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Based on personal collections ofGlobba unifoliaRidl. andG. unifolia var.sessilifloraHoltt., the latter is recognized as a distinct species. As the nameG. sessiliflora is already occupied, the nomen novumG. corneri is proposed in honour of Prof. DrE. J. H. Corner, who was the first collector of the plant.Dedicated to Prof. DrE. J. H. Corner (Cambridge) on the occasion of his 85th birthday on January 12th, 1991.  相似文献   

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Rosularia globulariifolia (Fenzl) A. Berger and R. pallidiflora (Holmboe) Meikle were originally described as species in Umbilicus DC. in 1842 and 1914, respectively. In the present study, morphological and palynological features were examined in detail to determine the status of these taxa. The general characteristics, seed structure and micromorphology, pollen measurements and pollen characteristics were established. Morphologically, the two taxa cannot easily be distinguished. Pollen grains of both species are tricolporate, subspheroidal and eutectate, ornamentation is psilate and exine structures are similar. Based on morphological and palynological similarities, and the fact that both taxa are found in the same habitats, we propose that R. pallidiflora should be reduced to the rank of variety as Rosularia globulariifolia (Fenzl) A. Berger var. pallidiflora (Meikle) Minareci & K. Yildiz comb. et stat. nov.  相似文献   

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Mastophoropsis canaliculata (Harvey in Hooker) gen. et comb. nov. (Corallinaceae, Rhodophyta) is restricted to south-eastern Australian waters. It is unique among Corallinaceae in possessing an erect, tenacular, branched, taeniform, non-geniculate thallus which produces multiporate tetrasporangial conceptacles. Based on a detailed morphological and anatomical study, including an examination of the designated lectotype, this taxon is referred to the tribe Phymatolitheae in the subfamily Melobesioideae and its relationships to other non-geniculate Corallinaceae are discussed. A simplified microtechnique procedure involving decalcification with nitric acid, resin embedding and staining serially mounted sections with KMnO4 also is outlined. X-ray microanalysis of surface tissues indicates that calcification occurs largely as CaCO3 and that various structures contain substantially differing amounts of Ca.  相似文献   

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The anatomy of the Architectonicidae is described. The family combines prosobranch and pentaganglionate (=euthyneuran) traits, but has evolved in a very specialized way as cnidaria-feeders. There is no close relationship to the Epitoniidae, and the taxon 'Heterogastropoda' is regarded as artificial. The closest relatives of the Architectonicidae are the Mathildidae and the Pyramidellidae, all united in a taxon Allogastropoda. This taxon is regarded as a connecting link between basal marine Caenogastropoda and the most primitive Pentaganglionata (e.g. Acteon, Ringicula ). The relationships of the Architectonicidae to the Rissoellidae and Omalogyridae are briefly discussed.  相似文献   

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Abstract

Nototorchus nom. nov. and Paratorchus nom. nov. are proposed as replacement names for Nototrochus McColl, 1982 and Paratrochus McColl, 1982, which are pre-occupied in Coelenterata and Mollusca respectively.  相似文献   

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<正>INTRODUCTION Anthostomella rostrispora W.H. Hsieh, C.Y. Chen & Sivan. [as rostrospora] was described by Hsieh et al. (1975) and was accepted in the world monograph of the genus Anthostomella Sacc.  相似文献   

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W. Hempel 《Feddes Repertorium》1971,81(10):657-686
This work presents an investigation of the author on the systematical position of Melica uniflora Retz. and Melica rectiflora Boiss. et Heldr. The author proves the affinity of these Melica-species to those of the pacific-northamerican territories. The usefulness of striking characteristic features or signs (e. g.: the cilia (fringes) and the awns of the glumelles) is examined in respect to their taxonomic value; and the corresponding literature is discussed. The author proves that certain characteristic signs, hardly or not yet being noticed till now, play a decisive role in respect to the explanation of the affinity between the species Melica L.; the probative force of these features will not become evident but by comparison of the taxa of all continents. Following the author, the storage internodes, the formation of antiligula in front of the leaf-base, and the dynamics in the ontogeny of the elements of the spikelets (glumes) are thought to be very important characteristics of organization. The author compares these features these with their formation within the range of sub-genus Melica. As a result of this research, the new sub-genus Bulbimelica is described and its systematical classification is given. The new subgenus is furthermore more exactly separated from the subgenus Melica. The classification is followed by chorological interpretation as well as by indications to the ecology of the taxa and the distribution of diagnostically important signs within the whole generic distribution-area.  相似文献   

