Abstract
Summary Some Crocus L. species of the subgenus Nudiflori M aw , which were assumed to produce a terminal flower, were selected for analysis of their inflorescence structure. The preliminary study of the bract and bracteole shapes during development revealed bidentate structure of both organs. The angles ofleaf divergence were measured in main florescence and paracladia. The obtained diagrams were transformed into axial schemata by a formal method. The investigation revealed, that the bract and bracteole are prophylls, thus the previously used terminology for Iridaceae inflorescene (bract, bracteole and prophyll) appeared to be an inadequate description for the correct organ homologization. In all analysed species, the flower was positioned on the axis of the third (in the main inflorescence) or fourth (in the paracladia) order, but it was never terminal as proposed earlier.
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