narrow endemic
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2021 ◽  
Vol 66 (2) ◽  
pp. 114-121
Author(s):  
Angel Romo

A taxonomic revision of the Alchemilla in the High Atlas Mountains has been carried out. This genus is represented in Morocco by Alchemilla atlantica, A. gourzai, A. litardieri, A. mairei and by a new taxon A. boratynskii, sp. nov., described here from the High Atlas Mountains range. Data on their chorology, ecology and phenology, as well as an identification key, are provided. The conservation status of this newly described narrow endemic and the other four taxa, also endemics previously known from the Moroccan Atlas Mountains, is provided. Alchemilla hirtipes should be excluded from the flora of Morocco.


Caryologia ◽  
2021 ◽  
Vol 74 (3) ◽  
pp. 141-150
Author(s):  
Bo Shi ◽  
Majid Khayatnezhad ◽  
Abdul Shakoor

One of the most crucial aspects of biological diversity for conservation strategies is genetic diversity, particularly in rare and narrow endemic species. Our study is the first attempt to utilize SCoT markers to check the genetic diversity in Iran. We used 115 plant samples. Our objectives were 1) to check genetic diversity among Geranium species 2) Genetic structure of the Geranium 3) Do the Geranium species exchange genes? 4) To detect isolation by distance among the Geranium species. We used traditional morphological and molecular methods to assess genetic diversity and genetic structure in the Geranium species. A total of 129 amplified polymorphic bands were generated across 13 Geranium species. The size of the amplified fragments ranged from 150 to 3000 bp. G. stepporum showed the highest values for the effective number of alleles (Ne = 1.30) and Shannon information index (I =0.35). Significant ANOVA results (P <0.01) showed differences in quantitative morphological characters in plant species. G. sylvaticum showed high genetic diversity. Mantel test showed a significant correlation (r = 0.17, p=0.0002) between genetic distance and geographical distance, so isolation by distance (IBD) occurred among the Geranium species. According to the SCoT markers analysis, G. kotschyi and G. dissectum had the lowest similarity, and the species of G. sylvaticum and G. pratense had the highest similarity. The present study revealed that a combination of morphological and SCoT methods could distinguish the species of Geranium.


2021 ◽  
Vol 46 (4) ◽  
pp. 1114-1120
Author(s):  
Marcelo Monge ◽  
André Paviotti Fontana ◽  
Claudio Nicoletti de Fraga ◽  
Ludovic Jean Charles Kollmann ◽  
Jimi Naoki Nakajima

Abstract— The Atlantic Forest is the most species rich vegetation in Brazil and holds several phytophysiognomies, including the vegetation on inselbergs, which is a very stressful xeric environment that selects for very specialized biota. Cololobus is an endemic genus from Atlantic Forest inselbergs of eastern Brazil, and Cololobus ruschianus is a new species based on morphological evidence, differing from other species of the genus by its morphological traits in petioles, subinvolucral bracts, and outer involucral bracts. Cololobus ruschianus occurs in Santa Teresa, Espírito Santo State, Brazil and would likely be considered Critically Endangered (CR), based on the criteria of the IUCN red list.


Author(s):  
Juan Francisco Jiménez ◽  
Rubén Ramírez-Rodríguez ◽  
Manuel Melendo-Luque ◽  
Víctor N. Suárez-Santiago ◽  
Pedro Sánchez-Gómez

BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 7530-7549
Author(s):  
Kamil Erken

Verbascum yurtkuranianum is a narrow endemic species occurring in a single location, the northern Bursa province (Turkey). It is an endangered and potentially ornamental plant. No conducted study on its life and biology, production, and aesthetic features is available. This study aimed to reveal its vegetative properties, seed characteristics, methods and requirements for seed germination, germination speed, and potential ornamental value so it can be conserved ex situ and produced. Verbascum yurtkuranianum has potential value as an ornamental plant regarding its aesthetic features as a flower. This study revealed that the total number of individuals in the species is 788. Without any treatment, 70.7% germination rate is achieved if the seeds are stored at 4 °C. The optimum germination temperature was from 15 to 20 °C (77.3% and 78.7%, respectively), and the photoperiod regulation for seed germination was 12/12 or 8/16 (light/dark) hours (74.7% and 76.0%, respectively). The most effective treatment to promote germination rate was found by implementation of 60 min ultrasonic waves (94.3%) or application of 120 min vacuum (95.3%). Germination occurred between 8 and 10 days. A parcel of ex situ conservation was constituted with the seedlings obtained from the germination studies.


