تشريح بشرة القنبعة العصيفة والاثبة للجنس Echinochlo(Gramineae) في العراق

Abstract

The epidermal characteristics of lower and upper glumes , Lemma and paleas of Echinochloa L. species and varieties in Iraq were examined for the first time .Epidermises of lower and upper glume , Lemmas and paleas were described and illustrated . Crown cell , Cork cell and Silica cell diameter , Long –cell width and solitary or paired crown cell with cork cell or with others , prickles , pricle hairs , and microhairs distribution were found to be useful in the distinguishing species . Undulating shape and thickness of epidermis cell wall were found to be useful in the distinguishing species .