Showing papers on "Typification published in 2000"
1 Jan 2000
TL;DR: A parameterfree graph-based clustering approach and an application in the domain of cartography, namely typification is presented, which implies that object clusters are preserved.
Abstract: The automatic analysis of spatial data sets presumes to have techniques for interpretation and structure recognition. Such procedures are especially needed in GIS and digital cartography in order to automate the time-consuming data update and to generate multi-scale representations of the data. In order to infer higher level information from a more detailed data set, coherent, homogeneous structures in a data set have to be delineated. There are different approaches to tackle this problem, e.g. model based interpretation, rule based aggregation or clustering procedures. In the paper, a parameterfree graph-based clustering approach and an application in the domain of cartography, namely typification is presented. Typification is a generalization operation needed in order to present a set of objects by a subset of representatives. In this way, a collection of objects can be represented by fewer objects in a symbolic representation. An important prerequisite for the legibility of detailed representation is that the structure is preserved. This implies that object clusters are preserved.
53 citations
34 citations
TL;DR: Thirty-one species or subspecies of Orobanche and one species of Cistanche have been confirmed as being present within the Flora iberica area but some others previously recorded appear to have been so erroneously.
Abstract: FOLEY, MJ.Y. (2001). Orobanchaceae in the "Flora iberica" area: new taxa, excluded taxa, and typification. Ana/es/ard. Bot. Madrid 58(2): 223-233. Two new Orobanche taxa are described: O. austrohispanica MJ.Y. Foley, and O. crinita Viv. var. occidentalis MJ.Y. Foley. Thirty-one species or subspecies of Orobanche and one species of Cistanche have been confirmed as being present within the Flora iberica area but some others previously recorded appear to have been so erroneously. In addition, Lathraea phelypaea L. {Cistanche phelypaea (L.) Cout.] and nine species of Orobanche (O. caryophyllacea Sm., O. cernua Loefl., O. elatior Sutton, O. gracilis Sm., O. ramosa L., O. reticulata Wallr., O. rosmarina Beck, O. schultzii Mutel y O. variegata Wallr.) are typified.
20 citations
TL;DR: The genus Hylodesmum is given, a later homonym of two earlier names, Podocarpium A. Braun ex Stizenb and Podocarium Unger, and new combinations in Hylodemum are proposed for 14 species and nine infraspecific taxa.
Abstract: Hylodesmum H. Ohashi & R.R. Mill (Leguminosae or Fabaceae, tribe Desmodieae), based on Desmodium sect. Podocarpium Benth. (=D. subgen. Podocarpium (Benth.) H. Ohashi), is a replacement name proposed here for Podocarpium (Benth.) Y.C. Yang & P.H. Huang published in 1979 for Chinese species belonging to the genus. The name it replaces, Podocarpium (Benth.) Y.C. Yang & P.H. Huang, is a later homonym of two earlier names, Podocarpium A. Braun ex Stizenb. (fossil Leguminosae or Fabaceae) and Podocarpium Unger (fossil Podocarpaceae) and it is also inadmissible under Art. 20.2. New combinations in Hylodesmum are proposed for 14 species and nine infraspecific taxa. A description of the genus is given as well as brief notes on the distribution of each taxon. Shuteria longipes Franch. and Desmodium duclouxii Pamp. are newly regarded as conspecific; the correct name for these in Hylodesmum is H. longipes. Notes on typification are given for several names.
18 citations
TL;DR: Morphological study reveals that there are four species of the genus Cressa, two in the Americas andTwo in the Old World, with differences occur in several organs, but leaf shapes are distinctive in two species C. nudicaulis and C. cretica.
11 citations
TL;DR: Aristolochia linearifolia, a local endemic of E Cuba, and A. stenophylla, restricted to SW Hispaniola, are closely related but distinct species even though they have sometimes been lumped together.
Abstract: Rankin Rodriguez, R. & Greuter, W.: Notes on Aristolochia linearifolia and A. stenophylla (Aristolochiaceae), a vicarious species pair from the Greater Antilles (Cuba and Hispaniola). — Willdenowia 30: 131–139. 2000. — ISSN 0511-9618. Aristolochia linearifolia, a local endemic of E Cuba, and A. stenophylla, restricted to SW Hispaniola (mainly Haiti, but here first reported from the Dominican Republic), are closely related but distinct species even though they have sometimes been lumped together. They are described, contrasted, and compared with their closest relatives, A. oblongata and A. chasmema. Typification is discussed. For A. linearifolia a lectotype is designated, after consideration of the notorious problems that are linked with the Cuban collections of Charles Wright, the discoverer of the species. The holotype of A. stenophylla was destroyed in 1943, and although duplicate material exists that was designated as lectotype, it is of a fragmentary nature, so that an epitype is designated i...
8 citations
TL;DR: Nomenclatural history of both taxa and an amended description with illustrations are given, and the variability, differentiation, ecology and distribution are discussed.
Abstract: Didymodon subandreaeoides (Kindb.) R.H.Zander, known to-date from north-western North America and the Beringian part of Arctic Russia, is identical to the earlier described European taxon Didymodon rigidulus subsp. andreaeoides (Limpr.) Wijk & Margad. (Grimmia andreaeoides Limpr.). Nomenclatural history of both taxa and an amended description with illustrations are given, and the variability, differentiation, ecology and distribution are discussed. The typification of all known synonyms is provided.
8 citations
1 Jan 2000
TL;DR: The nomenclatural type of Solidago litoralis Savi (Herb. Gen., PI) is to be confirmed as a distinct species known only for the North-Western Tyrrhenian sandy coasts between the mouths of Magra (Liguria) and Cecina (Tuscany) rivers.
Abstract: Summary The nomenclatural type of Solidago litoralis Savi (Herb. Gen., PI) is designated according to herbarium vouchers and bibliographic references examined. On the basis of morphological, distributional, ecological, and karyological aspects S. litoralis is to be confirmed as a distinct species known only for the North-Western Tyrrhenian sandy coasts between the mouths of Magra (Liguria) and Cecina (Tuscany) rivers. Its origin appears as very recent, possibly linked to the Holocene marine transgressions and to the genesis of the alluvial plains of Western Tuscany.
6 citations
1 Jan 2000
TL;DR: On the identity of Orthotrichum inclinatum, O. incanum and O. crenato-erosum (Musci, OrthotRichaceae), the discovery of duplicates of the original collections allowed identification and typification of these species.
Abstract: On the identity of Orthotrichum inclinatum , O. incanum and O. crenato-erosum (Musci, Orthotrichaceae). The discovery of duplicates of the original collections of Orthotrichum inclinatum C. Muell., O . incanum C. Muell. and O . crenato-erosum C. Muell., allowed identification and typification of these species. Orthotrichum inclinatum is conspecific with and is the oldest name for O . compactum Dus., while O . incanum is conspecific with and the correct name for O . crenato-erosum and O . bicolor Ther.
4 citations
TL;DR: This work accepts Engelmann 's designat ion as the earliest applicable binomial but accord it a change in status as Y.schottii Engelmann pro, sp.
Abstract: George Engelmann 's con cept of Y. schottii as a plant with short, stiff, ye llo w-gree n leaves has not been accepted by recent authors who apply the name to plants of southern Arizona with broad, flexible blue-green leaves. Interspecific hybrids among three yuc ca s present in the area , Y. baccata , Y. elata, and the wide, blue -green leafed plant are co mmo n. We bel ieve that Arthur SChOll'S co llec tions made in 1853 upon which Engelmann based his de scription are of hybrid origin. We accept Engelmann 's designat ion as the earliest applicable binomial but accord it a change in status as Y. x.schottii Engelmann pro , sp. and apply it as a co llective epithet to include all hybrids among the thre e species . We designate Schott 's unnumbered gathering in the Torrey Herbarium (NY) as lectotype. We consider that Y. schottii of authors is con specific with Y. madrensis Gentry of Chihuahua and Sonora , Mexico.
TL;DR: The recent publication of two major works on neotropical species of the genus Pavonia at almost the same time has resulted in discrepancies needing either correction or clarification.
Abstract: The recent publication of two major works on neotropical species of the genusPavonia at almost the same time has resulted in discrepancies needing either correction or clarification. These items result from priority considerations, conflicting typifications, and typographical and other errors in a few cases.
TL;DR: This work properly typified P. polyphyllum and compared it with P. gardneri in morphological features to understand the differences between these two species better.
Abstract: Ptychomitrium polyphyllum (Sw.) Bruch et al. is a common species in Europe (Brotherus, 1923, 1925; Smith, 1978) and also distributed in Madeira, the Azores in North Africa (Brotherus, 1925). It is similar to P. gardneri Lesq., which is distributed in Asia and North America (Cao & Vitt, 1994; Cao, Gao & Vitt, 1995; Cao & Koponen, 1997). In order to understand the differences between these two species better, we properly typified P. polyphyllum and compared it with P. gardneri in morphological features.
Journal Article•
TL;DR: Baikal planaria from genus Bdellocephala were typified using rDNA locus coding 5'--end domain of 18S ribosome RNA and a discovery of unique individuals that belong to new species was found.
Abstract: Baikal planaria from genus Bdellocephala were typified using rDNA locus coding 5'--end domain of 18S ribosome RNA. Five colour forms of 24 possible variants that differ in diapason 0-1.3% of genotype were determined by comparative analysis of nucleotide sequences. The authors use back colour--one of the most variable and typical character in the given group--to collect material for investigation. It allows to minimize the size of investigation sample and at the same time to cover maximum variability of Bdellocephala. One of the positive result of molecular typification of colour forms was a discovery of unique individuals that belong to new species. Karyological analysis of colour forms shows variations in chromosome numbers that divide planaria into 3 groups (2n = 20, 24, 26). Comparative analysis of morphological and ecological characters and karyotypes of some forms united by the same genotype allows to distinguish them as separate species. Criteria of modern phenetic system of Baikal planaria are discussed.
TL;DR: The following new combinations are needed to treat the taxa of Abrus within the Flora region in accordance with current nomenclatural rules.
Abstract: During the preparation of the treatment of Abreae (Fabaceae, Faboideae) for Flora Zambesiaca, taking into account the flora of Caprivi Strip, Botswana, Malawi, Zambia, and Zimbabwe, it became clear that the designation of a lectotype for Abrus melanospermus Hasskarl was needed. The following new combinations are needed to treat the taxa of Abrus within the Flora region in accordance with current nomenclatural rules.
Journal Article•
TL;DR: The genus Dittrichia (Asteraceae), distributed mainly in the Mediterranean area, is revised, of which two are new to science; they are D. graveolens, D. viscosa and D. maritima.
Abstract: The genus Dittrichia (Asteraceae), distributed mainly in the Mediterranean area, is revised. Herbarium and field investigations have shown that five species can be recognised, of which two are new to science; they are D. graveolens, D. viscosa, D. revoluta, D. orientalis and D. maritima. A formal taxonomical treatment is presented including correct nomenclature, typification, description, ecology and distribution.