Rhamnaceae with multiple lateral buds: an architectural analysis

TOURN, G. M., TORTOSA, R. D. & MEDAN, D., 1992. Rhamnaceae with multiple lateral buds: an architectural analysis. A study was made of the morphology and architecture of three species of Rhamnaceae (Ziziphusjujuba, Zjziphus mistol and Paliurus spina-Christi) with multiple lateral buds. The developmental potential of individual meristems of bud complexes was studied and different kinds of shoots were recognized: vegetative long shoots (dominant and subordinate), flowering branches, short shoots and thorn-tipped branchlets. According to the different orders of branching and the patterns of growth, the architectural model for every species was determined. The architecture of the three species does not conform to that of known tree models. Ziziphus mistol and Paliurus spina-Christi have an architecture intermediate between Attim's and Roux's models; Ziziphusjujuba results in a combination of Koriba's and Roux's models.