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Cirsium handaniae (Asteraceae), a new species from Turkey
(Finnish Zoological Botanical Publishing Board, 2009) Yildiz, Bayram; Dirmenci, Tuncay; Arabaci, Turan
Cirsium handaniae Yildiz, Dirmenci & Arabaci (Asteraceae) is described as a new species from northeastern Anatolia, Turkey. It belongs to the section Epitrachys and appears to be close to C. macrobotrys and C. lappaceum s. lato. Diagnostic characters, as well as a full description and figures are provided. Its morphological characters are discussed and compared with the related species.
Cirsium sivasicum sp nov and C-peshmenianum sp nov (Asteraceae) and their allies from Turkey
(Wiley, 2011) Yildiz, Bayram; Arabaci, Turan; Dirmenci, Tuncay; Celenk, Sevcan
Two new species of Cirsium Mill. from east Anatolia (Turkey): C. sivasicum Yildiz, Arabaci & Dirmenci and C. peshmenianum Yildiz, Dirmenci & Arabaci, are described and illustrated. Both new species belong to C. sect. Epitrachys DC. (Asteraceae: Cardueae) and are closely related to C. rigidum DC., C. leuconeurum Boiss. & Hausskn. and C. karduchorum Petr. The differences between the new species and their allies are discussed and a diagnostic key is provided. A detailed description of a previously poorly known species, C. leuconeurum, is also provided. The pollen grain morphology of the new species and their allies were investigated with light and scanning electron microscopes. Based on the shape of the spines and the surface ornamentation, the pollen grains of the species were divided into 3 types: C. rigidum and C. sivasicum (type I), C. leuconeurum and C. pesmenianum (type II), C. karduchorum (type III).
Cirsium yildizianum (Asteraceae: Cynareae), a new species from East Anatolia, Turkey
(Finnish Zoological Botanical Publishing Board, 2011) Arabaci, Turan; Dirmenci, Tuncay
Cirsium yildizianum Arabaci & Dirmenci sp. nova (Asteraceae: Cynareae) is described from East Anatolia, Turkey. It belongs to the section Epitrachys and is morphologically close to C. macrobotrys and C. turkestanicum s. lato. It differs from them mainly in its habit, distinctly pedunculate inflorescence, capitula number and the features of the phyllaries.
Evaluation of Antioxidant Activities, Phenolic Constituents and Essential Oil Composition of Marrubium heterodon (Benth.) Boiss. & Balansa from Turkey
(Colegio Farmaceuticos Provincia De Buenos Aires, 2020) Arabaci, Turn; Icen, Mehmet S.; Dirmenci, Tuncay; Goger, Fatih; Baser, Kemal H. C.
This study comprises the antioxidant activities, phenolic constituents and essential oil composition of Marrubium heterodon (Benth.) Boiss. & Balansa, an endemic species distributed in Turkey. Essential oil was obtained by hydrodistillation from the aerial parts, and analysed by gas chromatography (GC) and GC/mass spectrometry (MS). In total, 38 components representing 86.8% of the oil were determined. The major components of the essential oil were alpha-pinene (17.3%), myrtenal (11.9%) and alpha-terpineol (5%). The phenolic composition of the aqueous, methanolic and ethyl acetate extracts were evaluated by liquid chromatography (LC)-MS/MS. The antioxidant activity of each extract was determined by using the in vitro 2,2-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, 2,2'-Azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical cation decolorization and Copper (II) reducing antioxidant capacity (CUPRAC) assays. To the best of our knowledge, this is the first report on the antioxidant activities, phenolic constituents and essential oil composition of M. heterodon.
Hybridization among three Cirsium (Asteraceae) species and important evidence for three new hybrids from Turkey
(Tubitak Scientific & Technological Research Council Turkey, 2019) Dirmenci, Tuncay; Ozcan, Taner; Arabaci, Turan; Celenk, Sevcan; Ismailova, Gulnar; Yildiz, Bayram
In this study, three new hybrids from the genus Cirsium are described for the first time. Cirsium xnezaketiae Yildiz, Dirmenci & Arabaci, C. xkelkitensis Yildiz, Arabaci & Dirmenci, and C. xerzincanicum Yildiz, Dirmenci & Arabaci are investigated in detail morphologically, palynologically, and molecularly. The hybrid individuals were detected on field trips due to their intermediate morphological characters. Their morphological properties were analyzed to compare with their parents. The pollen grain morphologies of the hybrids and their allies were investigated using light and a scanning electron microscope. The pollen grains were radially symmetrical, isopolar, trizonocolporate, and with echinate or scabrate sculpturing. The tectum is psilate/punctate, microreticulate, or ornate in sculpture. Dimorphic pollen grains were encountered in C. leucocephalum (Willd.) Spreng. subsp. leucocephalum. Two nuclear DNA regions were used to find single nucleotide polymorphisms. nrITS DNA data gave more information than nrETS data about polymorphism. In conclusion, C. xnezaketiae, C. xkelkitensis, and C. xerzincanicum exhibit some significant morphological, palynological, and molecular differences from their parents and present evidence of potential introgression hybridization. Since the hybrids live in a complex with their parents, and some parents have polymorphic loci like their putative hybrids, it can be presented as evidence for potential introgression since backcrossing may be possible among taxa.
An important hybrid zone: evidence for two natural homoploid hybrids among three Origanum species
(Finnish Zoological Botanical Publishing Board, 2020) Dirmenci, Tuncay; Ozcan, Taner; Yazici, Turker; Arabaci, Turan; Celenk, Sevcan; Martin, Esra
Based on combined results of different approaches we describe two new natural hybrids, Origanum x bilgilii Dirmenci, T. Yazici & Arabaci and O. x dumanii Dirmenci, Arabaci & T. Yazici from southern Turkey (Antalya). They have a common parent, Origanum saccatum. Morphology and pollen micromorphology of the collected plants were studied, and a comparison of one nuclear (nrITS) and one chloroplast (rpl32) DNA marker was performed. The ploidy level of the two hybrids was established by chromosome counts. Both hybrids have some morphological characters in the leaves. bracts, calyces and corollas that are intermediate between those of their parents. Surface sculpturing and pollen grain size and shape of the hybrids vary and differ to a certain degree from those of the parental species. Heterozygous loci were detected in nrITS sequences of both O. x bilgilii and O. x dumanii, while rpl32 sequences were uninformative. Both hybrids and their parents have the same chromosome number of 2n = 30.
Investigation of therapeutic potential of three endemic Cirsium species for global health problem obesity
(Elsevier, 2021) Sener, Sila Ozlem; Ozgen, Ufuk; Kanbolat, Seyda; Korkmaz, Nuriye; Badem, Merve; Hanci, Hatice; Dirmenci, Tuncay
Obesity is a risk factor for metabolic disorders causes serious health problems and economic costs globally. Some Cirsium genus has been reported to possess anti-obesity effect and traditional uses for vascular diseases, anti-inflammatory and diuretic effects. This study aims to investigate the therapeutic value of endemic Cirsium species for obesity treatment. C. balikesirense Yildiz, Arabaci & Dirmenci (CB), C. nerimaniae Yildiz, Dirmenci & Arabaci (CN) and C. sommieri Petr. (CS) were selected for the study. High-fat diet (HFD) induced obese Sprague Dawley rats were employed for in vivo studies. The extract obtained aerial parts of Cirsium species were applied to rats orally for 8 weeks. To interpret the antiobesity activity, body weight of the rats were measured. Also, biochemical, histopathological and quantitative real-time PCR (RT-PCR) analysis were performed on rats. Bioactivity-guided fractionation studies were carried out guidance with in vitro lipase enzyme inhibition. The structures of the pure compounds purified using various chromatographic techniques were determined by spectroscopic methods. Oral administration of the extracts and orlistat decreased in body weights, adipocytes size, levels of serum low-density lipoprotein (LDL), triglyceride (TG), leptin levels, lipase, tumor necrosis factor-alpha (TNF-alpha), interleukin-1 beta (IL-1 beta), and increased levels of serum high-density lipoprotein (HDL), adiponectin. According to RT-PCR analysis, the extracts reduced the levels of key transcription factors in adipogenesis and fatty acid synthase (FAS). Bioactivity-guided fractionation studies led to isolation of active compounds as syringin, cimidahurinin, astragalin, afzelin, lupeol, and psi-taraxasterol. In conclusion, CB, CN, CS and their isolated compounds were uncovered to be hopeful as a candidate for antiobesity therapeutics. (C) 2021 SAAB. Published by Elsevier B.V. All rights reserved.
Karyotype studies on the genus Origanum L. (Lamiaceae) species and some hybrids defining homoploidy
(Firenze Univ Press, 2020) Martin, Esra; Dirmenci, Tuncay; Arabaci, Turan; Yazici, Turker; Ozcan, Taner
In this study, chromosome numbers and structures of some Origanum L. taxa growing in Turkey were identified. Using the Image Analysis System, the complements of plant accessions belonging to eight sections, namely Amaracus (Gleditsch) Vogel, Anatolicon Benth., Brevifilamentum Ietsw., Longitubus Ietsw., Chilocalyx (Briq.) Ietsw., Majorana (Miller) Ietsw., Origanum, and Prolaticorolla Ietsw. were determined, by classification with the cytogenetic method. The chromosome number of all taxa except O. sipyleum L. (2n = 28) and O. rotundifolium Boiss. (2n = 28) is 2n = 30. In addition, the hybrids and their parental species have 2n = 30 chromosome numbers. Also, the smallest chromosome length is 0.32 mu m in O. sipyleum. The largest chromosome length is 2.02 mu m in O. minutiflorum O.Schwarz & P.H.Davis. The smallest total haploid length is 10.08 mu m in O. vulgare subsp. hirtum (Link) A.Terracc. and the largest value is 22.00 mu m in O. haussknechtii Boiss. The smallest mean length is 0.33 mu m in O. vulgare L. subsp. hirtum and O. saccatum P.H.Davis. The largest mean length is 0.74 mu m in O. sipyleum L. The chromosome numbers obtained in this study support the speciation of Origanum members via homoploid hybridization. Finally, the somatic chromosome numbers of 10 taxa (including 2 hybrids), chromosome measurements of 22 taxa (including 2 hybrids), and ideograms of 19 taxa (including 2 hybrids) were for the first time performed in this study.
Mericarp morphology of the genus Origanum (Lamiaceae) and its taxonomic, significance in Turkey
(Magnolia Press, 2020) Ecevit-Genc, Gulay; Ozcan, Taner; Dirmenci, Tuncay; Arabaci, Turan
Origanum is a well-known genus that is widely distributed and comprises many hybrids and endemic species in Turkey. Some morphological and molecular studies in the literature have aimed to clarify infrageneric or sectional classification of the genus. However, studies regarding the shape, size, and color of mericarps of Origanum taxa remain limited. The mericarp micromorphology of 30 taxa, including 7 hybrids of the genus Origanum, were evaluated herein using both stereo microscopy and scanning electron microscopy (SEM) to determine some useful features for taxonomical classification of the genus. The shapes of mericarps are usually ellipsoid, rarely ellipsoid-oblong, obovoid, broadly obovoid, while the color of mericarps vary from shades of brown to reddish. A significant variation was observed in the surface ornamentation of mericarps, which was mainly useful at the sectional and species level. Also determined were 2 main types: I and II, and 5 subtypes: pusticulate, reticulate-ruminate, reticulate-foveate, ruminate, and foveate. The micromorphological characters of mericarps, in addition to their morphological features, will contribute taxonomically to the classification of the sections of the genus Origanum and separation of the species within the sections. In addition, these characters will be useful to understand the effect of hybridization on variations in the micromorphological characters. This was the first detailed study on the mericarp micromorphology of the genus Origanum and its taxonomic implications.
Morphological character analysis in Turkish Micromeria Benth. (Lamiaceae) species with a numerical taxonomic study
(Tubitak Scientific & Technological Research Council Turkey, 2010) Arabaci, Turan; Dirmenci, Tuncay; Celep, Ferhat
As an initial part of a revisional study based on the genus Micromeria Benth. (Lamiaceae), extensive field studies, herbarium and literature surveys, and multivariate analysis have been conducted. Recently, many morphological and molecular studies have been conducted on the genus Micromeria and related genera. Consequently, the generic boundaries of Micromeria have dramatically changed. Therefore, a morphometric analysis was carried out on Turkish Micromeria s.l. species, belonging to sect. Micromeria, sect. Cymularia Boiss., and sect. Pseudomelissa Benth., 2 Clinopodium L. species, and 2 Mentha L. species in order to understand their taxonomic relationship. For morphometric analysis, 27 morphological characters and their states were investigated by means of MVSP software. Our results supported previous molecular studies. The members of the sect. Pseudomelissa should be transferred to the genus Clinopodium. Turkish Micromeria species are now represented by 8 species belonging to sect. Micromeria and sect. Cymularia. In addition, the taxonomic position of Micromeria cymuligera Boiss. & Hausskn. (sect. Cymularia) is discussed. The most important diagnostic characters of the Micromeria species such as leaf and calyx are illustrated.
Morphological, cytological, palynological and molecular evidence on two new hybrids from Turkey: an example of homoploid hybridization in Origanum (Lamiaceae)
(Magnolia Press, 2018) Dirmenci, Tuncay; Ozcan, Taner; Yazici, Turker; Arabaci, Turan; Martin, Esra
Two new hybrids of Origanum, O. x malyeri and O. x sevcaniae, are described and illustrated in detail. The general morphology, pollen and chromosome features, and nuclear (ITS) and chloroplast (rp132) genomes of collected specimens were studied. Origanum xmalyeri is a hybrid between O. boissieri and O. vulgare subsp. hirtum and O. xsevcaniae is another hybrid between O. vulgare subsp. hirtum and O. vogelii. These two new hybrids have some morphological intermediate characters between their parents. The pollen morphology of O. xsevcaniae and its parents were studied and documented in detail using light microscopy (LM) and scanning electron microscopy (SEM). O. xsevcaniae pollen is small to medium (P=18.49-21.03 mu m, E=22.20-26.63 mu m), suboblate (73%) to oblate (22%), the range of P/E ratio is from 0.73 to 0.85. Pollen grains are hexacolpate with granular membranes. Pollen grains were identified as bireticulate exine ornamentation with scanning electron microscopy examinations. The somatic chromosome number of O. boissieri, O. vulgare subsp. hirtum, O. vogelii, and O. x sevcaniae were counted as 2n = 30. Pollen characters and somatic chromosome numbers of O. x malyeri could not be examined because it has only female flowers and has not any nutlets. Also, according to molecular results, O. xmalyeri and O. x sevcaniae have some polymorphic nucleotide regions in their nuclear ITS genomes and which means they have two different DNA dataset belonging to their parents. Also, some individuals of O. x sevcaniae parents have single nucleotide polymorphism, too. These individuals live together with their hybrids and hybridization is probably a continuing process in that hybrid swarms. These present results support previous reports for the speciation of Origanum members via hybridization.
Morphological, karyological and phylogenetic evaluation of Cyclotrichium: a piece in the tribe Mentheae puzzle
(Tubitak Scientific & Technological Research Council Turkey, 2010) Dirmenci, Tuncay; Dundar, Ekrem; Deniz, Goerkem; Arabaci, Turan; Martin, Esra; Jamzad, Ziba
The genus Cyclotrichium, a member of the tribe Mentheae subtribe Menthinae (Lamiaceae, Nepetoideae), was analysed with respect to morphological revision, phylogenetic analysis, and cytogenetic properties. All species of the genus were investigated for morphological characters and ITS (internal transcribed spacers) of nrDNA sequence comparison (except C. hausknechtii for ITS). Six members of the genus were also analysed for chromosome numbers. The combined results strongly suggested that Cyclotrichium is a separate genus in Nepetoideae with distinct morphological, phylogenetic, and cytogenetic characteristics. For intrageneric phylogeny of Cyclotrichium, 3 groups were recognised: 1. C. niveum; 2. C. origanifolium; and 3. the remaining 6 species. Clinopodium s.l. and Mentha appear to be most closely related to Cyclotrichium. The phylogenetic relationship of Cyclotrichium with Clinopodium s.l., Mentha, Micromeria, Melissa, and Satureja is discussed. This is the first report on the somatic chromosome numbers of 6 Cyclotrichium species and phylogenetic analysis of Cyclotrichium based on (nrDNA) ITS sequences.
A New Record for the Flora of Turkey: Cirsium candelabrum Griseb. (Cirsium Sect. Cirsium, Asteraceae, Cynareae)
(Tubitak Scientific & Technological Research Council Turkey, 2009) Yildiz, Bayram; Dirmenci, Tuncay; Arabaci, Turan
Cirsium candelabrum Griseb. is reported for the first time from Thrace (Turkey). A description, including 2 photographs of the plant, and a map of its distribution in Turkey are presented.
Origanum L. (Ballıbabagiller / Lamiaceae) Cinsine Ait Yeni Bir Melez: Origanum × malatyanum Yıldız, Arabacı & Dirmenci
(2020) Arabacı, Turan; Dirmenci, Tuncay; Yıldız, Bayram
Öz: Bu çalışmada, Türkiye’den Origanum L. (Lamiaceae) cinsine ait yeni bir melez olan Origanum × malatyanum Yıldız, Arabacı & Dirmenci verildi. Yeni meleze ait örnekler Malatya ilinden toplandı. Yeni melez, ataları olan Origanum haussknectii Boiss. ve Origanum vulgare L. subsp. gracile (K.Koch) Ietsw. ile karşılaştırıldı. Melezin ayırt edici karakterleri, betimi, şekilleri ve dağılım haritası verildi. Ayrıca ata türler ile olan morfolojik farklılıkları tartışıldı. Yeni melezin gövde ve yaprak tüy durumu ve spiküllerin, bıraktelerin, çanak ve tacın şekli ve ölçüsü ile ebeveynlerinden farklılık gösterdiği belirlendi.
Physicochemical soil properties of genus Origanum (Lamiaceae) L. grown in Turkey
(2019) Arabacı, Turan; Yazıcı, Türker; Özcan, Taner; Dirmenci, Tuncay
Abstract: This study aimed to determine the physicochemical soil properties of genus Origanum L. (in Turkish: Mercanköşk) grown in Turkey. Soils samples were collected from 22 localities where the 24 Origanum taxa grown. Soiltexture, pH, electrical conductivity, CaCO3, organic matter, P, K, Cu, Fe, Zn, and Mn parameters were evaluated for eachsample. According to soil analysis the texture consists from clay, clay-loam or loam, pH value between 6.62 and 7.49,electrical conductivity (E.C.) is saltless or slightly salty, CaCO3 content among 0.08 % to 48.97 % and the amount oforganic matter were between 0.01 % and 11.54 %. The availability of P, K, Cu, Fe, Zn and Mn were determined low,medium, adequate or high level in the analyzed soils. The results are discussed with the previous studies.
Quantitative determination of some phenolics in Origanum laevigatum Boiss. extracts via validated LC-MS/MS method and antioxidant activity
(Acg Publications, 2018) Carikci, Sema; Kilic, Turgut; Ozer, Zuleyha; Dirmenci, Tuncay; Arabaci, Turan; Goren, Ahmet C.
In this study, quantities of some phenolics; caffeic acid, (E)-ferulic acid, rosmarinic acid, chlorogenic acid, fumaric acid, gallic acid, pyrogallol and vanillin in the directly methanol (M1), chloroform (C), acetone (Ac) and methanol (M2) extratcs obtained from Origanum laevigatum Boiss. from Turkey were investigated via liquid chromatography and tandem mass spectrometry (LC-MS/MS). Curcumin was used as an internal standard. Caffeic acid, chlorogenic acid, rosmarinic acid and gallic acid were determined as the most abundant phenolic acids in the studied extracts using LC-MS/MS. In LC-MS/MS measurements relative standard deviations (RSD %) for caffeic acid, (E)-ferulic acid, rosmarinic acid, chlorogenic acid, fumaric acid, gallic acid, pyrogallol and vanillin were found to be 8.04, 5.21, 5.45, 3.73, 5.44, 4.85, 5.47 and 6.57 % respectively. For the investigated analytes, the correlation coefficient was found in the range of 0.9803 to 0.9981. Furthermore, antioxidant properties of the extracts were determined based on 2,2-diphenyl-1-picrylhydrazyl (DPPH), beta-carotene linoleic acid and cupric (Cu2+) ion reducing power assay (CUPRAC). Acetone (Ac) and methanol (M2) extracts showed high activity in all test assays due to their high concentration of rosmarinic acid, caffeic acid and gallic acid in the extracts. (C) 2018 ACG Publications. All rights reserved.
A rearranged homoploid hybrid species of Origanum (Lamiaceae): O. xmunzurense Kit Tan & Sorger
(Taylor & Francis Ltd, 2019) Dirmenci, Tuncay; Ozcan, Taner; Acar, Mikail; Arabaci, Turan; Yazici, Turker; Martin, Esra
Origanum munzurense Kit Tan & Sorger (Sect. Brevifilamentum Ietsw.) was described by Kit Tan & Sorger in 1984, and it is an accepted species related to O. acutidens (Hand.-Mazz.) Ietsw. belonging to sect. Brevifilamentum. It is morphologically intermediate between O. acutidens and O. vulgare L. subsp. gracile (K.Koch) Ietsw., and its type locality lies in the overlap zone between the geographic distributions of these two taxa. We hypothesized that O. munzurense is in fact a hybrid between the two aforementioned taxa and we tested this hypothesis with the general morphology, chromosome features, and nuclear (ITS1-ITS2) and chloroplast (rpl32) DNA sequences of specimens of O. munzurense and its putative parental species, O. vulgare subsp. gracile and O. acutidens. The somatic chromosome number of O. munzurense, O. vulgare subsp. gracile and O. acutidens were counted as 2n=30. Origanum munzurense presented polymorphic sites in the nuclear ITS region, but the chloroplast markers did not allow us to identify the putative maternal of O. munzurense. Our results suggest that O. munzurense is indeed a hybrid, and its rearrangement as a new homoploid hybrid (O. xmunzurense) would be more accurate. These present results support previous reports for the speciation of Origanum members via hybridization.
