| Titre : | Botanical Journal of the Linnean Society 124(4) - 1997-08-01 |
| Type de document : | Bulletin |
| Paru le : | 01/08/1997 |
Dépouillements
Article
A new Polystichum (Pteridophyta: Dryopteridaceae) hybrid, P. x saltum is described. Several micromorphological characters are anomalous in their being a summation of the character states of the progenitors rather than being intermediate or close[...]
Article
Pollen morphological studies revealed the occurrence of the characteristic spinulose pollen type of Koenigia not only in the three species earlier recognized in the genus (A“islandica, K. nepalensis and K. pilosa) but also in three additional sp[...]
Article
D. Edwards, Auteur ;
G. Ewbank, Auteur ;
G. D. Abbott, Auteur
Coalified residues of the xylem and peripheral structure tissues (stereome) from permineralized (CaCO3) Lower Devonian Psilophyton dawsomi have been analysed by flash pyrolysis-gas chromatography-mass spectrometry. Both yielded C1-3 alkylphenols[...]
Article
D. De Sarker, Auteur ;
M. A. T. Johnson, Auteur ;
A. Reynolds, Auteur ;
P. E. Brandham, Auteur
Chromosome numbers are given for 16 taxa in Allium Section Allium, three in Section Codonoprasum, two in each of Sections Molium and Rkizirideum and one in each of Sections Kaloprasum, Megaloprason and Melanocrommyum. The basic chromosome number[...]
Article
Studies of microsporogenesis, pollen germination, pollen stainability, fruit and seed set and ovary predation have been undertaken to evaluate the fitness of the hybrid genotype of Phlomis x margaritae relative to its parents (P. purpurea and P.[...]
