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1.
Cellulomonas cartalyticum was found to contain a peptidoglycan type different from that of the other species ofCellulomonas. The diamino acid is lysine instead of ornithine and the interpeptide bridge consists ofd-Asp-d-Ser. The same peptidoglycan type occurs inCorynebacterium manihot, Brevibacterium liticum andArthrobacter luteus. These non cellulolytic organisms are most likely not closely related withCellulomonas cartalyticum, as indicated by the very different G+C content of their DNA, although they formed a narrow cluster includingC. cartalyticum when numeric taxonomical methods were applied. 相似文献
2.
John M. Malinky 《Pal?ontologische Zeitschrift》2006,80(1):88-106
Topotype specimens of the Middle OrdovicianHyolithes acutus
Eichwald, 1840, which is the type of the genus that lent its name to a family, order, class, and even phylum according to some, andH. latus
Eichwald, 1860 allow that genus and those species to be firmly established on a sound, morphologic basis. In addition, preservation
of the types ofHyolithes striatus
Eichwald, 1860 is sufficiently good to warrant reassignment toDorsolinevitus
Syssoiev, 1958. In contrast, the type ofH. insularis
Eichwald, 1860 is incompletely preserved, and this species is not recognizable beyond the type material. The concept of the family
Hyolithidae is revised to more closely conform to the morphology ofHyolithes, with authorship herein ascribed toSyssoiev (1958) rather than toNicholson (1872). The stratigraphic distribution of these taxa suggests thatHyolithes as defined herein first appears in the Middle Ordovician, but extends into at least the Lower Devonian, as suggested by two
species from the Barrandian region of the Czech Republic. Their geographic distribution further re-enforces the notion of
two distinct paleobiogeographic provinces based on hyoliths, a Mediterranean province and Baltic province, with almost no
mixing of hyolith faunas during the Ordovician.
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3.
Focko Weberling Hermann Lörcher Evelyn Böhnke 《Plant Systematics and Evolution》1980,133(3-4):261-283
TheSimaroubaceae generally have no true stipules. The stipule-like appendages of some genera proved to be pseudo- or metastipules (Weberling & Leenhouts 1965). There seem to be some exceptions, however: the generaCadellia (incl.Guilfoylia) andRecchia on the one hand, and theIrvingioideae on the other. As these taxa, with exception ofRecchia, have simple leaves, there are no indications that their stipule-like appendages might be pseudo- or metastipules. In regard to their position and ontogeny these appendages behave completely like true stipules. Assuming the view ofForman, one could conceive a morphological line from the long, broadly inserted axillary stipules of mostIrvingioideae to the small scaly triangular stipules ofIxonanthoideae. The similarities between the stipules ofIrvingioideae andErythroxylaceae (already emphasized byHallier and others), become even more evident when their ontogeny is investigated. TheIrvingioideae, therefore, might be regarded as a separate family (perhaps with some relation to theErythroxylaceae,Hallier) or as a subfamily ofIxonanthaceae (Forman).—In addition to data on stipules some results on the palynology and shoot anatomy of the generaCadellia (incl.Guilfoylia) andRecchia are reported. Their relationship with theSimaroubaceae also appears doubtful. If they are to be included, they represent a somewhat isolated group near the base of the family which otherwise has lost its stipules.
Herrn Univ.-Prof. Dr.Walter Leinfellner zum 70. Geburtstag gewidmet. 相似文献
4.
Ernst Vitek 《Plant Systematics and Evolution》1982,139(3-4):319-322
The following new hybrids are described:Euphrasia ×dilata = E. hirtella
Jordan exReuter ×alpina
Lam.;Euphrasia ×trikoviana = E. tricuspidata L. ×rostkoviana
Hayne. The chromosome number ofEuphrasia tricuspidata L. has been established for the first time: 2n = 22. 相似文献
5.
Josef Hafellner 《Plant Systematics and Evolution》1977,128(3-4):209-214
Karschia destructans
Tobler is recognized as a synonym ofBuellia schaereri
De Not. This species is not a parasitic fungus but a lichen that suffers when growing together withChaenotheca chrysocephala (Ach.)Th. Fr. orChaenotheca phaeocephala (Turn.)Th. Fr. subsp.alpina (Nádv.)Schmidt.
Karschia destructans: Falsch interpretierte Beziehungen zwischen zwei Flechten相似文献
6.
The pseudanthia ofHeliopsis scabra andRudbeckia vulgaris (Asteraceae) were examined during the anthesis for differences in their UV patterns. Distinct changes in the reflectance and absorbance properties could be observed. The results suggest a close correlation between different stages of floral development and pollinator attraction.
Herrn Prof. Dr.Lothar Geitler zum 90. Geburtstag gewidmet. 相似文献
7.
Helene Schiman-Czeika 《Plant Systematics and Evolution》1988,158(2-4):283-288
The phycobiont of all species ofLempholemma analyzed is attacked by haustoria. The haustoria of these five species ofLempholemma and of two species with unknown apothecium but with a thallus quite similar toLempholemma are described. They show distinct morphological and functional characters which allow species delimitation.
Frau Prof. Dr.Elisabeth Tschermak-Woess zu ihrem 70. Geburtstag gewidmet. 相似文献
8.
Maria Waha 《Plant Systematics and Evolution》1984,147(3-4):189-203
Viscin threads and other pollen connecting threads of some angiosperm families were investigated, especially those ofEricaceae. According to the definition adopted, viscin threads are ± long exinous processes which consist of exinous material and connect pollen grains or tetrads. Such viscin threads are found within theOnagraceae, Caesalpiniaceae, Ericaceae, andMimosaceae only. While they differ in structure and composition, they always consist of sporopollenin and exhibit a very strong stickiness, even after all viscid substances have been removed by acetolysis. In contrast, the pollen connecting scleroprotein threads ofOrchidaceae and the cellular threads ofStrelitzia reginae
Aiton. (Musaceae) are not connected with the exine surface, are destroyed by acetolysis, and thus do not correspond to viscin threads. 相似文献
9.
Population variability ofOphrys holosericea (Burm. f.)Greut. subsp.holosericea (=O. fuciflora
Crantz subsp.fuciflora) from near Vienna (Austria), and of subsp.maxima (Fleischm.)Greut. andO. cornuta
Steven with intermediates from the Dalmatian island Hvar (Yugoslavia) was analysed and illustrated by scatter diagrams. A hybrid origin of these intermediates is suggested. Aspects of hybridization betweenO. holosericea agg. andO. scolopax agg. are discussed. 相似文献
10.
Karl Carniel 《Plant Systematics and Evolution》1980,133(3-4):301-307
In electron micrographs ofLupinus polyphyllus nuclei some of the chromocentres exhibit two distinct regions, a network-like (NR) and a banded one (GR). This heterogeneous type of chromocentres was observed in nearly all cells of vegetative and reproductive tissues (root, leaf primordium of the seedling, young and older foliage leaves, carpel, young and older ovules and pericarp), with the exception of pollen mother cells during the first meiotic division. Results of enzymatic digestion show that GR and NR mainly consist of DNA. These observations suggest that GR and the polycomplexes represent different nuclear phenomena.
Herrn Univ.-Prof. Dr.Walter Leinfellner zum 70. Geburtstag gewidmet. 相似文献
11.
Reinhard Doll 《Plant Systematics and Evolution》1975,123(3):199-212
A new triploid microspecies ofTaraxacum from sect.Erythrocarpa is described:Taraxacum erzincanense
Doll. In addition, 2x 3x, and 4x chromosome numbers, pollen conditions and chorological facts are reported for serveral other rare Oriental microspecies. 相似文献
12.
Franz Speta 《Plant Systematics and Evolution》1979,132(1-2):1-26
In 83 species of the familiesMonotropaceae, Apocynaceae, Oleaceae, Scrophulariaceae, Lentibulariaceae, Bignoniaceae, Martyniaceae, Myoporaceae, Verbenaceae, Lamiaceae, Campanulaceae, andLiliaceae, protein bodies in the cell nuclei have been found, in 68 of these species for the first time. On the basis of their structure in accordance with morphological characters the generaBurgsdorfia, Hesiodia, Olisia, andPhlomoides of theLamiaceae are accepted;Lamium is divided intoLamium, Lamiastrum andOrvala; two new combinations are established:Kickxia campyloceras (Rech. fil. &Esfandiari)Speta andEtornotus papilionaceus (Burm. in L.)Speta. Deviating shape or lack of protein bodies corroborate former taxonomic decisions, e.g. the transfer ofMonotropa toMonotropaceae or the separation ofGaleopsis andLadanum; Veronica schmidtiana should not be included inPseudolysimachion. Systematic affinities are discussed primarily withinScrophulariaceae because nuclear protein bodies have been studied already in many species of this family. ForCampanula patula two 2 x populations are reported.
