STRUCTURAL ASPECTS OF THE VEGETATIVE OEGANS OF CRYPTOCORYNE WENDTII DE WIT. (ARACEAE)
The paper presents structural aspects of the vegetative organs (adventitious root, stem and leaf) of a monocot herb, native to Sri Lanka and Thailand, namely Cryptocorynewendtii de Wit. It is a green variety of Cryptocorynewendtii, growing both submerged and emerged in its native regions. In our country the plant is known as an aquarium plant. The material fixation and processing was done according to the usual protocol of the Vegetal Morphology and Anatomy Laboratory belonging to the Natural Sciences Department of the our faculty. The adventitious root has a primary monocot structure with small intercellular spaces. The short stem vascular system consists of amphivasal bundles to the center and fewcollateral bundles to periphery.The petiole exhibits epidermis with regularlly arranged cutinized cells, without intercellular spaces, covered by a thik cuticle and poor developed stele vascular system. The leaf mesophyll is homogenous (isobilateral) type, with small intercellular spaces and a poor developed midrib collateral bundle with few conductive elements. The mechanical tissues almost lack. The petiole and blade have sclerenchyma groups of cells bellow the epidermis and for the blade to the lower epidermis.