The genus Chenopodium L. in Egypt. I. Morphological characters of diagnostic value.
Nine native Chenopodium species (C. ambrosioides, C. rubrum, C. glaucum, C. murale, C. album, C. vulvaria, C. ficifolium, C. opulifolium and C. moquinianum) were collected from different localities in Egypt and subjected to gross morphological studies. Foliage and floral characteristics proved to be valid in the construction of a numbered dichotomous key for more accurate identification. In this respect, habit, aroma, stem position, leaf base, petiole length in relation to that of blade, blade shape, structure and density of inflorescence, ovarian shape, number and length of stigmatic arms, ovule position within ovary, pericarp surface, seed colour and diameter and embryo shape were found to be of diagnostic value.