Results 131 to 140 of about 745 (170)

The Triassic Charophyta of Western Kazakhstan

Bulletin De La Société Botanique De France Actualités Botaniques, 1991
SummaryThe various conceptions of the systematics of the family Porocharaceae are discussed in relation with the author's point of view. The separate species allow the distinction of four biostratigraphic zones in the West Kazakhstan area. The species and genera distribution is related to the depth and salinity of the environment.
exaly   +2 more sources

Mesozoic Charophyta

Science, 1954
exaly   +3 more sources

Actin Phylogeny in the Charophyta

Journal of Phycology, 2002
AbstractPhotosynthetic green plants, the Viridiplantae, are composed of two distinct lineages, the Chlorophyta and Charophyta. The Chlorophyta include the Chlorophyceae, Trebouxiophyceae, Ulvophyceae and most prasinophytes. The Charophyta include the Mesostigmatales, the traditional charophycean green algal orders Chlorokybales, Klebsormidiales ...
J. D. Lewandowski, C. F. Delwiche
openaire   +1 more source

PHYLOGENY OF THE CHAROPHYTA

TAXON, 1974
Summary The affinities of the phylum Charophyta and the general evolutionary trends undergone by this group since the Late Silurian are discussed briefly. The main emphasis is placed on the Mesozoic family Clavatoraceae as the rapid changes in the utricle, a supplementary envelope investing the female gametangium, have led to quite ...
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NEW AND NOTEWORTHY SOUTH AFRICAN CHAROPHYTA

Transactions of the Royal Society of South Africa, 1925
(1925). NEW AND NOTEWORTHY SOUTH AFRICAN CHAROPHYTA. I. Transactions of the Royal Society of South Africa: Vol. 13, No. 2, pp. 145-158.
James Groves, Edith L. Stephens
openaire   +1 more source

SOME ANEUPLOIDS IN INDIAN CHAROPHYTA

Acta Botanica Neerlandica, 1986
SUMMARY Aneuploid chromosome numbers have been found in Indian material of Chara zeylanica var. zeylanica f. elegans (A.Br. & T.F.A.) Gr. & J.Gr. (n = 48) and Nitella acuminata var. acuminata f. belangari (A. Br.) R.D.W. (n = 29). The cytotaxonomy of the C. zeylanica complex has been discussed with reference to the antheridial scutae number.
S. K. Bhatnagar, M. Johri
openaire   +1 more source

The Charophyta from Clacton-on-Sea

Quarterly Journal of the Geological Society of London, 1923
The fruits vary considerably in size and shape, and represent in my opinion two, or possibly three, species. (1) The type to which most of the specimens belong resembles the fruit of the existing British Chara hispida , which it may well be. The length of the oogonium appears to be about 800 µ, but none of
openaire   +1 more source

???????????? ?????????? Charales (Charophyta) ??????????????

2016
The flora of Charales of Ukraine was analyzed in terms of taxonomic structure, ecological peculiarities, and geographical distribution.
openaire   +1 more source

Upper Devonian Charophyta of Western Australia

Micropaleontology, 2003
Charophytes are described and illustrated from the Upper Devonian of Western Australia, including five genera and nine species of which four are new species. Most belong to the Family Umbellinaceae being placed in a new Class Umbellinaphyceae of the Division Charophyta.
openaire   +1 more source

?????????????? ???????????????????????? ?? ???????????????? Charales (Charophyta) ???????? ???????????????????????????????? ?????????? ??????????????

2018
A study of the Charales (Charophyta) species diversity of the zone of deciduous forests in the Ukraine (ZDF) has revealed 60 new localities for 11 species from the genera Chara L. (7), Nitella C. Agardh (3), and Tolypella (A. Braun) A. Braun (1). Among them, the noteworthy records are Chara aspera Dethard. ex Willd., Ch. intermedia A.
openaire   +1 more source