Taxonomical Study for the Species Chenopodium Album L. And Chenopodiastrum Murale L. Belong to Amaranthace (Chenopodiaceae ) at Baghdad

Abstract

The current research dealt with a comparative taxonomic study of the two types Chenopodium album L. and Chenopodiastrum murale L. at Baghdad , This research was included a cytological study by calculating the chromosome number by sequence n=27,9. and studying the micro-morphological characteristics of the seeds and fruits of the two types, in addition to the surface covering in the leaf part. All phenotypic characteristics of the seeds were studied by scanning electron microscope (SEM) and Light microscope (LM) in terms of shape, colour, dimensions Seed size were measured by the program digmizer , as well as the configuration of the seeds surface , The seeds of Ch.album were distinguished by their dark-black color, while the seeds of the other type were greenish-brown, seeds in addition to the fruits, helped to isolate and classify the two types. The surface covering results showed a variation in terms of density and distribution method on the leaf surface , and the presence of glandular-bladder and a glandular hairs was recorded in Ch.album, while for Ch.murale hairs of the a glandular type were observed. It is worth noting that all the results obtained in this research are presented for the first time in Iraq.

A new Record of the Genus Carduus Curtis. (Asteraceae) for Iraq

“…while in the flora of turkey mention about 19 species, in the time that flora of Pakistan registers eight species belongs to Carduus L. a new species has been found in Iraq Carduus tenuiflorus Curtis ( selenderflower thistle), which identified according to the flora of Pakistan in spite of the of similarity with the species C. pycnocephalus but its differ from it in some substantial differences, C. tenuiflorus stem wings reaching up to the base of capitulum with leafs lobes 6-10 pairs, capitula in compact clusters of 3-10 and outer phyllaries ovate -lanceolate, glabrous -sparsely arachnoid hairy with purplish tinged it was collected from different location in Al-Nahrain university and Baghdad university in Baghdad town. Many searchers have been done in this town due to its plants variations and record many new species in the last time, The taxonomical study of [12]on Chenopodiaceae family deal with two species of it, while [13] have studied the systematics significance of morphological and anatomical diversity of Portulaca oleracea.…”