Herrn Professor Dr. L.Geitler zum 80. Geburtstag gewidmet. 相似文献
13.
An electron microscopical investigation of the cell walls in young antheridia ofPolypodium crassifolium andPlatycerium alcicorne confirms the classical developmental model as postulated byStrasburger and byKny. The structure of the basal cell walls, both of the funnel cell and of the operculum, and especially the evidence of plasmodesmata in those walls, disprove the widely accepted interpretation presented 1951 byDavie.
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14.
Statistical population analyses have been carried out on so-calledOphrys arachnitiformis, partly sympatricO. sphecodes s. l. as well as on other species ofOphrys (O. holosericea, O. exaltata, O. apulica, O. cornuta, O. biscutella, O. bertolonii, O. bertoloniiformis.). Altogether 63 populations with 521 individuals were studied in regard to 54 morphological parameters. — It can be shown thatO. arachnitiformis is an extremely heterogeneous assemblage which includes taxa of most diverse origin, different degrees of stability and nomenclatorial rank. Only common trait is their very diverse relationships withO. specodes s.l.—The basionymO. arachnitiformis
Gren. & Phil. refers to a colour variant ofO. sphecodes
Mill. subsp.sphecodes only, and is not applicable to other segments of the assemblage.A late flowering, morphologically and biologically well isolated group of populations from southern France without any perceptible hybrid influence is established as a new species:Ophrys splendida
Gölz & Reinhard. Populations from north and central Italy with distinct characters but hybrid influences fromO. holosericea/O. exaltata are calledO. tyrrhena
Gölz & Reinhard.O. morisii, an endemic to Sardinia, represents an independent species of still obscure evolution. The hybrid interpretation ofO. catalaunica is statistically corroborated, but somewhat modified. For the remaining segments ofO. arachnitiformis investigated (from Castilia, Dalmatia, and the Monte Gargano) no formal taxonomic proposals are made, but some suggestions about their genesis are possible. 相似文献
15.
Dr. Klaus-Peter Kolbe 《Plant Systematics and Evolution》1982,140(1):39-55
The serological investigations support the opinion ofJanchen (1942) to combine the generaBunias, Isatis, andSisymbrium in the tribeSisymbrieae; Cheiranthus, Erysimum, andMatthiola in the tribeHesperideae; andBrassica, Crambe, Sinapis, andSuccowia in the tribeBrassiceae. They further underline the central position of theSisymbrieae and the isolated position of theHeliophileae. In accordance withEigner (1973) theBrassiceae are placed closer to theSisymbrieae than inJanchen; the same holds for thePringleeae. No serological justification could be found to uniteArabis andBarbarea in the tribeArabideae, andAlyssum andLunaria in theAlysseae. From the antigen-systems used among the representatives ofJanchen's
Lepidieae the generaLepidium andNeslia show remarkable correspondence both toCamelina andThlaspi, but not toCochlearia which appears distant fromCamelina andThlaspi also.
Teil 1/Part 1. 相似文献
16.
Michael Schlirf 《Pal?ontologische Zeitschrift》2002,76(2):331-338
The ichnospeciesBolonia lata
Meunier, 1886 is a straight, bilobate trace fossil with a somewhat heart-shaped outline in cross-section. It has previously been
reported from various localities mainly from the Jurassic by different authors under various names such asGyrochorte, Scolicia, orProtovirgularia. Because none of these previous determinations fully agrees with the trace fossils’ morphology, the ‘forgotten name’ is reintroduced,
and due to a lack of type material a neotype from the type area of Boulonnais, France is proposed. The ichnogenus is currently
represented only by one ichnospecies,B. lata
Meunier, 1886. Diagnostic criteria ofBolonia and morphologically related trace fossils such asScolicia, Gyrochorte, Bichordites, “Taphrhelminthopsis nelsoni”, andProtovirgularia are discussed, the synonymy ofB. lata is provided and finally a discussion on the possible producer ofBolonia is given.
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17.
