Some features of anatomical structure of the stem of Aconitum moldavicum Hacq. and A. lycoctonum L. em. Koelle (Ranunculaceae)

Abstract

A. lycoctonum and A. moldavicum from subgenus Lycoctonum (DC.) Peterm. cha­racterized by the existence of broad lignified parenchymal ring, subepidermal collenchymatic ring and mechanical strands. Sclerenchymal strands follow the bundles from the side of phloem and collenchymal – from the side of xylem. The stem vascular system in both species is represented by main ring of big open bundles and by the group of peripheral small ones. Differentiation of lignified ring on two layers and occurrence of peripheral vascular bundles are suggested to be recognized as diagnostic features for the subgenus Lycoctonum.

Keywords

• anatomy
• stem
• aconitum