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1.
Minuartia stolonifera, a serpentine endemic is described and contrasted with other related perennial species of the North Coast Ranges. A key to the perennial species ofMinuartia of the region is included.  相似文献   

2.
Taxonomic relationships amongst the genera of the southern African tribesPodalyrieae andLiparieae are discussed. Data gained from morphological, cytological and chemical investigations are analyzed cladistically to determine relationships. The genusCadia (tribeSophoreae) is included in the investigation to establish whether it should be transferred to thePodalyrieae. The results clearly indicate that thePodalyrieae andLiparieae are monophyletic and that they should be united, but thatHypocalyptus andCadia should be excluded. Within the monophyletic group, there are two distinct subclades each supported by three apomorphies. The results also show that there is a strong sister relationship betweenAmphithalea andCoelidium. In the taxonomic treatment theLiparieae are placed into synonymy under thePodalyrieae and two subtribes are recognized. A key to the genera in the tribe is given, followed by a synopsis of the genera.  相似文献   

3.
The new species Polycarpaea basaltica , from an area of basalt rocks at the coast of northern Somalia, is described and illustrated.  相似文献   

4.
Silene bitlisensis O.Tugay & Ertugrul from the Green Line Afforestation Zone (B9: Bitlis Province) is a new species described and illustrated here. It is closely related to S. caramanica Boiss. & Heldr. var. ilarslanii Aytaç & Dural, from which it mainly differs in its habit, leaf, and floral features.  © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society , 2008, 156 , 463–466.  相似文献   

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Cymopterus constancei is described as new from mostly western portions of Wyoming, Colorado, and New Mexico and from eastern Utah and Arizona. It has been confused withC. bulbosus A. Nelson but differs in several features of its bractlets, phenology, and habitat. The novelty is among the earliest of the native flora to bloom and is quite uniform morphologically. The number of collections encountered exceeds 200, a fourfold increase, in the past 22 years.  相似文献   

7.
A new species is described and illustrated from Central Anatolia: Acanthophyllum oppositiflorum Aytaç.  相似文献   

8.
Silene doganii A.Duran & Y.Menemen sp. nov. from the Amanos Mountains (C6: Osmaniye-Turkey) is described and illustrated. It is closely related to S. caramanica Boiss. & Heldr., from which it differs mainly in its habit, hairiness, leaf and floral features.  © 2003 The Linnean Society of London, Botanical Journal of the Linnean Society , 2003, 143 , 109−113.  相似文献   

9.
Heliosperma oliverae Niketić & Stevanović is described from Mt. Prokletije in south-west Serbia and north-east Montenegro, together with an estimation of its ecological preferences and International Union for Conservation of Nature and Natural Resources (IUCN) threat status. A map and illustration are provided. It is compared with seven closely related Balkan endemic taxa: H. macranthum Panić, H. retzdorffianum K. Malý, H. tommasinii Vis., H. insulare Trinajstić, H. chromodontum (Boiss. & Reuter) Juratzka, H. intonsum (Greuter & Melzh.) Niketić & Stevanović, and H. nikolicii (Seliger & T. Wraber) Niketić & Stevanović. An amended key to species and a table showing differences from the related Balkan taxa are also provided.  © 2007 The Linnean Society of London, Botanical Journal of the Linnean Society , 2007, 154 , 55–63.  相似文献   

10.
Minuartia decumbens, a serpentine endemic resembling the members of theMinuartia nuttallii-M. rosei complex, is described, illustrated and contrasted with the complex.  相似文献   

11.
The Apteranthes europaea complex (Apocynaceae–Asclepiadoideae–Ceropegieae–Stapeliinae) distributed from Morocco/southern Spain along the North African coast of the Mediterranean Sea up to Sinai, Negev and southern Jordan is studied with emphasis on stem and flower morphology by SEM, chromosome sizes and flavonoid compounds. Apteranthes europaea was found to be rich in rather uncommon flavone glycosides. Of these, luteolin 4'-neohesperidoside represents the major flavonoid of all samples; luteolin-3'- O -(6'- O -sinapoylglucoside)-4'- O -neohesperidoside and luteolin-3'- O -(6'- O -feruloylglucoside)-4'- O -neohesperidoside are reported here for the first time. Flavonol glycosides also occur, but in much smaller quantities. The different flower morphs, variation in stem and corolla epidermal structures, slight variations in the length of the 2 n  = 22 chromosomes and in quantitative flavonoid composition are taxonomically best reflected by subdividing the complex into a western var. europaea (Europe and Africa) and an eastern var. judaica (Sinai, Arabia).  © 2005 The Linnean Society of London, Botanical Journal of the Linnean Society , 2005, 149 , 419–432.  相似文献   

12.
Hierarchical patterns inSilene sect.Sedoideae were investigated using random amplified polymorphic DNA (RAPD), nucleotide sequences of the internal transcribed spacer (ITS) regions of the 18S–28S nuclear ribosomal DNA, and discrete morphological characters. All data sets firmly supported the species recognized. The RAPD data offered the best resolution at the intraspecific level, supporting the current intraspecific classifications ofS. sedoides andS. integripetala. The ITS sequences and the morphological data gave poor resolution within species, and the three data sets disagreed about the relationships among species. The signal from the RAPD data was strongest and remained when the total data set was analysed. The three data sets all support an amphiploid origin ofS. aegaea, with the strongest evidence from the ITS sequences. Incongruences among data sets as well as merits and shortcomings of each are discussed. The robustness of the results can be evaluated using perturbations of data, i.e., bootstrap and jackknife of taxa and characters. These methods should not be taken as methods of statistical inference at the taxonomic level, because unbiased sampling appears impossible. RAPD data, however, come close to being suitable for statistical estimation of hierarchies at the genome level, but several methodological problems have to be solved.  相似文献   

13.
This study focuses on karyological investigation of four taxa of Dianthus (Caryophyllaceae) including D. crossopetalus, D. orientalis subsp. stenocalyx, D. orientalis subsp. gorganicus, and Dianthus sp. distributed in Northeast of Iran. The karyotype asymmetry/symmetry was evaluated using two methods: 1) CVCL (coefficient of variation of chromosome length) and CVCI (heterogeneity of the centromeric index); and 2) MCA (mean centromeric asymmetry). The karyotype asymmetry was also used to investigate the relationships among the taxa. Results obtained from the current study revealed that there are two different ploidy levels (2n = 2x = 30 and 2n = 4x = 60) among the investigated taxa. The indices CVCL and MCA described karyotype asymmetry correctly based on variation in chromosome length. Diagram of CVCL vs. MCA seems to be appropriate for karyological delimitation and taxonomic relationships among the Dianthus taxa under study. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)  相似文献   

14.
Dianthus aytachii C.Vural from Mount Erciyes, central Anatolia (Turkey) is described and illustrated. It is considered to be endemic to Mount Erciyes. The morphological differences from the closely related species Dianthus zederbaueri Vierh. are discussed. The World Conservation Union (IUCN) threat category and observations on the ecology of the populations are noted. The pollen and seed morphology of D. aytachii and D. zederbaueri were examined by light microscopy and scanning electron microscopy. The geographical distribution of the new species is mapped. © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society, 2008, 158 , 55–61.  相似文献   

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Plant Cell, Tissue and Organ Culture (PCTOC) - Satureja khuzitanica, due to having phenolic compounds such as carvacrol in its essential oil and rosmarinic acid in its extract has strong...  相似文献   

18.
Silene oenotriae a new species of S. sect. Siphonomorpha is described and illustrated. It is a rare chasmophyte growing on limestones along the gorges of southern slope of Mt. Pollino (S Italy). Its relationships are discussed.  相似文献   

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Study of floral anatomy, micromorphology, palynology and onotogeny has revealed new characters for phylogenetic analysis in the genus Scleranthus . Cladistic analysis of these characters, along with those previously available, suggests that the genus consists of Eurasian/Mediterranean and Australasian sister clades. Gynoecial morphology and development are closely similar in all species, suggesting the genus is monophyletic despite its disjunct northern and southern hemisphere distribution. Variation in pollen:ovule ratios and their implications for the evolution of Scleranthus species are also discussed and it is concluded that a range of breeding strategies intermediate between autogamy and xenogamy exists in the genus. Single-stamened species of Scleranthus are likely to be obligate autogams, despite their comparatively high pollen:ovule ratios in relation to autogamic species of other genera.  © 2002 The Linnean Society of London, Botanical Journal of the Linnean Society , 2002, 140 , 15–29.  相似文献   

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