quercicola based on host association and conidial size and colour.


2021 ◽  
Vol 28 (2) ◽  
Author(s):  
BRETT RATCLIFFE

Cyclocephala vulcanorum is described as a new species from the Refugio Los Volcanes in Santa Cruz de la Sierra Department in Bolivia. A description, a diagnosis separating the new species from similar species, illustrations, and a distribution map are provided.


Zootaxa ◽  
2018 ◽  
Vol 4526 (3) ◽  
pp. 381
Author(s):  
LYLIA BOUMENDJEL ◽  
NICOLAS RABET ◽  
MOUNIA AMAROUAYACHE

A new species of Chirocephalus collected in temporary freshwater ponds in Northeastern Algeria is described. Chirocephalus sanhadjaensis sp. nov. seems to be restricted to Ain-Magroun and Belkroun pools (Skikda Province). The most similar species is C. marchesonii Ruffo & Vesentini, 1957, which is endemic to Italy. The new taxon, belonging to the “diaphanus” species group of the genus Chirocephalus, is identifiable from all congeners primarily by the shape of the antennal appendages and that of the apex of the distal antennomere of the antennae. The resting eggs of C. sanhadjaensis sp. nov. are similar to those of C. diaphanus or C. salinus but are larger (448.24 ± 30.93 µm). The restricted distribution of this species confirms the high biological diversity of the area of the Guerbes-Sanhadja eco-complex. 


Phytotaxa ◽  
2018 ◽  
Vol 365 (3) ◽  
pp. 295
Author(s):  
CHE-WEI LIN ◽  
CHI-HUNG LEE

Reknowned for its high biodiversity and endemism, over one third of the Bornean species of Phyllagathis were discovered in Sarawak over the past two years. In this study, we report an addition of a new species of Phyllagathis, namely P. stellata from southwestern Sarawak. In addition to the taxonomic account, color plates, line drawings, a distribution map, and comparisons with morphologically similar species are provided to aid in identification.


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