Elisabeth Tschermak-Woess 《Plant Systematics and Evolution》1979,131(3-4):179-192
Under certain conditions inBotrydiopsis alpina stacks of chloroplasts are formed. They consist of up to 8 elements. In contrast to what is known from other algae in zoosporangia of this species and ofHeterococcus caespitosus, stigmata are formed in early developmental stages. They are reproduced together with the chloroplasts, in which they occupy a position at the edge and near the existing or future incision. At the side of the old stigma a new one is formed, and partitioning of the chloroplast between these two leads to their distribution to the daughter chloroplasts. Young daughter cells in the zoosporangia ofBotrydiopsis alpina contain one chloroplast which undergoes a last unequal division giving rise to one astigmate and usually somewhat smaller and to one stigmate chloroplast. In both species the capacity for locomotion may be suppressed, the presumptive zoospores thereby becoming aplanospores. Autospores in the proper sense were not observed. Their development quite generally is different from that of aplanospores (and zoospores), and both types of spores should be distinguished.
Herrn Professor Dr.Lothar Geitler zum 80. Geburtstag in Verehrung gewidmet. 相似文献
18.
K. H. Rechinger 《Plant Systematics and Evolution》1982,141(1):81-84
Saponaria stenopetala sp.n. in Eastern Afghanistan is close toS. pachyphylla
Rech. f. andS. subrosularis
Rech. f.—The nearest allies ofS. makranica sp.n. from Western Pakistan and Southeastern Iran areS. kermanensis
Bornm. andS. floribunda (Kar. & Kir.)Boiss.
Flora Iranicae praecursores 36–37. — Praecursores praecurrentes in Pl. Syst. Evol.139, 313–317 (1982). 相似文献
19.
Eberhard Baumann 《Plant Systematics and Evolution》1978,130(1-2):43-52
A report is given on about 1000 specimens of 28 species ofPhorinae and their occurrence on 12 species ofUmbelliferae. Collections were made in a variety of habitats ranging from the German North Sea coast up to altitudes of 2500 m in the Western Alps. The morphology of the mouth-parts of the flies and their behaviour on the umbels are discussed briefly. No specific adaptations exist between Phorid flies and the visited umbels; their relationship is mutualistic. Climate and altitude have a greater influence on frequency and diversity of these visitors than the host-plants themselves. Visitors frequency and diversity increases with altitude.
Rennfliegen (Phoridae/Diptera) als Blütenbesucher, II. — Vgl. dazuBaumann (1978a). 相似文献
20.
(1) The ability to produce cephalodia is usually a genus-specific character in lichens. (2)Lecidea shushanii
Thoms., is a member of the genusTephromela, closely related toT. aglaea. It is not clear, whether or not the cephalodia of this taxon are true cephalodia or colonies of epiphytic cyanobacteria and whether or notLecidea shushanii is an independent species. (3)Lecidea dovrensis
Nyl., is, in contrast to the traditional concept, not conspecific withLecidea alpestris
Sommerf., but an earlier name forLecidea pallida
Th. Fr. (4)Lecidea dovrensis is described in some detail. Chemically the species is characterized by the presence of isousnic acid (previously unknown in lecideoid lichens). It is restricted to areas north of the 60th parallel with an oceanic climate. (5) In connection with the attempt to clarify the taxonomic relationships ofLecidea dovrensis, figures of ascus apical structures of the following species are given (marked by an asterisk are genera where we found discrepancies with published data):Austrolecia antarctica, Catillaria chalybeia, Lecidea alpestris, L. caesioatra, L. limosa, Lecidoma demissum, Koerberiella wimmeriana, Micarea assimilata, M. crassipes, M. melaenida, M. prasina, Pilophorus robustus, Placodiella olivacea, Placolecis opaca, Porpidia trullisata, Protoblastenia rupestris, Psilolechia lucida, Psorula rufonigra, Squamarina gypsacea, Xanthopsorella texana. (6) Among crustaceous lichens we find no groups related toLecidea dovrensis. We supportTimal's concept of including this species in the genusPilophorus. Pilophorus, as well asLecidea dovrensis is characterized by the same ascus type, by a similar structure of thallus, cephalodia, paraphyses, and ascocarp (although there is no pseudopodetium developed inLecidea dovrensis), and the presence of isousnic acid. In addition, both taxa are restricted to cool oceanic climates and non-calciferous substrates. The following combination is proposed:Pilophorus dovrensis (Nyl.)Timdal, Hertel & Rambold, comb. nova. (7) The species of theLecidea alpestris-group form an independent genus, probably near toAustrolecia
Hertel.
Frau Prof. Dr.Elisabeth Tschermak-Woess zu ihrem 70. Geburtstag gewidmet. 相似文献