摘要:

Critical notes on Arabis(Brassicaceae)in the Flora of Italy and neighbouring regions.—Nomenclatural changes and changes of rank (compared with Flora Europaea) are performed in several taxa ofArabis. The formerArabis planisiliquamust be divided into a western mediterranean, ± xerophilous species—A. planisiliqua(Pers.) Reichenb.—, and a ± hygrophilous one—A. nemorensis(Hoffm.) Koch, native of Central and Eastern Europe. The formerArabis allioniiis to be divided intoArabis allioniiDC. proper of the Western Alps andA. sudeticaTausch of the Eastern Alps, Sudetes, Carpathians and SE Europe (not native in Italy).Arabis collinaTen. coversA. muralisBertol. (nom. illeg.) andA. collinaTen. pro parte of former floras, onlyA. roseaDC. has been left as a separate species.Arabis pumilaJacq. includes two subspecies: subsp.pumilaand subsp.stellulata(Bertol.) Nyman. Chromosome numbers have been investigated in:A. planisiliqua(2n= 16),A. allionii(2n= 32),A. collina(2n= 32) andA. rosea(2n= 32).

ISSN:0017-0070    

DOI:10.1080/11263507709426569

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Some aspects of lacustrine vegetation in the central Sicily.—The Authors give a short comparative survey of some hydrophytic facies observed in two small ponds near Caltanissetta, in the central Sicily. In addition to the classical zonation, typical of such water logged (or: swamp) biotopes, aPotamogeton pectinata-Chara vulgarisassociation is described. The presence of monospecific facies to be referred to theLemnetum gibbae(Koch, 1954) Miyaw. et J. Tx., 1960 is ultimately reported.

ISSN:0017-0070    

DOI:10.1080/11263507709426570

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Research on genus Fosliella (Corallinaceae - Rhodophyta): Fosliella cruciata sp. nov.—The present paper deals with various populations algae of genusFosliellabelonging to the living in the Gulf of Trieste. Systematic investigations have been carried out to compare these populations with already known species of the same genus.

ISSN:0017-0070    

DOI:10.1080/11263507709426571

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Critical notes on the flora of Italy. V - Further miscellaneous remarks.—The present paper includes a number of changes of rank and nomenclatural transfers in the generaSalix, Dianthus, Papaver, Anthyllis, Vitaliana, Armeria, Gentianella, Vinca, Micromeria, Odontites, Pedicularis, Cephalaria, Phyteuma, Laurentia, Bellis, Oglifa, Senecio, Andryala, Rhaponticum, Tolpis, Tragopogon, Hieracium, Hordelymus, Bromus, Trisetum, Trisetaria, Lophochloa, Typhoides, Cymbopogon, some of them of others collaborators to the flora (F. Bianchini, E. Pignatti Wikus); the infraspecific variability ofLaserpitium garganicum(Ten.) Bertol. and in the group ofAcinos alpinus(L.) Moench are discussed in detail. The typus ofLuzula italicaParl. is described and precised.Armeria majellensisBoiss, subsp.ausoniaBianchini andPhyteuma ovatumHonck. subsp.pseudospicatumPign. are described as new subspecies.

ISSN:0017-0070    

DOI:10.1080/11263507709426572

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Lembotropis emeriflorus(Rchb.)Skalićka in the Carnian Alps too.—Lembotropis(=Cytisus)emeriflorus, endemic species between the lakes of Lugano and Como, occurs also in the Southern Carnian Alps, where it grows either on gravelly habitats or on rocky slopes or under Austrian pine woods of the mountain zone. After this discovery its distributional pattern is now a typical bicentric one.

ISSN:0017-0070    

DOI:10.1080/11263507709426573

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Ecologycal study of « fontanil » near Crema.—The « fontanili » are a series of natural springs used by man for irrigation purposes. There are several thousand of these springs in Northen Italy and they located in a stretch of the country that runs parallel to the Alps. Formerly, several of them, including those described in this paper, were completely untouched and formed large swamps.

ISSN:0017-0070    

DOI:10.1080/11263507709426574

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Taxonomical notes on the genus Humicola Traaen.—The Author after having discussed on conidial characters of the genusHumicolaTraaen, segregates from this a new genusHumicolopsiswith the type speciesH. dimorphospora(Roxon et Jong) comb. nov.

ISSN:0017-0070    

DOI:10.1080/11263507709426575

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Fast-green absorption of cells localized in different regions of Allium cepa root cap.—The nuclear and cytoplasmic protein content of two cell population (C2 = columella cells; P2 = peripheral cells) has been determined by Barr and Stroud cytophotometer after Fast-green staining (after DNA extraction and without DNA extraction). The collected data seem indicate that: 1) histone content is higher in nuclei of C2 cells than in nuclei of P2 ones; 2) acid proteins content is higher in nuclei of P2 cells than in those of C2 ones; 3) the cytoplasmic proteins of the two cell populations are quite different in their Fast-green reactivity.

ISSN:0017-0070    

DOI:10.1080/11263507709426576

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Action of cyanide on growth and greening of seedlings of Picea abies and Larix decidua.—The effects of cyanide on growth and greening of dark germinated seedlings ofPicea abiesandLarix deciduaare studied. While growth ofPiceaseedlings is scarcely inhibited, the effect of the inhibitor onLarixseedlings is very drastic. Greening ofPiceaseedlings is never inhibited while, at stronger concentrations, cyanide weakly inhibits greening ofLarixseedlings. When seedlings are treated with cyanide and salicylhydrossamic acid, an inhibitor of mithocondrial respiration cyanide non-sensible, growth is inhibited more strongly than when cyanide only is used and greening too is inhibited. Cyanide is shown to be able to reach megagametophyte and embryo and to be incorporated steadily.

ISSN:0017-0070    

DOI:10.1080/11263507709426577

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Nasturtium microphyllum(Boenn.)Reichenb. (Cruciferae)in Italy.—The author has foundNasturtium microphyllumand its hybrid withNasturtium officinaleR.Br. (N. Xsterilis) along the banks of the Sesia River at Vercelli and of the Po River at Trino. The investigation in various italian herbaria has shown that the species were formerly collected in other places in Piedmont and Lombardy, but not considered as they are.

ISSN:0017-0070    

DOI:10.1080/11263507709426578

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor