摘要:

Critical notes on the flora of Italy. II. The Minuartia verna group. The following paper contains a re-examination of theMinuartia verna–complex in Italy based on a revision of herbarium-specimens and observations in nature. The author proposes to divide this polymorphic species into 4 subspecies. Two of them (subsp.vernaand subsp.collina) are largely corresponding to the opinion of earlier authors. The subsp.atticais also represented in the flora of Southern Italy, but Italian populations are slightly different from those of Greece (which must be regarded as typical). The subsp.grandifloraliving in a small area in Sicily, which was incompletely known, is described and its relations to the other subspecies are discussed.

ISSN:0017-0070    

DOI:10.1080/11263507409426351

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

New data on the ecology of germination of Althenia filiformis Petit. – The author investigated the natural environment where this species, halophyte and hydrophyte, germinates. The relationships between temperature, salt concentration of pools in whichAlthenia filiformislives, and the dormancy of seeds were examined. In particular the author studied the behaviour of this species considering the natural conditions of pools of Orbetello (Tuscany) and Simbirizzi (Sardinia).

ISSN:0017-0070    

DOI:10.1080/11263507409426352

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

Studies on the genus Peyssonnelia(Rhodophyceae).III. Peyssonnelia crispata sp. nov. – A new specie ofPeyssonnelia(P. crispata) is described from deep waters (44 to 45 m.) off the mediterranean coast of France.

ISSN:0017-0070    

DOI:10.1080/11263507409426353

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

Karyology of some species of Vicia. The species studied are:Vicia articulata, Vicia monantha, Vicia narbonensisandVicia ervilia.

ISSN:0017-0070    

DOI:10.1080/11263507409426354

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

The « Pedicularis » of the series « Foliosae » Maxim, in the Italian Flora. – The paper deals with the badly known distribution ofPedicularis foliosaL.,P. hoermannianaK. Maly andP. hacquetiiGraf (ser. Foliosae Maxim.) both in Europe and in Italy. The illyrianP. hoermannianaoccurs also in central Italy, being therefore a typical periadriatic entity. It completely substitutes the two others species in the Italian peninsula.

ISSN:0017-0070    

DOI:10.1080/11263507409426355

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

On the systematic position of Euphrasia marchesettii Wettst. B. marchesettiiWettst. is generally considered as a hybrid betweenE. kerneriWettst. and a not well mentioned species of subsect.Angustifoliae. Some ecological and phenological observations rouse a doubt on this interpretation and suggest the hypotesis thatE. marchesettiimay have a common origin withE. kerneri. Its differentiation could be possibly due to specialization in wet communities. A morphometric study was carried out to compareE. marchesettiiwith its possible ancestors out of subsect.CiliataeandAngustifoliae. The results of this study show that the highest morfological affinity ofE. marchesettiiis withE. kerneri; consequently it should be included in subsect.Ciliatae.

ISSN:0017-0070    

DOI:10.1080/11263507409426356

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

Frequency and localization of mitosis in lateral root primordia of Marsilea strigosa. At different stages of development of the root primordium ofMarsilea strigosathe apical cell undergoes a strong decline in mitotic activity whilst active divisions occur in the mass of cells sorrounding the apical. In the present paper data on the frequency and localization of mitosis in lateral root primordia are collected.

ISSN:0017-0070    

DOI:10.1080/11263507409426357

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

The present work is a study of the blue-green algae living in the coralloid roots ofMacrozamia communisand isolated fromMacrozamia communisin culture.

ISSN:0017-0070    

DOI:10.1080/11263507409426358

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

The development and general morphology ofDiplotaxis erucoides(L.) DC. suspensor is of the « Onagrad Type », « Alyssum Variation ». Maximum growth of the suspensor occurs from the globular to the early heart stage of embryo development. The suspensor starts then to degenerate disintegrating shortly after the torpedo stage of the embryo.

ISSN:0017-0070    

DOI:10.1080/11263507409426359

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0017-0070    

DOI:10.1080/11263507409426350

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor