NYMPHAEA L. GENUS IN THE DANUBE DELTA, ROMÂNIA

Abstract

This paper is focused on the two species of the Nymphaea genus, present in the flora of the Danube Delta, respectively Nymphaea alba L. and N. candida C. Presl. The paper has several objectives as follows: i) to illustrate the morphological identification features mentioned in the literature for Nymphaea alba and N.candida, using material collected from the Danube Delta, ii) to complete the existing information with anatomical-histological data regarding the structure of the lamina and the petiole, with emphasis on the particularities of the mechanical, assimilating and conducting tissues of the two hydrophytes, iii) to present and characterize a variety of the taxon Nymphaea candida – Nymphaea candida var. undulatifolia var. nova, identified in 2012, in the Danube Delta on the Barbos Canal and the Letea Canal, with a confirmed presence in the period 2012-2015, 2017-2019.

Keywords

• anatomy
• aquatic plants
• identification features
• morphology
• new taxa.