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A multi‐gene (SSU, LSU, psbA, and COI) molecular phylogeny of the family Corallinaceae (excluding the subfamilies Lithophylloideae and Corallinoideae) showed a paraphyletic grouping of six monophyletic clades. Pneophyllum and Spongites were reassessed and recircumscribed using DNA sequence data integrated with morpho‐anatomical comparisons of type material and recently collected specimens. We propose Chamberlainoideae subfam. nov., including the type genus Chamberlainium gen. nov., with C. tumidum comb. nov. as the generitype, and Pneophyllum. Chamberlainium is established to include several taxa previously ascribed to Spongites, the generitype of which currently resides in Neogoniolithoideae. Additionally we propose two new genera, Dawsoniolithon gen. nov. (Metagoniolithoideae), with D. conicum comb. nov. as the generitype and Parvicellularium gen. nov. (subfamily incertae sedis), with P. leonardi sp. nov. as the generitype. Chamberlainoideae has no diagnostic morpho‐anatomical features that enable one to assign specimens to it without DNA sequence data, and it is the first subfamily to possess both Type 1 (Chamberlainium) and Type 2 (Pneophyllum) tetra/bisporangial conceptacle roof development. Two characters distinguish Chamberlainium from Spongites: tetra/biasporangial conceptacle chamber diameter (<300 μm in Chamberlainium vs. >300 μm in Spongites) and tetra/bisporangial conceptacle roof thickness (<8 cells in Chamberlainium vs. >8 cells in Spongites). Two characters also distinguish Pneophyllum from Dawsoniolithon: tetra/bisporangial conceptacle roof thickness (<8 cells in Pneophyllum vs. >8 cells in Dawsoniolithon) and thallus construction (dimerous in Pneophyllum vs. monomerous in Dawsoniolithon).  相似文献   

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From a cupressaceous wood described by Kräusel & Schönfeld (1974) of the Tertiary of South-Limburg (Netherlands) Greguss (1970) selected such pieces showing remains of insect food. In a recent Callitris species from Australia he found the some phenomenon (1970). Indeed Greguss considered these phenomena as a natural specific wood element. Really these are pith flecks are caused by a cambium-mining insect. Both are described in the present paper. I name the pith flecks in the fossil coniferous wood of South-Limbourg Protophytobia cupressorum gen. nov., sp. nov. Under such name is considered an insect only represented by their characteristic food channals. In living angiospermous woods Phytobia Lioy (Agromyzidae, Diptera) is the only genus hitherto known. In coniferous woods recent species are unknown. The food channals in conifers in great part closed by changed tracheids.  相似文献   

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Recently, the genus name Brandtia Hoshina was given for a chlorellacean symbiotic alga residing in some ciliate species. However, it was found that Brandtia Hoshina 2017 is an illegitimate later homonym of Brandtia Kunth 1831. Therefore, a replacement name, Carolibrandtia nom. nov., for Brandtia Hoshina is here proposed.  相似文献   

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Based on epilithic diatom samples collected from the rocky littoral zone of Lake Malawi (102 diatom taxa belonging to 34 genera were listed in the Supporting Information) we proposed the transfer of three taxa to new genera. Afrocymbella brunii (Fricke) comb. nov. was transferred from Gomphonema because of its dorsiventral valve and its transapically elongated dorsal stigma. Afrocymbella rossii (Kociolek & Stoermer) comb. nov. was also transferred from Gomphocymbella, which is actually a synonym of Gomphonema. Aulacoseira euareolata (O.Müller) comb. nov. et nom. nov. was transferred from Melosira because of the presence of linking spines and mantle areolae, and its specific epithet was replaced because of homonymy with Aulacoseira areolata Moisseeva.  相似文献   

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