Abstract
Nonea Medik. species are represented worldwide by about
35 species and represented by 23 species in Turkey. Nonea
species are commonly known as Sormuk otu and some
species use as folk medicine; aerial parts prepared as porridge
are used for wound healing and internally for stomachache
in Turkey.
In this study stem and leaf anatomy of the endemic Nonea
dumanii Bilgili & Selvi species (Boraginaceae) was investigated.
In the cross section of stem, cortex has 2-3 layers collenchymatic
cells and multilayered parenchymatic cells. Epidermis contains
glandular and eglandular trichomes on stem and leaf. Xylem is
composed of sclerenchymatic cells and tracheary elements in
vascular bundles. The pith is composed of parenchymatical
cells.
Stomata are anomocytic and amphistomatic in leaves. The sizes
of stomata in abaxial surface are bigger than the sizes of stomata
in adaxial surface, also stomata index of abaxial surface is bigger
than in adaxial surface. Minor bundles are surrounded by one
layered parenchymatic sheat in leaf. Palisade tissue is existing
on both side of leaf (isobilateral). Spongy tissue