Screening of Chemical Composition, Antioxidant and Anticholinesterase Activity of Section Brevifilamentum of Origanum (L.) Species
(Acg Publications, 2017) Yilmaz, Hasibe; Carikci, Sema; Kilic, Turgut; Dirmenci, Tuncay; Arabaci, Turan; Goren, Ahmet C.
Six Origanum species, Origanum acutidens (Hand. -Mazz.) Ietsw. (OA), Origanum brevidens (Bornm.) Dinsm. (OB), Origanum haussknechtii Boiss. (OC), Origanum husnucan-baseri H. Duman, Aytac & A. Duran (OHB), Origanum leptocladum Boiss. (OL), Origanum rotundifolium Boiss. (OR), belonging to sect. Brevifilamentum were analyzed for their essential oil and phenolic components. For the essential oil analyses, GC-MS and GC-FID were used. Phenolic contents of the aerial parts of the chloroform, acetone, and methanol extracts were analyzed using LC-MS/MS. Antioxidant activity of the species was investigated by three methods; DPPH free radical scavenging activity, beta-carotene linoleic acid assays and CUPRAC assays. Also, acetyl and butyrylcholinesterase inhibition of the extracts were investigated. While the essential oil contents of the section Brevifilamentum showed difference in chemotype, the phenolic contents were found to be coumaric acids and derivatives. These groups were the most abundant components of the extracts. Especially rosmarinic acid was detected in high amounts in acetone and methanol extracts. OA had the best activity both in antioxidant and anticholinesterase assays.
A taxonomic revision of the genus Cirsium Mill. sect. Cirsium (Asteraceae: Cardueae) in Turkey
(Tubıtak scıentıfıc & technıcal research councıl turkey, ataturk bulvarı no 221, kavaklıdere, ankara, 00000, turkey, 2016) Yildiz, Bayram; Arabaci, Turan; Dirmenci, Tuncay; Kostekci, Serkan
In this study, the members of the genus Cirsium Mill. sect. Cirsium (Asteraceae: Cardueae) in Turkey are revised. The species C. eliasianum Kit Tan & Sorger is regarded as a synonym of C. frickii Fisch. & C.A. Mey. The name C. alatum subsp. alatum was misapplied for C. elodes M. Bieb. and C. elodes was misapplied in Turkey for C. subinerme Fisch. & C.A. Mey. In addition, two new hybrids, C.x prativagum Petr. and C. x woronowii Petr., are newly recorded for the flora of Turkey. The lectotype of C. pseudopersonata Boiss. & Balansa ex Boiss. subsp. kusnezowianum (Sommier & Levier) Petr. is designated here. As a result, the genus Cirsium is represented by 66 species (78 taxa) in Turkey, of which 17 species (27 taxa) belong to C. sect. Cirsium. In addition, an identification key of species, detailed morphological descriptions, color photographs, and images of useful distinguishing characters of all species are given.
Türkiye’den Yeni Bir Köygöçüren [Cirsium Mill. (Papatyagiller / Asteraceae)]Türü ve Cinsin Şüpheli Bir Türünün Yeniden Keşfi
(2020) Dirmenci, Tuncay; Duman, Hayri; Arabacı, Turan
Bu çalışmada, Türkiye’den Cirsium Mill. (Asteraceae) cinsi için yeni bir tür olan Cirsiumayasii H.Duman & Dirmenci tanımlandı ve cinsin şüpheli bir türü olan Cirsium aristatum DC.türünün varlığı yeniden keşfedildi. Cirsium ayasii türünün ayırt edici karakterleri verildi.Yeni türün yakın akrabaları, Cirsium aytachii H.Duman & R.R.Mill ve C. dirmilenseR.M.Burton ile farkları belirlendi. C. ayasii ve C. aristatum türlerinin betimi, bütün türlerinorta gövde yapraklarının ve kapitulumlarının özelliklerini gösteren fotoğrafları ile türlerindağılım haritası verildi. Ayrıca, yeni türün yakın akrabası olan türler ile olan morfolojikfarklılıkları tartışıldı.

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