Ribosomal RNA genes in biotypes ofScilla peruviana (Liliaceae) Maria José CarmonaRaffaele Ilio De DominicisFabio Maggini OriginalPaper Pages: 1 - 11
An ultrastructural comparison betweenSpermatozopsis andDunaliella (Chlorophyceae) Michael MelkonianHans Rudolf Preisig OriginalPaper Pages: 31 - 46
Notes on the karyosystematics ofAnnonaceae Wilhelm SauerFriedrich Ehrendorfer OriginalPaper Pages: 47 - 55
A light and electron microscopical study of the green flagellateSpermatozopsis similis spec. nova Hans Rudolf PreisigMichael Melkonian OriginalPaper Pages: 57 - 74
A discussion of the classesChlamydophyceae andChlorophyceae and their subordinate taxa T. R. Deason OriginalPaper Pages: 75 - 86
The embryology and relationships ofOliniaceae Hiroshi TobePeter H. Raven OriginalPaper Pages: 105 - 116
The grass megagametophyte and its possible phylogenetic implications Ana M. AntonAlfredo E. Cocucci OriginalPaper Pages: 117 - 121
Wachstum und Ausbildungsformen des Gynoeceums vonRochelia (Boraginaceae) Hartmut H. Hilger OriginalPaper Pages: 123 - 139
A New Species ofSalvia (Lamiaceae) from the Sierra de Los Tuxtlas, Mexico T. P. Ramamoorthy Short Communication Pages: 141 - 143