Abstract
Bracts, basal and cauline leaves of North Anatolian representatives of Cynoglossum, viz., C. creticum Miller, C. officinale L., C. montanum L. and C. glochidiatum Wall. were investigated anatomically. Foliar thickness, trichome length and types, stomata types, stomata index, the presence of collenchyma and sclerenchyma were found to be important for delimitation of Cynoglossum species. All examined species have isobilateral leaf. Stomata were anisocytic and anomocytic. All the studied species had trichomes. Simple long and short trichomes were seen in leaves of C. creticum. Long and short trichomes with cystoliths at the base were seen in all leaves of C. montanum. Unicellular and multicellular unbranched trichomes and glandular trichomes were found in leaves of C. officinale. Short and adpressed trichomes were seen in leaves of C. glochidiatum.
Highlights
Cynoglossum L. (Boraginaceae) is represented by eight species in Turkey (Riedl, 1978)
Over the last couple of decades, several studies were carried out on Cynoglossum based on ecology, seed germination and chemical structure (Boorman and Fuller, 1984; Fisher et al, 1989; Stabell et al, 1998), very little is known about anatomical properties of this genus
The present study aims to examine the foliar anatomical properties of four North Anatolian species of Cynoglossum, namely C. creticum Miller, C. officinale L., C. montanum L. and C. glochidiatum Wall. and to evaluate their discriminative potential in taxonomy
Summary
Cynoglossum L. (Boraginaceae) is represented by eight species in Turkey (Riedl, 1978). (Boraginaceae) is represented by eight species in Turkey (Riedl, 1978). It is taxonomically difficult genus because of the fairly uniformity in external morphology. They generally grow along roadsides, sand dunes or open woodlands (Riedl, 1978; Sutory, 2005). No detailed anatomical studies were carried out so far on Turkish Cynoglossum species which are often difficult to distinguish from one another morphologically. The present study aims to examine the foliar anatomical properties of four North Anatolian species of Cynoglossum, namely C. creticum Miller, C. officinale L., C. montanum L. and C. glochidiatum Wall. The present study aims to examine the foliar anatomical properties of four North Anatolian species of Cynoglossum, namely C. creticum Miller, C. officinale L., C. montanum L. and C. glochidiatum Wall. and to evaluate their discriminative potential in taxonomy
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