Phytotaxa ◽  
2021 ◽  
Vol 521 (1) ◽  
pp. 27-38
Author(s):  
MARCELO D. ARANA ◽  
MARÍA LUJÁN LUNA ◽  
PEDRO C. BERRUETA ◽  
MARÍA LUZ MARTINENCO ◽  
GABRIELA E. GIUDICE

The fern Rumohra ponceana sp. nov., a narrow endemic of the Austral Pampean district, Pampean biogeographic province in Argentina, is described and illustrated. The species inhabits the Tandilia and Ventania Systems, where it grows in sunny rock crevices. The new species differs from the widespread R. adiantiformis (sensu lato) by the reduced size of all parts of the sporophyte and conspicuous capitate glandular hairs at the margins of petiole and rhizome scales. Also, there are significant differences in the architecture of the laminae, the colour and size of the spores and the ornamentation of the perispore, which is folded in R. ponceana and projects in irregular tubercles throughout its surface.


2021 ◽  
Vol 12 ◽  
Author(s):  
Thais M. Teixeira ◽  
Alison G. Nazareno

Intraspecific genetic variation plays a fundamental role in maintaining the evolutionary potential of wild populations. Hence, the assessment of genetic diversity patterns becomes essential to guide biodiversity conservation policies, particularly for threatened species. To inform management strategies for conservation of Mimosa catharinensis – a narrow endemic, critically endangered plant species – we identified 1,497 unlinked SNP markers derived from a reduced representation sequencing method (i.e., double digest restriction site associated DNA sequencing, or ddRADseq). This set of molecular markers was employed to assess intrapopulation genetic parameters and the demographic history of one extremely small population of M. catharinensis (N=33) located in the Brazilian Atlantic Forest. Contrary to what is expected for narrow endemic and threatened species with small population sizes, we observed a moderate level of genetic diversity for M. catharinensis [uHE(0%missing data)=0.205, 95% CI (0.160, 0.250); uHE(30%missing data)=0.233, 95% CI (0.174, 0.292)]. Interestingly, M. catharinensis, which is a lianescent shrub with no indication of seed production for at least two decades, presented high levels of outcrossing [t(0%missing data)=0.883, SE±0.0483; t(30%missing data)=0.909, SE±0.011] and an apparent absence of inbreeding [F(0%missing data)=−0.145, 95% CI (−0.189, −0.101); F(30%missing data)=−0.105, 95% CI (−0.199, −0.011)]. However, the reconstruction of demographic history of M. catharinensis indicated that the population should be suffered a recent bottleneck. Our population genomic study tackles a central issue in evolution and conservation biology and we expect that it will be useful to help safeguard the remaining genetic diversity reported for this unique genetic resource.


Phytotaxa ◽  
2021 ◽  
Vol 520 (2) ◽  
pp. 117-136
Author(s):  
JAN KIRSCHNER ◽  
JAN ŠTĚPÁNEK ◽  
MOSLEM DOOSTMOHAMMADI ◽  
VOJTĚCH ZEISEK

On the basis of new gatherings at the type locality, Taraxacum primigenium was evaluated taxonomically. Its achenes differ substantially from the protologue description that is based on achenes of T. assemanii. Taraxacum primigenium, also on the basis of an nrDNA analysis, is close to T. sect. Piesis, and represents a narrow endemic confined to the Lalezar Mts., SE Iran. Taraxacum assemanii, newly typified, is known from mountains of SE Anatolia and Lebanon, and from the Zagros in SW Iran. It is characterized by large, almost or totally smooth achenes with indistinct cone and a very gradual achene body/beak transition, a thick short beak and a short, slightly brownish pappus. It represents a single member of a newly described section, T. sect. Pristina. The name of T. sect. Primigenia, although with a diagnosis corresponding to the characters of T. assemanii, is to be interpreted according to its type, T. primigenium, and is understood as a synonym of T. sect. Piesis. Another taxon evaluated, T. cylleneum, endemic to several mountain ranges in of Peloponnesos, Greece, is similar to T. primigenium, and very close to the core taxa of T. sect. Piesis. All the species dealt with reproduce sexually.


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