Results 131 to 140 of about 711 (169)

THE FEMALE GAMETANGIUM OF TOLYPELLA NIDIFICA A.BR.: A MISINTERPRETATION

Acta Botanica Neerlandica, 1973
SUMMARY The conclusion of Kausik & Bhattacharya (1971) that in the genus Tolypella there are two stalk cells in the female gametangium and only one such cell in Chara and Nitella is repudiated. Tolypella, Chara and Nitella have in fact one stalk cell, sometimes two.
exaly   +2 more sources

Tolypella hispanica

This chapter gives an overview of the recent state of knowledge regarding Tolypella hispanica. It contains a full morphological description including identification hints and remarks on the potential risks of confusion. It also provides information on the distribution and ecology of the species in Europe and tackles potential threats.
Angelo Troia, Ralf Becker, Maria A Rodrigo   +2 more
exaly   +2 more sources

Tolypella glomerata

This chapter gives an overview of the recent state of knowledge regarding Tolypella glomerata. It contains a full morphological description including identification hints and remarks on the potential risks of confusion. It also provides information on the distribution and ecology of the species in Europe and tackles potential threats.
Angelo Troia
exaly   +2 more sources

Structure and development of the sex organs in Tolypella nidifica (O. Müll.) A.Br. (Characeae)

Botanical Journal of the Linnean Society, 1971
The occurrence of Tolypella(Characeae) in Libya is recorded for the first time. Also for the first time, the structural development of the male and female fructifications (the globule (antheridium) and the nucule (oogonium) respectively) in Tolypella nidifca(O. Mull.) A.Br. is described.
S B Kausik
exaly   +2 more sources

The quantities of DNA in the vegetative nuclei of Chara vulgaris and Tolypella glomerata (Charophyta)

Phycologia, 1987
Abstract Densitometric measurements of DNA were carried out on interphase nuclei of young shoots of Chara vulgaris and Tolypella glomerata coloured using the Feulgen technique. The results showed that in the two genera examined a maximum of 20–30% of the nuclei measured had a haploid cycle whereas at least 70% were polyploids (amount of DNA > 2C ...
I Soulie-Marsche
exaly   +2 more sources

Tolypella nidifica

Elisabeth Lambert, Hendrik Schubert
exaly   +2 more sources

Tolypella salina

Elisabeth Lambert, Hendrik Schubert
exaly   +2 more sources

Tolypella normaniana

exaly   +2 more sources

Tolypella longicoma in Cayuga Lake, New York

Bulletin of the Torrey Botanical Club, 1923
exaly   +2 more sources

Plastid DNA sequences and oospore characters of some European species of Tolypella section Tolypella (Obtusifolia, Characeae) indicate a new cryptic Tolypella species from the Mediterranean island Sardinia

2022
Abstract In Europe, the genus Tolypella (Characeae) comprises four to eight Tolypella species in sections Rothia and Tolypella that have been distinguished by vegetative ...
Anja Holzhausen, Petra Nowak, Andreas Ballot, Ralf Becker, Jasmina Gebert, Thomas Gregor, Kenneth G. Karol, Elisabeth Lambert, William Pérez, Uwe Raabe, Susanne C. Schneider, Nick Stewart, Klaus van de Weyer, Volker Wilde, Hendrik Schubert   +14 more
openaire   +1 more source